{"title":"PCB Fabrication \u0026 Circuit Repair","description":"\u003cp\u003ePCB fabrication and circuit repair supplies for engineering labs, electronics workshops, education and maintenance benches. Explore copper-clad FR4 boards, PCB etchants, conductive pens and protective circuit overcoats for prototype fabrication and localized circuit repair. Compare board dimensions, laminate thickness, copper weight and single-sided or double-sided construction to match your design. Select etchants for your fabrication process and compatible conductive materials for restoring damaged traces, then choose an appropriate overcoat to protect repaired areas. Copper-clad boards are unpatterned blanks, not finished circuits or populated development boards. Check individual listings for substrate compatibility, application instructions, curing conditions, technical data sheets and safety information. Explore our \u003ca href=\"\/pages\/pcb-rework-precision-tools\"\u003e\u003cstrong\u003ePCB Rework \u0026amp; Precision Tools guide\u003c\/strong\u003e\u003c\/a\u003e for related electronics bench tools and practical application guidance.\u003c\/p\u003e","products":[{"product_id":"single-sided-copper-clad-board-1-16-1-oz-copper-515","title":"MG Chemicals 515, Single Sided Copper Clad Board, 1\/16\", 1 Oz Copper, 8\"x10\", Case of 5","description":"\u003ch2\u003eMG Chemicals 515, Single Sided Copper Clad Board, 1\/16\", 1 Oz Copper, 8\"x10\", Case of 5\u003c\/h2\u003e\u003cp\u003eMG Chemicals 515 is a single-sided copper-clad FR4 board for PCB prototyping and small production runs. Each 8 × 10-inch blank combines a 1\/16-inch glass-epoxy laminate with 1 oz copper cladding on one side, giving design engineers, repair departments, students and hobbyists a starting surface for custom circuit fabrication. This listing supplies a case of five boards.\u003c\/p\u003e\u003ch3\u003eBest Uses \/ Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSingle-sided PCB prototypes and design validation.\u003c\/li\u003e\n\u003cli\u003eSmall production runs using a suitable resist and etching process.\u003c\/li\u003e\n\u003cli\u003eElectronics education and hands-on circuit-board fabrication.\u003c\/li\u003e\n\u003cli\u003eCustom board layouts needing an 8 × 10-inch starting blank.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is a copper-clad laminate blank, not a pre-etched circuit, pre-drilled perfboard or solderless breadboard. The manufacturer describes fabrication with an anti-etch PCB pen and copper etchant; select the complete process and handling controls appropriate to your design.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContinuous woven glass cloth impregnated with epoxy resin.\u003c\/li\u003e\n\u003cli\u003eFR4, the flame-retardant version of G-10 described by the manufacturer.\u003c\/li\u003e\n\u003cli\u003eSingle-sided 1 oz copper cladding, nominally 35 µm or 1.37 mil thick.\u003c\/li\u003e\n\u003cli\u003eLess copper to remove than a comparable 2 oz copper board, enabling quicker etching under comparable process conditions.\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) cured system and UV-blocking construction.\u003c\/li\u003e\n\u003cli\u003eManufacturer describes the boards as easy to cut without specialized equipment; use a suitable cutting method and follow the SDS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \/ part number\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals \/ 515\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct family\u003c\/td\u003e\n\u003ctd\u003e500 Series Copper Clad Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eSingle-sided copper-clad FR4 glass-epoxy laminate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard dimensions\u003c\/td\u003e\n\u003ctd\u003e8 × 10 in.; manufacturer metric listing 203 × 254 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaminate thickness\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. nominal \/ manufacturer listing 1.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper weight\u003c\/td\u003e\n\u003ctd\u003e1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper thickness\u003c\/td\u003e\n\u003ctd\u003e35 µm \/ 1.37 mil nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSales package\u003c\/td\u003e\n\u003ctd\u003eCase of 5 boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure system\u003c\/td\u003e\n\u003ctd\u003eDICY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV blocking\u003c\/td\u003e\n\u003ctd\u003eYes, per manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-reported conformance\u003c\/td\u003e\n\u003ctd\u003eUL file E214381 and IPC-4101C\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlammability, typical family data\u003c\/td\u003e\n\u003ctd\u003e94 V-0, UL-94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum operating temperature, typical\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass transition temperature, typical\u003c\/td\u003e\n\u003ctd\u003e140°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture absorption, typical\u003c\/td\u003e\n\u003ctd\u003e0.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric constant at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e4.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation factor at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e0.015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric strength, typical\u003c\/td\u003e\n\u003ctd\u003e1,200–1,400 V\/mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeel strength, 1 oz copper, typical\u003c\/td\u003e\n\u003ctd\u003e10–12 lb\/in. as received; 9–12 lb\/in. after thermal stress\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexural strength, typical\u003c\/td\u003e\n\u003ctd\u003e600 MPa warp; 500 MPa fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e18–27°C, dry and away from sunlight; sealed airtight and protected from humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003ePerformance figures are manufacturer-published typical family values for reference, not guaranteed design limits. Consult the full TDS and qualify the laminate and fabrication process for the intended assembly.\u003c\/p\u003e\u003ch3\u003eCompare Copper-Clad Board Options\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eDifference\u003c\/th\u003e\n\u003cth\u003eSelection consideration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e515: single-sided 1 oz, 8 × 10 in.\u003c\/td\u003e\n\u003ctd\u003eCopper on one face; 1\/16-in. FR4\u003c\/td\u003e\n\u003ctd\u003eSingle-sided designs needing this blank size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e521: single-sided 1 oz, 12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003eLarger blank in the same listed thickness\u003c\/td\u003e\n\u003ctd\u003eLayouts needing more board area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e540: double-sided 1 oz, 3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003eCopper on both faces; smaller blank\u003c\/td\u003e\n\u003ctd\u003eDesigns requiring two copper faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 oz copper-clad board\u003c\/td\u003e\n\u003ctd\u003eMore copper than a 1 oz board\u003c\/td\u003e\n\u003ctd\u003eCompare electrical and etching requirements; manufacturer notes quicker etching with 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 Series 1\/2 oz \/ 1\/32-in. option\u003c\/td\u003e\n\u003ctd\u003eThinner copper and laminate within the family\u003c\/td\u003e\n\u003ctd\u003eDo not assume these family options describe 515\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eFabrication and Storage Guidance\u003c\/h3\u003e\u003cp\u003ePlan the circuit layout and confirm the required board size, copper weight and layer count before fabrication. Apply a suitable etch resist, use a compatible copper etchant according to its instructions, and inspect the resulting circuit before assembly. Follow the board SDS and the instructions for every fabrication chemical and tool. Keep unused boards in an airtight container in a dry area at 18–27°C, away from sunlight and humidity.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eWhat are the dimensions of MG Chemicals 515?\u003c\/h4\u003e\u003cp\u003eEach board is nominally 8 × 10 inches, listed by the manufacturer as 203 × 254 mm, with a 1\/16-inch (1.6 mm) FR4 laminate.\u003c\/p\u003e\u003ch4\u003eIs there copper on both sides?\u003c\/h4\u003e\u003cp\u003eNo. 515 is single-sided, with copper cladding on one face. Choose a double-sided part if the design needs copper on both faces.\u003c\/p\u003e\u003ch4\u003eWhat does 1 oz copper mean here?\u003c\/h4\u003e\u003cp\u003eIt identifies the copper cladding weight designation. The manufacturer gives its nominal thickness as 35 µm or 1.37 mil; it does not mean the finished board weighs one ounce.\u003c\/p\u003e\u003ch4\u003eHow many boards are supplied?\u003c\/h4\u003e\u003cp\u003eThis listing is a case of five 515 boards.\u003c\/p\u003e\u003ch4\u003eIs it a ready-to-use circuit board?\u003c\/h4\u003e\u003cp\u003eNo. It is an unpatterned copper-clad blank. Circuit fabrication requires an appropriate resist, etching process and any additional operations your design needs.\u003c\/p\u003e\u003ch4\u003eWhy choose 1 oz instead of 2 oz copper?\u003c\/h4\u003e\u003cp\u003eThe manufacturer notes that 1 oz boards contain less copper, making etching quicker than 2 oz boards under comparable conditions. Choose copper weight based on the circuit's requirements, not etching speed alone.\u003c\/p\u003e\u003ch4\u003eIs FR4 the same as ordinary G-10?\u003c\/h4\u003e\u003cp\u003eThe manufacturer describes FR4 as the flame-retardant version of G-10. The 500 Series uses woven glass cloth impregnated with epoxy resin and a DICY cured system.\u003c\/p\u003e\u003ch4\u003eHow should unused boards be stored?\u003c\/h4\u003e\u003cp\u003eStore at 18–27°C in a dry area away from sunlight, sealed in an airtight container and protected from humidity.\u003c\/p\u003e\u003ch3\u003eTechnical and Safety Documents\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-TDS-2025.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Technical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision October 6, 2025, version 3.0.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-SDS-2020.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Safety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision February 28, 2020, version 2.01; includes part 515.\u003c\/p\u003e\u003ch3\u003eRelated Resources\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/mg-chemicals\"\u003e\u003cstrong\u003eShop MG Chemicals\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore the MG Chemicals range.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/pcb-rework-precision-tools\"\u003e\u003cstrong\u003ePCB Rework \u0026amp; Precision Tools Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore related electronics bench tools and rework applications.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39584536527053,"sku":"515","price":97.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-515-single-sided-copper-clad-board-116-1-oz-copper-8x10-case-of-5mg-chemicals515-502791.png?v=1735947007"},{"product_id":"single-sided-copper-clad-board-1-16-1-oz-copper-12x12-521","title":"MG Chemicals 521, Single Sided Copper Clad Board, 1\/16\", 1Oz Copper, 12\"X12\", Case of 5","description":"\u003ch2\u003eMG Chemicals 521, Single Sided Copper Clad Board, 1\/16\", 1Oz Copper, 12\"X12\", Case of 5\u003c\/h2\u003e\u003cp\u003eMG Chemicals 521 is a 12 × 12-inch single-sided copper-clad FR4 board for PCB prototyping and small production runs. Its woven glass-epoxy laminate is nominally 1\/16 inch thick with 1 oz copper cladding on one face. The square blank provides a larger starting area than the 8 × 10-inch 515 for engineers, electronics workshops, students and hobbyists fabricating custom circuits. This listing supplies a case of five boards.\u003c\/p\u003e\u003ch3\u003eBest Uses \/ Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSingle-sided PCB prototypes requiring a 12 × 12-inch starting blank.\u003c\/li\u003e\n\u003cli\u003eSmall production runs using an appropriate resist and copper-etching process.\u003c\/li\u003e\n\u003cli\u003eElectronics teaching, design development and hands-on circuit fabrication.\u003c\/li\u003e\n\u003cli\u003eCustom layouts where the board can be cut to the required dimensions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is an unpatterned copper-clad laminate, not a pre-etched circuit, pre-drilled perfboard or solderless breadboard. The manufacturer describes fabrication using an anti-etch PCB pen and copper etchant; select the complete process and handling controls appropriate to your design.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContinuous woven glass cloth impregnated with epoxy resin.\u003c\/li\u003e\n\u003cli\u003eFR4, described by the manufacturer as the flame-retardant version of G-10.\u003c\/li\u003e\n\u003cli\u003eSingle-sided 1 oz copper, nominally 35 µm or 1.37 mil thick.\u003c\/li\u003e\n\u003cli\u003eLess copper to remove than a comparable 2 oz board, enabling quicker etching under comparable process conditions.\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) cured system and UV-blocking construction.\u003c\/li\u003e\n\u003cli\u003eManufacturer describes easy cutting without specialized equipment; use a suitable method and follow the SDS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \/ part number\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals \/ 521\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFamily\u003c\/td\u003e\n\u003ctd\u003e500 Series Copper Clad Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eSingle-sided copper-clad FR4 glass-epoxy laminate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard dimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 12 in. nominal; manufacturer metric listing 304 × 304 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaminate thickness\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. nominal \/ manufacturer listing 1.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper weight\u003c\/td\u003e\n\u003ctd\u003e1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper thickness\u003c\/td\u003e\n\u003ctd\u003e35 µm \/ 1.37 mil nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSales package\u003c\/td\u003e\n\u003ctd\u003eCase of 5 boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure system\u003c\/td\u003e\n\u003ctd\u003eDICY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV blocking\u003c\/td\u003e\n\u003ctd\u003eYes, per manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-reported conformance\u003c\/td\u003e\n\u003ctd\u003eUL file E214381 and IPC-4101C\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlammability, typical family data\u003c\/td\u003e\n\u003ctd\u003e94 V-0, UL-94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum operating temperature, typical\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass transition temperature, typical\u003c\/td\u003e\n\u003ctd\u003e140°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture absorption, typical\u003c\/td\u003e\n\u003ctd\u003e0.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric constant at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e4.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation factor at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e0.015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric strength, typical\u003c\/td\u003e\n\u003ctd\u003e1,200–1,400 V\/mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeel strength, 1 oz copper, typical\u003c\/td\u003e\n\u003ctd\u003e10–12 lb\/in. as received; 9–12 lb\/in. after thermal stress\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexural strength, typical\u003c\/td\u003e\n\u003ctd\u003e600 MPa warp; 500 MPa fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e18–27°C, dry and away from sunlight; sealed airtight and protected from humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003ePerformance figures are manufacturer-published typical family values for reference, not guaranteed design limits. Consult the full TDS and qualify the laminate and fabrication process for the intended assembly.\u003c\/p\u003e\u003ch3\u003eCompare Copper-Clad Board Options\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eDifference\u003c\/th\u003e\n\u003cth\u003eSelection consideration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e521: single-sided 1 oz, 12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003eSquare blank with copper on one face\u003c\/td\u003e\n\u003ctd\u003eSingle-sided layouts needing the larger starting area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e515: single-sided 1 oz, 8 × 10 in.\u003c\/td\u003e\n\u003ctd\u003eSmaller rectangular blank in the same listed thickness\u003c\/td\u003e\n\u003ctd\u003eDesigns fitting an 8 × 10-inch starting area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e540: double-sided 1 oz, 3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003eCopper on both faces; smaller blank\u003c\/td\u003e\n\u003ctd\u003eDesigns needing two copper faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e555: double-sided 1 oz, 12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003eSame nominal face dimensions with copper on both sides\u003c\/td\u003e\n\u003ctd\u003eCompare when two copper faces are needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 oz copper-clad board\u003c\/td\u003e\n\u003ctd\u003eMore copper than a 1 oz board\u003c\/td\u003e\n\u003ctd\u003eCompare circuit and etching requirements; 1 oz requires less copper removal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eThe family also includes 1\/2 oz copper and 1\/32-inch laminate options. Those thinner family options do not describe part 521.\u003c\/p\u003e\u003ch3\u003eFabrication and Storage Guidance\u003c\/h3\u003e\u003cp\u003eConfirm layout dimensions, copper weight and required layer count before fabrication. Apply a suitable etch resist, use a compatible copper etchant according to its instructions, and inspect the circuit before assembly. Follow the board SDS and instructions for each fabrication chemical and tool. Store unused boards in an airtight container in a dry area at 18–27°C, away from sunlight and humidity.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eWhat size is MG Chemicals 521?\u003c\/h4\u003e\u003cp\u003eEach board is nominally 12 × 12 inches. The manufacturer lists 304 × 304 mm and a 1\/16-inch (1.6 mm) FR4 laminate.\u003c\/p\u003e\u003ch4\u003eIs 521 single-sided or double-sided?\u003c\/h4\u003e\u003cp\u003eIt is single-sided, with copper on one face. The manufacturer's 555 is a double-sided option with the same nominal 12 × 12-inch face dimensions.\u003c\/p\u003e\u003ch4\u003eWhat does 1 oz copper mean?\u003c\/h4\u003e\u003cp\u003eIt is the copper cladding weight designation. The manufacturer lists a nominal copper thickness of 35 µm or 1.37 mil; the finished board does not weigh only one ounce.\u003c\/p\u003e\u003ch4\u003eHow many boards are included?\u003c\/h4\u003e\u003cp\u003eThis listing supplies a case of five 521 boards.\u003c\/p\u003e\u003ch4\u003eHow is 521 different from 515?\u003c\/h4\u003e\u003cp\u003eBoth are single-sided 1 oz copper-clad FR4 in the same listed thickness. 521 is 12 × 12 inches; 515 is 8 × 10 inches.\u003c\/p\u003e\u003ch4\u003eIs it ready for components?\u003c\/h4\u003e\u003cp\u003eIt is a copper-clad blank rather than a finished circuit. Your design requires an appropriate fabrication process, including resist and etching and any additional operations needed.\u003c\/p\u003e\u003ch4\u003eWhy use 1 oz instead of 2 oz copper?\u003c\/h4\u003e\u003cp\u003eThe manufacturer notes that 1 oz boards contain less copper and etch quicker under comparable conditions. Select copper weight for the circuit's electrical and fabrication requirements, not speed alone.\u003c\/p\u003e\u003ch4\u003eHow should it be stored?\u003c\/h4\u003e\u003cp\u003eStore at 18–27°C, dry and away from sunlight, sealed in an airtight container and protected from humidity.\u003c\/p\u003e\u003ch3\u003eTechnical and Safety Documents\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-TDS-2025.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Technical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision October 6, 2025, version 3.0.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-SDS-2020.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Safety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision February 28, 2020, version 2.01; includes part 521.\u003c\/p\u003e\u003ch3\u003eRelated Resources\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/mg-chemicals\"\u003e\u003cstrong\u003eShop MG Chemicals\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore the MG Chemicals range.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/pcb-rework-precision-tools\"\u003e\u003cstrong\u003ePCB Rework \u0026amp; Precision Tools Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore related electronics bench tools and rework applications.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39584536789197,"sku":"521","price":155.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-521-single-sided-copper-clad-board-116-1oz-copper-12x12-case-of-5mg-chemicals521-367078.png?v=1735947007"},{"product_id":"540-double-sided-copper-clad-boards-1-16-1-oz-copper-3x5","title":"MG Chemicals 540, Double Sided Copper Clad Boards, 1\/16\", 1z Copper, 3\"X5\", Case of 5","description":"\u003ch2\u003eMG Chemicals 540, Double Sided Copper Clad Boards, 1\/16\", 1z Copper, 3\"X5\", Case of 5\u003c\/h2\u003e\u003cp\u003eMG Chemicals 540 is a double-sided copper-clad FR4 board for PCB prototyping and small production runs. Each nominal 3 × 5-inch blank combines a 1\/16-inch glass-epoxy laminate with the manufacturer's 1 oz copper cladding specification and copper on both faces. This compact format gives engineers, electronics workshops, students and hobbyists a starting blank for designs requiring two copper faces. This listing supplies a case of five boards.\u003c\/p\u003e\u003ch3\u003eBest Uses \/ Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDouble-sided PCB prototypes fitting a 3 × 5-inch starting blank.\u003c\/li\u003e\n\u003cli\u003eSmall production runs using a suitable resist and copper-etching process.\u003c\/li\u003e\n\u003cli\u003eElectronics education and practical circuit-board fabrication.\u003c\/li\u003e\n\u003cli\u003eCustom circuit development where copper is needed on both board faces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is an unpatterned copper-clad laminate, not a pre-etched circuit, pre-drilled perfboard or solderless breadboard. Double-sided cladding alone does not provide a finished circuit or plated-through interconnections. Select and qualify the fabrication process for your design.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContinuous woven glass cloth impregnated with epoxy resin.\u003c\/li\u003e\n\u003cli\u003eFR4, described by the manufacturer as the flame-retardant version of G-10.\u003c\/li\u003e\n\u003cli\u003eDouble-sided construction with 1 oz copper cladding, nominally 35 µm or 1.37 mil copper thickness.\u003c\/li\u003e\n\u003cli\u003eLess copper to remove than comparable 2 oz cladding, enabling quicker etching under comparable conditions.\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) cured system and UV-blocking construction.\u003c\/li\u003e\n\u003cli\u003eManufacturer describes easy cutting without specialized equipment; use a suitable cutting method and follow the SDS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \/ part number\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals \/ 540\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFamily\u003c\/td\u003e\n\u003ctd\u003e500 Series Copper Clad Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eDouble-sided copper-clad FR4 glass-epoxy laminate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard dimensions\u003c\/td\u003e\n\u003ctd\u003e3 × 5 in. nominal; manufacturer metric listing 76 × 127 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaminate thickness\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. nominal \/ manufacturer listing 1.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper cladding designation\u003c\/td\u003e\n\u003ctd\u003e1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal copper thickness\u003c\/td\u003e\n\u003ctd\u003e35 µm \/ 1.37 mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSales package\u003c\/td\u003e\n\u003ctd\u003eCase of 5 boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure system\u003c\/td\u003e\n\u003ctd\u003eDICY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV blocking\u003c\/td\u003e\n\u003ctd\u003eYes, per manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-reported conformance\u003c\/td\u003e\n\u003ctd\u003eUL file E214381 and IPC-4101C\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlammability, typical family data\u003c\/td\u003e\n\u003ctd\u003e94 V-0, UL-94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum operating temperature, typical\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass transition temperature, typical\u003c\/td\u003e\n\u003ctd\u003e140°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture absorption, typical\u003c\/td\u003e\n\u003ctd\u003e0.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric constant at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e4.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation factor at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e0.015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric strength, typical\u003c\/td\u003e\n\u003ctd\u003e1,200–1,400 V\/mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeel strength, 1 oz copper, typical\u003c\/td\u003e\n\u003ctd\u003e10–12 lb\/in. as received; 9–12 lb\/in. after thermal stress\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexural strength, typical\u003c\/td\u003e\n\u003ctd\u003e600 MPa warp; 500 MPa fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e18–27°C, dry and away from sunlight; sealed airtight and protected from humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003ePerformance figures are manufacturer-published typical family values for reference, not guaranteed design limits. Consult the full TDS and qualify the laminate and fabrication process for the intended assembly.\u003c\/p\u003e\u003ch3\u003eCompare Copper-Clad Board Options\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eDifference\u003c\/th\u003e\n\u003cth\u003eSelection consideration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e540: double-sided 1 oz, 3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003eCompact blank with copper on both faces\u003c\/td\u003e\n\u003ctd\u003eDouble-sided layouts fitting this starting size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e503: single-sided 1 oz, 3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003eSame nominal face dimensions, copper on one face\u003c\/td\u003e\n\u003ctd\u003eDesigns needing only one copper face\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e555: double-sided 1 oz, 12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003eLarger blank in the same listed laminate thickness\u003c\/td\u003e\n\u003ctd\u003eDouble-sided layouts needing more starting area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e515: single-sided 1 oz, 8 × 10 in.\u003c\/td\u003e\n\u003ctd\u003eLarger rectangular blank, copper on one face\u003c\/td\u003e\n\u003ctd\u003eSingle-sided fabrication rather than a direct double-sided substitute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 oz copper-clad board\u003c\/td\u003e\n\u003ctd\u003eMore copper than 1 oz cladding\u003c\/td\u003e\n\u003ctd\u003eCompare electrical and fabrication requirements, not etching speed alone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eThe family also includes 1\/2 oz copper and 1\/32-inch laminate options. Those thinner options do not describe 540.\u003c\/p\u003e\u003ch3\u003eFabrication and Storage Guidance\u003c\/h3\u003e\u003cp\u003eConfirm the layout dimensions, copper weight and need for copper on both faces before fabrication. The manufacturer describes using an anti-etch PCB pen and copper etchant. Plan the patterning and processing of both faces, use each chemical according to its instructions, and inspect the circuit before assembly. Follow the board SDS and instructions for all fabrication tools and chemicals. Store unused boards in an airtight container at 18–27°C in a dry area away from sunlight and humidity.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eWhat size is MG Chemicals 540?\u003c\/h4\u003e\u003cp\u003eEach blank is nominally 3 × 5 inches, listed as 76 × 127 mm, with a 1\/16-inch (1.6 mm) FR4 laminate.\u003c\/p\u003e\u003ch4\u003eDoes 540 have copper on both sides?\u003c\/h4\u003e\u003cp\u003eYes. The manufacturer lists 540 as double-sided copper-clad FR4 with 1 oz copper cladding.\u003c\/p\u003e\u003ch4\u003eWhat does 1 oz copper mean?\u003c\/h4\u003e\u003cp\u003eIt is the copper cladding weight designation. The manufacturer gives a nominal copper thickness of 35 µm or 1.37 mil; it is not the weight of the entire finished board.\u003c\/p\u003e\u003ch4\u003eHow many boards are supplied?\u003c\/h4\u003e\u003cp\u003eThis listing supplies a case of five 540 boards.\u003c\/p\u003e\u003ch4\u003eIs this a finished two-layer PCB?\u003c\/h4\u003e\u003cp\u003eNo. It is an unpatterned blank with copper on both faces. Your design still needs a suitable fabrication process and any required interconnections.\u003c\/p\u003e\u003ch4\u003eHow does it compare with 503?\u003c\/h4\u003e\u003cp\u003eBoth have nominal 3 × 5-inch face dimensions and are listed with 1 oz copper and 1\/16-inch FR4. 540 is double-sided; 503 is single-sided.\u003c\/p\u003e\u003ch4\u003eWhy choose 1 oz instead of 2 oz copper?\u003c\/h4\u003e\u003cp\u003eThe manufacturer notes quicker etching because 1 oz cladding contains less copper to remove. Choose cladding according to circuit and process requirements.\u003c\/p\u003e\u003ch4\u003eHow should unused boards be stored?\u003c\/h4\u003e\u003cp\u003eKeep them at 18–27°C, dry and away from sunlight, sealed in an airtight container and protected from humidity.\u003c\/p\u003e\u003ch3\u003eTechnical and Safety Documents\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-TDS-2025.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Technical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision October 6, 2025, version 3.0.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-SDS-2020.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Safety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision February 28, 2020, version 2.01; includes part 540.\u003c\/p\u003e\u003ch3\u003eRelated Resources\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/mg-chemicals\"\u003e\u003cstrong\u003eShop MG Chemicals\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore the MG Chemicals range.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/pcb-rework-precision-tools\"\u003e\u003cstrong\u003ePCB Rework \u0026amp; Precision Tools Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore related electronics bench tools and rework applications.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39584565199053,"sku":"540","price":62.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-540-double-sided-copper-clad-boards-116-1z-copper-3x5-case-of-5mg-chemicals540-429348.png?v=1735947007"},{"product_id":"double-sided-copper-clad-boards-1-16-1-oz-copper-6x6","title":"MG Chemicals 550, Double Sided Copper Clad Boards, 1\/16\", 1oz Copper, 6\"X6\", Case of 5","description":"\u003ch2\u003eMG Chemicals 550, Double Sided Copper Clad Boards, 1\/16\", 1oz Copper, 6\"X6\", Case of 5\u003c\/h2\u003e\u003cp\u003eMG Chemicals 550 is a double-sided copper-clad FR4 board for PCB prototyping and small production runs. Each nominal 6 × 6-inch square blank combines a 1\/16-inch glass-epoxy laminate with 1 oz copper cladding and copper on both faces. It gives engineers, electronics workshops, students and hobbyists a starting surface for custom circuits requiring two copper faces. This listing supplies a case of five boards.\u003c\/p\u003e\u003ch3\u003eBest Uses \/ Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDouble-sided PCB prototypes fitting a 6 × 6-inch starting blank.\u003c\/li\u003e\n\u003cli\u003eSmall production runs using a suitable resist and etching process.\u003c\/li\u003e\n\u003cli\u003eElectronics education and hands-on circuit fabrication.\u003c\/li\u003e\n\u003cli\u003eCustom square layouts needing more starting area than a 3 × 5-inch blank.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is an unpatterned copper-clad laminate, not a finished circuit, pre-drilled perfboard or solderless breadboard. Copper on both faces does not by itself provide plated-through interconnections.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContinuous woven glass cloth impregnated with epoxy resin.\u003c\/li\u003e\n\u003cli\u003eFR4, described by the manufacturer as the flame-retardant version of G-10.\u003c\/li\u003e\n\u003cli\u003eDouble-sided construction with 1 oz copper cladding, nominally 35 µm or 1.37 mil copper thickness.\u003c\/li\u003e\n\u003cli\u003eLess copper to remove than comparable 2 oz cladding, allowing quicker etching under comparable conditions.\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) cured system and UV-blocking construction.\u003c\/li\u003e\n\u003cli\u003eManufacturer describes easy cutting without specialized equipment; use a suitable method and follow the SDS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \/ part number\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals \/ 550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFamily\u003c\/td\u003e\n\u003ctd\u003e500 Series Copper Clad Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eDouble-sided copper-clad FR4 glass-epoxy laminate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard dimensions\u003c\/td\u003e\n\u003ctd\u003e6 × 6 in. nominal; manufacturer product-page listing 152 × 152 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaminate thickness\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. nominal \/ manufacturer listing 1.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper cladding designation\u003c\/td\u003e\n\u003ctd\u003e1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal copper thickness\u003c\/td\u003e\n\u003ctd\u003e35 µm \/ 1.37 mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSales package\u003c\/td\u003e\n\u003ctd\u003eCase of 5 boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure system\u003c\/td\u003e\n\u003ctd\u003eDICY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV blocking\u003c\/td\u003e\n\u003ctd\u003eYes, per manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-reported conformance\u003c\/td\u003e\n\u003ctd\u003eUL file E214381 and IPC-4101C\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlammability, typical family data\u003c\/td\u003e\n\u003ctd\u003e94 V-0, UL-94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum operating temperature, typical\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass transition temperature, typical\u003c\/td\u003e\n\u003ctd\u003e140°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture absorption, typical\u003c\/td\u003e\n\u003ctd\u003e0.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric constant at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e4.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation factor at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e0.015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric strength, typical\u003c\/td\u003e\n\u003ctd\u003e1,200–1,400 V\/mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeel strength, 1 oz copper, typical\u003c\/td\u003e\n\u003ctd\u003e10–12 lb\/in. as received; 9–12 lb\/in. after thermal stress\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexural strength, typical\u003c\/td\u003e\n\u003ctd\u003e600 MPa warp; 500 MPa fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e18–27°C, dry and away from sunlight; sealed airtight and protected from humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003ePerformance figures are manufacturer-published typical family values for reference, not guaranteed design limits. Qualify the laminate and fabrication process for your assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDimension reference:\u003c\/strong\u003e The manufacturer product page specifies 550 as 152 × 152 mm \/ 6 × 6 inches. The shared TDS lists 6 × 6 inches but gives an inconsistent metric entry of 101 × 152 mm. This description follows the product-page dimensions.\u003c\/p\u003e\u003ch3\u003eCompare the Copper-Clad Board Family\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eSides\u003c\/th\u003e\n\u003cth\u003eNominal size\u003c\/th\u003e\n\u003cth\u003eLaminate \/ copper\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e503\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e506\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e4 × 6 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e515\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e8 × 10 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e521\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e540\u003c\/td\u003e\n\u003ctd\u003eDouble\u003c\/td\u003e\n\u003ctd\u003e3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e550\u003c\/td\u003e\n\u003ctd\u003eDouble\u003c\/td\u003e\n\u003ctd\u003e6 × 6 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e555\u003c\/td\u003e\n\u003ctd\u003eDouble\u003c\/td\u003e\n\u003ctd\u003e12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e588\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e6 × 9 in.\u003c\/td\u003e\n\u003ctd\u003e1\/32 in. \/ 1\/2 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eFamily specifications above follow manufacturer documentation, not potentially conflicting legacy listing titles. Choose size, copper weight, laminate thickness and number of copper faces separately.\u003c\/p\u003e\u003ch3\u003eFabrication and Storage Guidance\u003c\/h3\u003e\u003cp\u003eConfirm layout dimensions and layer requirements before fabrication. The manufacturer describes using an anti-etch PCB pen and copper etchant. Plan patterning and processing for both faces, follow each chemical's instructions, and inspect the circuit before assembly. Follow the board SDS and all tool instructions. Store unused boards in an airtight container at 18–27°C in a dry area away from sunlight and humidity.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eWhat size is MG Chemicals 550?\u003c\/h4\u003e\u003cp\u003eThe manufacturer product page lists 6 × 6 inches, approximately 152 × 152 mm. Its shared TDS contains an inconsistent metric entry; use the product-page size and confirm critical tolerances before fabrication.\u003c\/p\u003e\u003ch4\u003eIs copper present on both sides?\u003c\/h4\u003e\u003cp\u003eYes. 550 is double-sided copper-clad FR4 with the manufacturer's 1 oz copper cladding designation.\u003c\/p\u003e\u003ch4\u003eWhat does 1 oz copper mean?\u003c\/h4\u003e\u003cp\u003eIt is the copper cladding weight designation, with a manufacturer-listed nominal thickness of 35 µm or 1.37 mil. It is not the total board weight.\u003c\/p\u003e\u003ch4\u003eHow many boards are supplied?\u003c\/h4\u003e\u003cp\u003eThis listing supplies a case of five 550 boards.\u003c\/p\u003e\u003ch4\u003eIs this a finished two-layer PCB?\u003c\/h4\u003e\u003cp\u003eNo. It is an unpatterned blank. Your design still needs an appropriate fabrication process and any required interconnections.\u003c\/p\u003e\u003ch4\u003eHow does it differ from 540 and 555?\u003c\/h4\u003e\u003cp\u003eAll three are double-sided 1 oz copper-clad FR4 in the same listed thickness. 540 is 3 × 5 inches, 550 is 6 × 6 inches and 555 is 12 × 12 inches.\u003c\/p\u003e\u003ch4\u003eWhy use 1 oz instead of 2 oz copper?\u003c\/h4\u003e\u003cp\u003eThe manufacturer notes quicker etching because less copper must be removed. Select copper weight for electrical and process requirements, not speed alone.\u003c\/p\u003e\u003ch4\u003eHow should unused boards be stored?\u003c\/h4\u003e\u003cp\u003eKeep at 18–27°C, dry and away from sunlight, sealed in an airtight container and protected from humidity.\u003c\/p\u003e\u003ch3\u003eTechnical and Safety Documents\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-TDS-2025.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Technical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision October 6, 2025, version 3.0.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-SDS-2020.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Safety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision February 28, 2020, version 2.01; includes part 550.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/mgchemicals.com\/products\/circuit-board-design\/copper-clad-boards\/copper-clad-laminate\/\"\u003e\u003cstrong\u003eManufacturer Copper-Clad Laminate Family Reference\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch3\u003eRelated Resources\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/mg-chemicals\"\u003e\u003cstrong\u003eShop MG Chemicals\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore the MG Chemicals range.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/pcb-rework-precision-tools\"\u003e\u003cstrong\u003ePCB Rework \u0026amp; Precision Tools Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore related electronics bench tools and rework applications.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39584566542541,"sku":"550","price":70.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-550-double-sided-copper-clad-boards-116-1oz-copper-6x6-case-of-5mg-chemicals550-910010.png?v=1735946985"},{"product_id":"single-sided-copper-clad-board-1-32-1-oz-copper-6x9","title":"MG Chemicals 588, Single Sided Copper Clad Board, 1\/32\", 1oz. Copper, 6\"X9\", Case of 5","description":"\u003cp\u003e\u003cstrong\u003eMG Chemicals 588, Single Sided Copper Clad Board, 1\/32\", 1oz. Copper, 6\"X9\", Case of 5\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 500 Series are copper clad laminates consisting of continuous woven glass cloth impregnated with epoxy resin. Compared to a 2 oz. copper clad board, 1oz. boards contain less copper making the etching process much quicker. They are made of FR4, which is a flame retardant version of G-10 material.\u003c\/p\u003e\n\u003cp\u003eThese boards are ideal for prototyping and small production runs. They require only an anti-etching pcb pen and copper etchant.  They can easily be used by PCB manufacturers, design engineers, hobbyists, and students.\u003c\/p\u003e\n\u003cul class=\"ul_arrow\"\u003e\n\u003cli\u003eComply with UL (file number E214381) and IPC-4101C\/21\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) Cured System\u003c\/li\u003e\n\u003cli\u003eEasy to cut, with no specialized equipment required\u003c\/li\u003e\n\u003cli\u003eUV blocking\u003c\/li\u003e\n\u003cli\u003eAvailable in 1 oz (1.37 mil, 35 µm) and ½ oz (0.67 mil, 17 µm) copper cladding\u003c\/li\u003e\n\u003cli\u003eAvailable in 1\/16” (1.60 mm) and 1\/32” (0.80 mm) laminate thicknesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/mgchemicals.com\/downloads\/tds\/tds-500-series.pdf\" target=\"_blank\" title='MG Chemicals 588, Single Sided Copper Clad Board, 1\/32\", 1oz. Copper, 6\"X9\", Case of 5' rel=\"noopener noreferrer\"\u003eTechnical Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/mgchemicals.com\/downloads\/msds\/01%20English%20Can-USA%20SDS\/sds-500-series.pdf\" target=\"_blank\" title='MG Chemicals 588, Single Sided Copper Clad Board, 1\/32\", 1oz. Copper, 6\"X9\", Case of 5' rel=\"noopener noreferrer\"\u003eSafety Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39584570671309,"sku":"588","price":84.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-588-single-sided-copper-clad-board-132-1oz-copper-6x9-case-of-5mg-chemicals588-341840.png?v=1735947007"},{"product_id":"single-sided-copper-clad-board-1-16-1-oz-copper","title":"MG Chemicals 503, Single Sided Copper Clad Boards , 1\/16\", 1 Oz Copper, 3\"x5\", Case of 5","description":"\u003ch2\u003eMG Chemicals 503, Single Sided Copper Clad Boards , 1\/16\", 1 Oz Copper, 3\"x5\", Case of 5\u003c\/h2\u003e\u003cp\u003eMG Chemicals 503 is a single-sided copper-clad FR4 board for PCB prototyping and small production runs. Each nominal 3 × 5-inch blank combines a 1\/16-inch glass-epoxy laminate with 1 oz copper cladding on one face. Its compact size provides engineers, electronics workshops, students and hobbyists with a starting surface for custom single-sided circuits. This listing supplies a case of five boards.\u003c\/p\u003e\u003ch3\u003eBest Uses \/ Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSingle-sided PCB prototypes fitting a 3 × 5-inch starting blank.\u003c\/li\u003e\n\u003cli\u003eSmall production runs using an appropriate resist and copper-etching process.\u003c\/li\u003e\n\u003cli\u003eElectronics education and hands-on circuit fabrication.\u003c\/li\u003e\n\u003cli\u003eCompact custom layouts that do not require copper on both faces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is an unpatterned copper-clad laminate, not a finished circuit, pre-drilled perfboard or solderless breadboard. The manufacturer describes fabrication with an anti-etch PCB pen and copper etchant; select the complete fabrication process and handling controls appropriate to your design.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContinuous woven glass cloth impregnated with epoxy resin.\u003c\/li\u003e\n\u003cli\u003eFR4, described by the manufacturer as the flame-retardant version of G-10.\u003c\/li\u003e\n\u003cli\u003eSingle-sided 1 oz copper cladding, nominally 35 µm or 1.37 mil thick.\u003c\/li\u003e\n\u003cli\u003eLess copper to remove than comparable 2 oz cladding, enabling quicker etching under comparable conditions.\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) cured system and UV-blocking construction.\u003c\/li\u003e\n\u003cli\u003eManufacturer describes easy cutting without specialized equipment; use a suitable method and follow the SDS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \/ part number\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals \/ 503\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFamily\u003c\/td\u003e\n\u003ctd\u003e500 Series Copper Clad Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eSingle-sided copper-clad FR4 glass-epoxy laminate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard dimensions\u003c\/td\u003e\n\u003ctd\u003e3 × 5 in. nominal; manufacturer metric listing 76 × 127 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaminate thickness\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. nominal \/ manufacturer listing 1.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper cladding designation\u003c\/td\u003e\n\u003ctd\u003e1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal copper thickness\u003c\/td\u003e\n\u003ctd\u003e35 µm \/ 1.37 mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSales package\u003c\/td\u003e\n\u003ctd\u003eCase of 5 boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure system\u003c\/td\u003e\n\u003ctd\u003eDICY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV blocking\u003c\/td\u003e\n\u003ctd\u003eYes, per manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-reported conformance\u003c\/td\u003e\n\u003ctd\u003eUL file E214381 and IPC-4101C\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlammability, typical family data\u003c\/td\u003e\n\u003ctd\u003e94 V-0, UL-94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum operating temperature, typical\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass transition temperature, typical\u003c\/td\u003e\n\u003ctd\u003e140°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture absorption, typical\u003c\/td\u003e\n\u003ctd\u003e0.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric constant at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e4.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation factor at 1 GHz, typical\u003c\/td\u003e\n\u003ctd\u003e0.015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric strength, typical\u003c\/td\u003e\n\u003ctd\u003e1,200–1,400 V\/mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeel strength, 1 oz copper, typical\u003c\/td\u003e\n\u003ctd\u003e10–12 lb\/in. as received; 9–12 lb\/in. after thermal stress\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexural strength, typical\u003c\/td\u003e\n\u003ctd\u003e600 MPa warp; 500 MPa fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e18–27°C, dry and away from sunlight; sealed airtight and protected from humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003ePerformance figures are manufacturer-published typical family values for reference, not guaranteed design limits. Consult the full TDS and qualify the laminate and fabrication process for the intended assembly.\u003c\/p\u003e\u003ch3\u003eCompare the Copper-Clad Board Family\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eSides\u003c\/th\u003e\n\u003cth\u003eNominal size\u003c\/th\u003e\n\u003cth\u003eLaminate \/ copper\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e503\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e506\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e4 × 6 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e515\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e8 × 10 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e521\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e540\u003c\/td\u003e\n\u003ctd\u003eDouble\u003c\/td\u003e\n\u003ctd\u003e3 × 5 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e550\u003c\/td\u003e\n\u003ctd\u003eDouble\u003c\/td\u003e\n\u003ctd\u003e6 × 6 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e555\u003c\/td\u003e\n\u003ctd\u003eDouble\u003c\/td\u003e\n\u003ctd\u003e12 × 12 in.\u003c\/td\u003e\n\u003ctd\u003e1\/16 in. \/ 1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e588\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003ctd\u003e6 × 9 in.\u003c\/td\u003e\n\u003ctd\u003e1\/32 in. \/ 1\/2 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eFamily specifications follow manufacturer documentation. Choose size, copper weight, laminate thickness and number of copper faces separately. For the same nominal 3 × 5-inch size with copper on both faces, compare 540. The family's thinner 1\/2 oz copper (17 µm \/ 0.67 mil) and 1\/32-inch laminate options do not describe 503.\u003c\/p\u003e\u003ch3\u003eFabrication and Storage Guidance\u003c\/h3\u003e\u003cp\u003eConfirm layout dimensions, copper weight and layer requirements before fabrication. Apply a suitable etch resist, use a compatible copper etchant according to its instructions, and inspect the resulting circuit before assembly. Follow the board SDS and the instructions for each fabrication tool and chemical. Store unused boards in an airtight container at 18–27°C in a dry area away from sunlight and humidity.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eWhat size is MG Chemicals 503?\u003c\/h4\u003e\u003cp\u003eEach blank is nominally 3 × 5 inches, listed as 76 × 127 mm, with a 1\/16-inch (1.6 mm) FR4 laminate.\u003c\/p\u003e\u003ch4\u003eIs copper present on both sides?\u003c\/h4\u003e\u003cp\u003eNo. 503 has copper cladding on one face. The manufacturer's 540 is a double-sided option with the same nominal face dimensions.\u003c\/p\u003e\u003ch4\u003eWhat does 1 oz copper mean?\u003c\/h4\u003e\u003cp\u003eIt is the copper cladding weight designation. The manufacturer gives a nominal thickness of 35 µm or 1.37 mil; it is not the total finished board weight.\u003c\/p\u003e\u003ch4\u003eHow many boards are supplied?\u003c\/h4\u003e\u003cp\u003eThis listing supplies a case of five 503 boards.\u003c\/p\u003e\u003ch4\u003eIs this ready for components?\u003c\/h4\u003e\u003cp\u003eIt is an unpatterned blank rather than a finished circuit. Your design requires an appropriate fabrication process and any additional operations needed.\u003c\/p\u003e\u003ch4\u003eHow does 503 differ from 506?\u003c\/h4\u003e\u003cp\u003eBoth are single-sided 1 oz copper-clad FR4 with a listed 1\/16-inch laminate. 503 is 3 × 5 inches; 506 is 4 × 6 inches.\u003c\/p\u003e\u003ch4\u003eWhy choose 1 oz instead of 2 oz copper?\u003c\/h4\u003e\u003cp\u003eThe manufacturer notes quicker etching because there is less copper to remove. Choose copper weight for the circuit's electrical and fabrication requirements, not etching speed alone.\u003c\/p\u003e\u003ch4\u003eHow should unused boards be stored?\u003c\/h4\u003e\u003cp\u003eKeep at 18–27°C, dry and away from sunlight, sealed in an airtight container and protected from humidity.\u003c\/p\u003e\u003ch3\u003eTechnical and Safety Documents\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-TDS-2025.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Technical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision October 6, 2025, version 3.0.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-500-Series-Copper-Clad-SDS-2020.pdf?v=1794071708\"\u003e\u003cstrong\u003eMG Chemicals 500 Series Copper Clad Boards Safety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eManufacturer revision February 28, 2020, version 2.01; includes part 503.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/mgchemicals.com\/products\/circuit-board-design\/copper-clad-boards\/copper-clad-laminate\/\"\u003e\u003cstrong\u003eManufacturer Copper-Clad Laminate Family Reference\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch3\u003eRelated Resources\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/mg-chemicals\"\u003e\u003cstrong\u003eShop MG Chemicals\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore the MG Chemicals range.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/pcb-rework-precision-tools\"\u003e\u003cstrong\u003ePCB Rework \u0026amp; Precision Tools Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eExplore related electronics bench tools and rework applications.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39632283304141,"sku":"503","price":42.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-503-single-sided-copper-clad-boards-116-1-oz-copper-3x5-case-of-5mg-chemicals503-231238.jpg?v=1735947006"},{"product_id":"copper-clad-board-single-sided-1-161-oz-copper","title":"MG Chemicals 555, Copper Clad Board Single Sided, 1\/16\", 1oz Copper, 12\"x12\", Case of 5","description":"\u003ch3\u003eMG Chemicals 555 – Copper Clad Board, Single Sided, 1\/16\", 1oz Copper, 12x12 in | Case of 5\u003c\/h3\u003e\n\n\u003cp\u003eThe MG Chemicals 555 is a single-sided FR4 copper clad laminate consisting of continuous woven glass cloth impregnated with epoxy resin, clad with 1oz (1.37 mil \/ 35μm) copper on one side. Compliant with UL (file E214381) and IPC-4101C\/21, it is designed for PCB prototyping, small production runs, and educational use. Easy to cut without specialized equipment, UV blocking, and compatible with standard anti-etching PCB pens and copper etchants.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSold in cases of 5 boards.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e555\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle sided copper clad laminate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFR4 (flame retardant G-10 epoxy\/woven glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCuring System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDICY (dicyandiamide) cured\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLaminate Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/16 in (1.60mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCopper Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1oz (1.37 mil \/ 35μm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 x 12 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 boards per case\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUV Blocking\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL Listed (E214381), IPC-4101C\/21 compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/mgchemicals.com\/downloads\/tds\/tds-500-series.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eTechnical Data Sheet (PDF)\u003c\/strong\u003e\u003c\/a\u003e  |  \u003ca href=\"https:\/\/mgchemicals.com\/downloads\/msds\/01%20English%20Can-USA%20SDS\/sds-500-series.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eSafety Data Sheet (PDF)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between 1oz and 2oz copper clad boards?\u003c\/strong\u003e\u003cbr\u003e\n1oz copper cladding (1.37 mil \/ 35μm) contains less copper than 2oz boards, which makes the chemical etching process significantly faster and easier to control. For most prototyping and low-current applications, 1oz copper is the standard choice. 2oz copper is used when lower trace resistance or higher current capacity is required, such as in power electronics or high-current PCB designs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat etching process is compatible with the MG Chemicals 555?\u003c\/strong\u003e\u003cbr\u003e\nThe 555 is compatible with standard PCB etching processes using ferric chloride or ammonium persulfate etchants, combined with an anti-etching PCB pen or photoresist for trace masking. No specialized equipment is required — it is suitable for hobbyists, students, and engineers prototyping in a lab or workshop environment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does FR4 mean and why does it matter?\u003c\/strong\u003e\u003cbr\u003e\nFR4 designates a flame-retardant grade of woven glass\/epoxy laminate — the most widely used PCB substrate material in electronics manufacturing. It provides good mechanical strength, dimensional stability, and electrical insulation. The MG Chemicals 555 uses a DICY-cured FR4 system, which is the standard curing chemistry for commercial PCB laminates and is compatible with standard PCB fabrication processes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this board be used with a CNC router or laser cutter?\u003c\/strong\u003e\u003cbr\u003e\nYes. The 555 can be cut with standard woodworking tools, CNC routers, or scored and snapped without specialized equipment. For laser cutting, note that FR4 produces hazardous fumes — use appropriate ventilation and PPE. Always refer to the Safety Data Sheet before cutting or machining.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39632283533517,"sku":"555","price":176.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-555-copper-clad-board-single-sided-116-1oz-copper-12x12-case-of-5mg-chemicals555-301360.png?v=1735947007"},{"product_id":"circuitworks-cconductive-pen","title":"Chemtronics CW2200MTP Circuit Trace Conductive Pen With Micro Tip For Fine Lines","description":"\u003cdiv class=\"prod-section-heading\"\u003e\u003cstrong\u003eProduct Description:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan class=\"prod-description\" id=\"_ctl0__ctl0__ctl0_pageContent_pageContent_pageContent_Description\"\u003eCircuitWorks® Conductive Pens make instant highly conductive silver traces on circuit boards and are used in prototype, rework, and repair of circuit boards by linking components, repairing defective traces, making smooth jumpers. The silver traces dry in minutes and have excellent adhesion to most electronic materials. Engineers, repair technicians, and manufacturers will find that the CircuitWorks® Conductive Pen speeds project completion and cuts rework time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"prod-section-heading\"\u003e\u003cstrong\u003eProduct Features:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul class=\"prod-features\"\u003e\n\u003cli\u003eQuickly creates conductive silver traces\u003c\/li\u003e\n\u003cli\u003eValve pen tip for easy applications\u003c\/li\u003e\n\u003cli\u003eSolderable at low temperatures\u003c\/li\u003e\n\u003cli\u003eSuperior electrical conductivity\u003c\/li\u003e\n\u003cli\u003eDries in minutes at room temperature\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chemtronics","offers":[{"title":"Default Title","offer_id":39632297459917,"sku":"CW2200MTP","price":85.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/chemtronics-cw2200mtp-circuit-trace-conductive-pen-with-micro-tip-for-fine-lineschemtronicscw2200mtp-102570.jpg?v=1735939364"},{"product_id":"ammonium-persulphate-etchant","title":"MG Chemicals 410-1KG, Ammonium Persulphate Etchant, 2.2 lbs, Crystals, Case of 6","description":"\u003ch2\u003eMG Chemicals 410-1KG — Ammonium Persulphate PCB Etchant, 1kg Crystals, Case of 6\u003c\/h2\u003e\u003cp\u003eMG Chemicals 410-1KG (SKU: 410-1KG) is an ammonium persulphate copper etchant in crystal form — a clean, transparent alternative to traditional ferric chloride for PCB etching. One kilogram of ammonium persulphate crystals mixed with water produces four liters of etching solution. The transparent solution allows visual inspection of the etching process as it progresses, unlike the opaque brown ferric chloride solution. Non-staining and compatible with tin etch resist. CARB compliant. Sold in cases of 6 (1kg per container).\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number \/ SKU\u003c\/td\u003e\n\u003ctd\u003e410-1KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical\u003c\/td\u003e\n\u003ctd\u003eAmmonium Persulphate (Ammonium Persulfate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\u003c\/td\u003e\n\u003ctd\u003eCrystals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight per Container\u003c\/td\u003e\n\u003ctd\u003e1 kg (2.2 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Quantity\u003c\/td\u003e\n\u003ctd\u003e6 containers per case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution Yield\u003c\/td\u003e\n\u003ctd\u003e4 liters of etching solution per 1kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution Appearance\u003c\/td\u003e\n\u003ctd\u003eTransparent (allows visual process inspection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEtch Resist Compatibility\u003c\/td\u003e\n\u003ctd\u003eCompatible with tin etch resist\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStaining\u003c\/td\u003e\n\u003ctd\u003eNon-staining\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eCARB compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerric chloride alternative\u003c\/strong\u003e — produces a cleaner copper etchant solution without the mess and staining of ferric chloride\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransparent solution\u003c\/strong\u003e — allows visual inspection of the etching process to monitor progress and endpoint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-staining\u003c\/strong\u003e — does not permanently stain skin, clothing, or work surfaces the way ferric chloride does\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin resist compatible\u003c\/strong\u003e — suitable for use with tin etch resist in PCB fabrication workflows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh yield\u003c\/strong\u003e — 1kg produces 4 liters of ready-to-use etching solution\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow does ammonium persulphate compare to ferric chloride for PCB etching?\u003c\/strong\u003e\u003cbr\u003eAmmonium persulphate offers several practical advantages over ferric chloride: the solution is transparent (allowing you to see the board during etching), it is non-staining (ferric chloride permanently stains skin and surfaces), and it produces a cleaner etch. The main trade-off is that ammonium persulphate solution has a shorter working life than ferric chloride and works best when heated (typically 40–50°C). Ferric chloride works at room temperature but is messier and harder to dispose of.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I mix the 410 crystals into etching solution?\u003c\/strong\u003e\u003cbr\u003eDissolve 1kg of MG Chemicals 410 ammonium persulphate crystals in water to make 4 liters of etching solution. Always add crystals to water (not water to crystals) and stir until fully dissolved. For best etching performance, heat the solution to 40–50°C. Refer to the MG Chemicals TDS for complete mixing and usage instructions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs ammonium persulphate compatible with tin etch resist?\u003c\/strong\u003e\u003cbr\u003eYes — MG Chemicals 410 is compatible with tin etch resist, making it suitable for standard PCB fabrication workflows where tin is used to protect copper traces during the etching process.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow should used ammonium persulphate etchant be disposed of?\u003c\/strong\u003e\u003cbr\u003eSpent ammonium persulphate solution contains dissolved copper and must be disposed of as hazardous waste in accordance with local regulations. Do not pour down the drain. Contact your local waste disposal authority or a licensed hazardous waste disposal service. Refer to the MG Chemicals SDS for complete disposal guidance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shelf life of the 410 crystals?\u003c\/strong\u003e\u003cbr\u003eAmmonium persulphate crystals are stable when stored in a cool, dry location away from heat, moisture, and incompatible materials. Once dissolved into solution, the working life is limited — the solution becomes exhausted as it etches copper. Refer to the MG Chemicals TDS for specific storage and shelf life information.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.mgchemicals.com\/downloads\/tds\/tds-410.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTechnical Data Sheet (TDS)\u003c\/a\u003e | \u003ca href=\"https:\/\/www.mgchemicals.com\/downloads\/msds\/01%20English%20Can-USA%20SDS\/sds-410.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSafety Data Sheet (SDS)\u003c\/a\u003e\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39633304813773,"sku":"410-1KG","price":179.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-410-1kg-ammonium-persulphate-etchant-22-lbs-crystals-case-of-6mg-chemicals410-1kg-221644.png?v=1735946983"},{"product_id":"ferric-chloride-solution-42-degree-baume-33-oz","title":"MG Chemicals 415-1L, Ferric Chloride Solution, 42 Degree Baume, 1L Bottles, Case of 6","description":"\u003ch2\u003eMG Chemicals 415-1L — Ferric Chloride Solution, 42° Baumé, 1L Bottles, Case of 6\u003c\/h2\u003e\u003cp\u003eMG Chemicals 415-1L (SKU: 415-1L) is a ready-to-use ferric chloride solution at 42° Baumé concentration, supplied in 945 mL (1L) bottles in cases of 6. It is a widely used copper etchant for printed circuit board (PCB) fabrication and photoengraving, and is also effective on a broad range of metals including brass, bronze, Damascus steel, and stainless steel. Used across electronics manufacturing, jewelry making, metalsmithing, and decorative art applications.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number \/ SKU\u003c\/td\u003e\n\u003ctd\u003e415-1L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical\u003c\/td\u003e\n\u003ctd\u003eFerric chloride solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentration\u003c\/td\u003e\n\u003ctd\u003e42° Baumé\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e945 mL (1L) per bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Quantity\u003c\/td\u003e\n\u003ctd\u003e6 bottles per case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\u003c\/td\u003e\n\u003ctd\u003eReady-to-use liquid solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eCopper etching, PCB fabrication, photoengraving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Metals\u003c\/td\u003e\n\u003ctd\u003eCopper, brass, bronze, Damascus steel, stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMG Chemicals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePCB fabrication and copper etching\u003c\/li\u003e\n\u003cli\u003ePhotoengraving processes\u003c\/li\u003e\n\u003cli\u003eJewelry making and metalsmithing\u003c\/li\u003e\n\u003cli\u003eDecorative art knife and metalwork etching\u003c\/li\u003e\n\u003cli\u003eSteel sign acid etching\u003c\/li\u003e\n\u003cli\u003eEtching pattern welds and Damascus steel\u003c\/li\u003e\n\u003cli\u003eEtching on stone surfaces\u003c\/li\u003e\n\u003cli\u003eColorant in pit-firing pottery\u003c\/li\u003e\n\u003cli\u003eGlass casting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does 42° Baumé mean for ferric chloride?\u003c\/strong\u003e\u003cbr\u003eBaumé (Bé) is a scale used to measure the density of liquids. For ferric chloride, 42° Baumé indicates a concentrated, ready-to-use solution that provides effective etching rates for copper PCB fabrication and metalwork without requiring dilution. This is the standard concentration used in most PCB etching applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan 415-1L be used to etch PCBs at home or in a lab?\u003c\/strong\u003e\u003cbr\u003eYes — MG Chemicals 415-1L is a popular choice for both hobbyist and professional PCB etching. It is ready to use straight from the bottle. For best results, warm the solution slightly (around 40°C) and agitate during etching to improve etch rate and uniformity. Always use appropriate PPE (gloves, eye protection) and work in a ventilated area.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat metals can ferric chloride etch?\u003c\/strong\u003e\u003cbr\u003eFerric chloride is most commonly used to etch copper, but it also etches brass, bronze, Damascus steel, and stainless steel. Etch rates and results vary by metal — refer to the MG Chemicals TDS for guidance on specific metals and applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I dispose of used ferric chloride solution?\u003c\/strong\u003e\u003cbr\u003eUsed ferric chloride (which contains dissolved copper) must be disposed of as hazardous waste in accordance with local regulations. Do not pour it down the drain. Contact your local waste disposal authority or a licensed hazardous waste disposal service. Refer to the MG Chemicals SDS for full disposal guidance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between 415-1L and 415-4L?\u003c\/strong\u003e\u003cbr\u003eBoth contain the same 42° Baumé ferric chloride formula. The 415-1L is a 945 mL bottle sold in cases of 6, suitable for lab, rework, and moderate-volume etching. The 415-4L is a larger 4-liter format for higher-volume production etching. Choose based on your consumption rate and storage capacity.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.mgchemicals.com\/downloads\/tds\/tds-415-l.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTechnical Data Sheet (TDS)\u003c\/a\u003e | \u003ca href=\"https:\/\/www.mgchemicals.com\/downloads\/msds\/01%20English%20Can-USA%20SDS\/sds-415-l.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSafety Data Sheet (SDS)\u003c\/a\u003e\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39633305108685,"sku":"415-1L","price":108.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-415-1l-ferric-chloride-solution-42-degree-baume-1l-bottles-case-of-6mg-chemicals415-1l-599868.jpg?v=1735946983"},{"product_id":"ferric-chloride-solution-42-degree-baume-1-gallon-4-5-l","title":"MG Chemicals 415-4L, Ferric Chloride Solution, 42 Degree Baume, 4 Liter Bottle, Case of 1","description":"\u003ch2\u003eMG Chemicals 415-4L — Ferric Chloride Solution, 42° Baumé, 4 Liter Bottle\u003c\/h2\u003e\n\n\u003cp\u003eMG Chemicals 415-4L is a ready-to-use ferric chloride (FeCl₃) etching solution at 42° Baumé concentration, formulated for etching copper from printed circuit boards (PCBs) and other copper-clad substrates. The 4-liter bottle format is ideal for lab, prototyping, and small-production PCB fabrication operations requiring consistent, repeatable etch results.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 415-4L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical:\u003c\/strong\u003e Ferric Chloride (FeCl₃)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentration:\u003c\/strong\u003e 42° Baumé\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4 liter bottle, case of 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Ready-to-use liquid solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Copper etching for PCB fabrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEtching copper from PCB and copper-clad laminates\u003c\/li\u003e\n\u003cli\u003ePCB prototyping and small-batch fabrication\u003c\/li\u003e\n\u003cli\u003eLab and educational electronics fabrication\u003c\/li\u003e\n\u003cli\u003eEtching copper foil for RF shielding and artwork applications\u003c\/li\u003e\n\u003cli\u003eGeneral copper removal in electronics manufacturing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does 42° Baumé mean for ferric chloride?\u003c\/strong\u003e\u003cbr\u003e\n42° Baumé refers to the specific gravity\/concentration of the ferric chloride solution. This is the standard working concentration for PCB etching — strong enough for efficient copper removal without being overly aggressive on resist materials.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs MG Chemicals 415 ready to use or does it need dilution?\u003c\/strong\u003e\u003cbr\u003e\nIt is ready to use at 42° Baumé concentration. No dilution is required for standard PCB etching. Warming the solution to 40–50°C can speed up etch times significantly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I dispose of used ferric chloride solution?\u003c\/strong\u003e\u003cbr\u003e\nSpent ferric chloride contains dissolved copper and must be disposed of as hazardous waste in accordance with local regulations. Do not pour down the drain. Contact your local hazardous waste disposal facility for guidance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the shelf life of MG Chemicals 415 ferric chloride?\u003c\/strong\u003e\u003cbr\u003e\nUnopened, ferric chloride solution has a shelf life of approximately 2 years when stored in a cool, dark location. Once used, the solution becomes saturated with copper over time and will etch more slowly — replace when etch times become unacceptably long.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs ferric chloride safe to use at home or in a lab?\u003c\/strong\u003e\u003cbr\u003e\nFerric chloride is corrosive and will stain skin, clothing, and surfaces permanently. Always wear chemical-resistant gloves, eye protection, and work in a well-ventilated area. Avoid contact with metals other than copper, as it will etch them as well.\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39633305174221,"sku":"415-4L","price":59.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-415-4l-ferric-chloride-solution-42-degree-baume-4-liter-bottle-case-of-1mg-chemicals415-4l-288765.jpg?v=1750458052"},{"product_id":"single-sided-copper-clad-board-1-16-1-oz-copper-506","title":"MG Chemicals 506, Single Sided Copper Clad Board, 1\/16\", 1 Oz Copper, 4\"x6\", Case of 5","description":"\u003cp\u003e\u003cstrong\u003eMG Chemicals 506, Single Sided Copper Clad Board, 1\/16\", 1 Oz Copper, 4\"x6\", Case of 5\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 500 Series are copper clad laminates consisting of continuous woven glass cloth impregnated with epoxy resin. Compared to a 2 oz. copper clad board, 1oz. boards contain less copper making the etching process much quicker. They are made of FR4, which is a flame retardant version of G-10 material.\u003c\/p\u003e\n\u003cp\u003eThese boards are ideal for prototyping and small production runs. They require only an anti-etching pcb pen and copper etchant.  They can easily be used by PCB manufacturers, design engineers, hobbyists, and students.\u003c\/p\u003e\n\u003cul class=\"ul_arrow\"\u003e\n\u003cli\u003eComply with UL (file number E214381) and IPC-4101C\/21\u003c\/li\u003e\n\u003cli\u003eDICY (dicyandiamide) Cured System\u003c\/li\u003e\n\u003cli\u003eEasy to cut, with no specialized equipment required\u003c\/li\u003e\n\u003cli\u003eUV blocking\u003c\/li\u003e\n\u003cli\u003eAvailable in 1 oz (1.37 mil, 35 µm) and ½ oz (0.67 mil, 17 µm) copper cladding\u003c\/li\u003e\n\u003cli\u003eAvailable in 1\/16” (1.60 mm) and 1\/32” (0.80 mm) laminate thicknesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.mgchemicals.com\/downloads\/tds\/tds-500-series.pdf\" title='MG Chemicals 506, Single Sided Copper Clad Board, 1\/16\", 1 Oz Copper, 4\"x6\", Case of 5' target=\"_blank\"\u003eTechnical Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.mgchemicals.com\/downloads\/msds\/01%20English%20Can-USA%20SDS\/sds-500-series.pdf\" title='MG Chemicals 506, Single Sided Copper Clad Board, 1\/16\", 1 Oz Copper, 4\"x6\", Case of 5' target=\"_blank\"\u003eSafety Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":39633315889357,"sku":"506","price":50.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-506-single-sided-copper-clad-board-116-1-oz-copper-4x6-case-of-5mg-chemicals506-943257.jpg?v=1735947006"},{"product_id":"mg-chemicals-842ar-p-silver-conductive-pen-5ml-pen-case-of-5","title":"MG Chemicals 842AR-P Silver Conductive Pen, 5 mL, Case of 5","description":"\u003ch2\u003eMG Chemicals 842AR-P Silver Conductive Pen, 5 mL, Case of 5\u003c\/h2\u003e\u003cp\u003eMG Chemicals 842AR-P dispenses silver-flake-pigmented acrylic lacquer for drawing conductive traces and repairing circuits. The cured traces are durable, flexible, corrosion resistant, and highly conductive, with good adhesion to plastics and most electronics substrates. A pressure-activated valve tip and squeezable barrel let the user control dispensing on smooth, flat, hard surfaces.\u003c\/p\u003e\u003cp\u003eThis listing supplies five pens, each containing 5 mL. Choose this pen format for localized trace work rather than broad-area coating with a brush or spray.\u003c\/p\u003e\u003ch3\u003eBest Uses \/ Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrawing circuits for prototyping, hobby, and maker projects.\u003c\/li\u003e\n\u003cli\u003eRepairing damaged circuits on keyboards, game controllers, remote controls, mixing boards, and PCBs.\u003c\/li\u003e\n\u003cli\u003eMaking small circuit connections, including jumpers, through-holes, and bridges.\u003c\/li\u003e\n\u003cli\u003eIncreasing contact surface area by painting around existing contacts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSilver-flake acrylic lacquer forms conductive traces.\u003c\/li\u003e\n\u003cli\u003eListed resistivity: 1.0 × 10\u003csup\u003e-4\u003c\/sup\u003e Ω·cm.\u003c\/li\u003e\n\u003cli\u003eTypical trace width: 1.5–2.0 mm.\u003c\/li\u003e\n\u003cli\u003eManufacturer-listed drying time: 1 minute at room temperature; drying is not necessarily full cure.\u003c\/li\u003e\n\u003cli\u003eValve tip opens against the surface; barrel pressure controls flow.\u003c\/li\u003e\n\u003cli\u003eDurable, flexible cured circuits with corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eMG Chemicals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e842AR-P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSilver conductive pen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoating\u003c\/th\u003e\n\u003ctd\u003eAcrylic lacquer with conductive silver flakes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNet volume per pen\u003c\/th\u003e\n\u003ctd\u003e5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePens per case\u003c\/th\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eListed resistivity\u003c\/th\u003e\n\u003ctd\u003e1.0 × 10\u003csup\u003e-4\u003c\/sup\u003e Ω·cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical trace width\u003c\/th\u003e\n\u003ctd\u003e1.5–2.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eListed drying time\u003c\/th\u003e\n\u003ctd\u003e1 minute at room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePreferred working surface\u003c\/th\u003e\n\u003ctd\u003eSmooth, flat, hard surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003ePen vs. Liquid-Can Format\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eConsideration\u003c\/th\u003e\n\u003cth\u003e842AR-P pen\u003c\/th\u003e\n\u003cth\u003e842AR liquid can\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eValve-tip dispensing for drawing traces\u003c\/td\u003e\n\u003ctd\u003eBrush or spray application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical selection\u003c\/td\u003e\n\u003ctd\u003eLocalized circuit repair and prototyping\u003c\/td\u003e\n\u003ctd\u003eCoating larger areas, including enclosure shielding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumentation\u003c\/td\u003e\n\u003ctd\u003eUse pen-specific TDS and SDS\u003c\/td\u003e\n\u003ctd\u003eUse liquid-specific TDS and SDS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eIs 842AR-P discontinued?\u003c\/h4\u003e\u003cp\u003eThe pen remains listed by MG Chemicals. Discontinuation of the 842AR-15ML and 842AR-150ML liquid sizes should not be applied to this pen.\u003c\/p\u003e\u003ch4\u003eHow many pens are included?\u003c\/h4\u003e\u003cp\u003eThis listing is a case of five pens, with 5 mL per pen.\u003c\/p\u003e\u003ch4\u003eHow wide is the trace?\u003c\/h4\u003e\u003cp\u003eMG Chemicals lists a typical trace width of 1.5–2.0 mm. Actual results depend on application technique and the surface.\u003c\/p\u003e\u003ch4\u003eHow is the lacquer dispensed?\u003c\/h4\u003e\u003cp\u003eThe valve tip opens when pressed against a surface, and squeezing the barrel controls the flow. Follow the pen TDS for preparation and use.\u003c\/p\u003e\u003ch4\u003eWhat circuits can it repair?\u003c\/h4\u003e\u003cp\u003eManufacturer examples include keyboards, game controllers, remote controls, mixing boards, and PCBs. Validate the completed repair for your circuit requirements.\u003c\/p\u003e\u003ch4\u003eDoes one-minute drying mean the repair is fully cured?\u003c\/h4\u003e\u003cp\u003eNo. The product page lists one-minute drying at room temperature. Follow the pen TDS for curing and readiness for service before energizing or handling a repaired circuit.\u003c\/p\u003e\u003ch4\u003eDoes resistivity equal the resistance of my finished trace?\u003c\/h4\u003e\u003cp\u003eNo. Resistivity is a material property. Finished trace resistance also depends on length, width, thickness, and processing.\u003c\/p\u003e\u003ch4\u003eCan I use the liquid-can technical sheets for this pen?\u003c\/h4\u003e\u003cp\u003eUse the pen-specific documents. MG Chemicals supplies a separate TDS for the pen, and its dispensing instructions and formulation information should not be assumed identical to the liquid-can version.\u003c\/p\u003e\u003ch3\u003eTechnical Documents\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/MG-842AR-P-SDS.pdf?v=1793198298\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMG Chemicals 842AR-P Safety Data Sheet (SDS)\u003c\/a\u003e\u003c\/p\u003e","brand":"MG Chemicals","offers":[{"title":"Default Title","offer_id":41543148110029,"sku":"842AR-P","price":640.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/mg-chemicals-842ar-p-silver-conductive-pen-5ml-pen-case-of-5mg-chemicals842ar-p-909498.jpg?v=1735954301"},{"product_id":"circuitworks-conductive-pen-stnd","title":"Chemtronics CW2200STP, CircuitWorks Silver Conductive Pen, Stnd Tip, 0.3oz Pen","description":"\u003cp\u003e\u003cstrong\u003eChemtronics CW2200STP, CircuitWorks Silver Conductive Pen, Stnd Tip, 0.3oz Pen, \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8.5g (0.3oz) Pen\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"full-description\" itemprop=\"description\"\u003e\n\u003cp\u003eCircuitWorks\u003cspan\u003e\u003csup\u003e®\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eConductive Pens make instant highly conductive silver traces on circuit boards and are used in\u003cspan\u003e \u003c\/span\u003e, rework, and repair of circuit boards by linking components, repairing defective traces, making smooth jumpers. The silver traces of the circuit pen dry in minutes and have excellent adhesion to most electronic materials. Engineers, repair technicians, and manufacturers will find that the CircuitWorks\u003cspan\u003e\u003csup\u003e®\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eConductive Circuit Pen speeds project completion and cuts rework time.\u003c\/p\u003e\n\u003cp\u003eCircuitWorks Conductive Pens are available in 3 types of inks:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilver Conductive Pen (CW2200STP, CW2200MTP)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Highly conductive and the most popular option. Available with either the standard tip (CW2200STP) or micro tip (CW2200MTP).\u003cbr\u003eConductivity - 0.02-0.05 ohms\/sq\/mil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilver Flex Conductive Pen (CW2900)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Also silver-based, and engineered for flexible PCBs. Only available with the standard tip.\u003cbr\u003eCondictivity - 0.05-0.15 ohms\/sq\/mil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel Conductive Pen (CW2000)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Lower cost nickel-based ink. Only available with the standard tip.\u003cbr\u003eConductivity - 1.0 – 1.5 ohms\/sq\/mil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFEATURES \u0026amp; BENEFITS\u003c\/h3\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli\u003eQuickly creates conductive silver traces\u003c\/li\u003e\n\u003cli\u003eValve pen tip for easy applications\u003c\/li\u003e\n\u003cli\u003eSolderable at low temperatures\u003c\/li\u003e\n\u003cli\u003eSuperior electrical conductivity\u003c\/li\u003e\n\u003cli\u003eDries in minutes at room temperature\u003c\/li\u003e\n\u003cli\u003eChoice of Micro Tip (MTP) for fine lines or Standard Tip (STP) for wider lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAPPLICATIONS\u003c\/h3\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli\u003eRepairs traces\u003c\/li\u003e\n\u003cli\u003eLinks components\u003c\/li\u003e\n\u003cli\u003eMakes smooth jumpers\u003c\/li\u003e\n\u003cli\u003eShields electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.chemtronics.com\/content\/msds\/TDS_CW2200-CW2205.pdf\" target=\"_blank\" title=\"Chemtronics CW2200STP, CircuitWorks Silver Conductive Pen, Stnd Tip, 0.3oz Pen\" rel=\"noopener\"\u003eTechnical Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.chemtronics.com\/content\/msds\/CW2200%20STP,%20CW2200MTP_Canada%20(CA)%20SDS%20HPR%202015_English%20(US).pdf\" target=\"_blank\" title=\"Chemtronics CW2200STP, CircuitWorks Silver Conductive Pen, Stnd Tip, 0.3oz Pen\" rel=\"noopener\"\u003eSafety Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Chemtronics","offers":[{"title":"Default Title","offer_id":41722408009933,"sku":"CW2200STP","price":86.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/chemtronics-cw2200stp-circuitworks-silver-conductive-pen-stnd-tip-03oz-penchemtronicscw2200stp-594243.jpg?v=1735939365"},{"product_id":"circuitworks-overcoat-pen-clear","title":"Chemtronics CW3300C, CircuitWorks Overcoat Pen, Clear, 0.16oz Pen","description":"\u003cp\u003e\u003cstrong\u003eChemtronics CW3300C, CircuitWorks Overcoat Pen, Clear, 0.16oz Pen\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eClear\u003cspan\u003e - 4.9 g (0.16 oz.) pen, blister cards\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"full-description\" itemprop=\"description\"\u003e\n\u003cp\u003eCircuitWorks Overcoat Pen is ideal for protecting and insulating circuit board traces, components, and other delicate electronics. This highly effective acrylic conformal coating provides excellent protection against shorts, moisture, abrasion, fungus, and other environmental hazards. Allows for easy repair of solder mask in prototype, manufacture and repair of circuit boards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFEATURES \u0026amp; BENEFITS\u003c\/h3\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli\u003eSimple to use, single component system\u003c\/li\u003e\n\u003cli\u003eHard, durable coating\u003c\/li\u003e\n\u003cli\u003eHigh dielectric strength helps prevent electrical discharge\u003c\/li\u003e\n\u003cli\u003eDries quickly at room temperature\u003c\/li\u003e\n\u003cli\u003eProtects against moisture and abrasion damage\u003c\/li\u003e\n\u003cli\u003eMeets requirements of MIL-I-46058C and IPC-CC-830A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAPPLICATIONS\u003c\/h3\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli\u003eInsulates and protects conductive pen traces\u003c\/li\u003e\n\u003cli\u003eRepairs permanent solder mask\u003c\/li\u003e\n\u003cli\u003ePrevents shorting and arcing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.chemtronics.com\/content\/msds\/TDS_CW3300.pdf\" target=\"_blank\" title=\"Chemtronics CW3300C, CircuitWorks Overcoat Pen, Clear, 0.16oz Pen\" rel=\"noopener\"\u003eTechnical Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.chemtronics.com\/content\/msds\/CW3300C,%20CW3300G_United%20States%20(US)%20SDS%20HCS%202012_English%20(US)%20%202021.pdf\" target=\"_blank\" title=\"Chemtronics CW3300C, CircuitWorks Overcoat Pen, Clear, 0.16oz Pen\" rel=\"noopener\"\u003eSafety Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Chemtronics","offers":[{"title":"Default Title","offer_id":41722408730829,"sku":"CW3300C","price":31.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/files\/chemtronics-cw3300c-circuitworks-overcoat-pen-clear-016oz-penchemtronicscw3300c-616959.jpg?v=1735939364"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4181\/4733\/collections\/pcb-fabrication-and-circuit-repair-collection-image-draft.png?v=1794240014","url":"https:\/\/mtesolutionsinc.com\/collections\/pcb-fabrication-circuit-repair.oembed","provider":"MTESolutions","version":"1.0","type":"link"}