MG Chemicals 842AR-P Silver Conductive Pen, 5 mL, Case of 5
MG Chemicals 842AR-P Silver Conductive Pen, 5 mL, Case of 5
MG 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.
This 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.
Best Uses / Applications
- Drawing circuits for prototyping, hobby, and maker projects.
- Repairing damaged circuits on keyboards, game controllers, remote controls, mixing boards, and PCBs.
- Making small circuit connections, including jumpers, through-holes, and bridges.
- Increasing contact surface area by painting around existing contacts.
Key Features
- Silver-flake acrylic lacquer forms conductive traces.
- Listed resistivity: 1.0 × 10-4 Ω·cm.
- Typical trace width: 1.5–2.0 mm.
- Manufacturer-listed drying time: 1 minute at room temperature; drying is not necessarily full cure.
- Valve tip opens against the surface; barrel pressure controls flow.
- Durable, flexible cured circuits with corrosion resistance.
Technical Specifications
| Manufacturer | MG Chemicals |
|---|---|
| SKU | 842AR-P |
| Product | Silver conductive pen |
| Coating | Acrylic lacquer with conductive silver flakes |
| Net volume per pen | 5 mL |
| Pens per case | 5 |
| Listed resistivity | 1.0 × 10-4 Ω·cm |
| Typical trace width | 1.5–2.0 mm |
| Listed drying time | 1 minute at room temperature |
| Preferred working surface | Smooth, flat, hard surface |
Pen vs. Liquid-Can Format
| Consideration | 842AR-P pen | 842AR liquid can |
|---|---|---|
| Application | Valve-tip dispensing for drawing traces | Brush or spray application |
| Typical selection | Localized circuit repair and prototyping | Coating larger areas, including enclosure shielding |
| Documentation | Use pen-specific TDS and SDS | Use liquid-specific TDS and SDS |
Frequently Asked Questions
Is 842AR-P discontinued?
The pen remains listed by MG Chemicals. Discontinuation of the 842AR-15ML and 842AR-150ML liquid sizes should not be applied to this pen.
How many pens are included?
This listing is a case of five pens, with 5 mL per pen.
How wide is the trace?
MG Chemicals lists a typical trace width of 1.5–2.0 mm. Actual results depend on application technique and the surface.
How is the lacquer dispensed?
The valve tip opens when pressed against a surface, and squeezing the barrel controls the flow. Follow the pen TDS for preparation and use.
What circuits can it repair?
Manufacturer examples include keyboards, game controllers, remote controls, mixing boards, and PCBs. Validate the completed repair for your circuit requirements.
Does one-minute drying mean the repair is fully cured?
No. 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.
Does resistivity equal the resistance of my finished trace?
No. Resistivity is a material property. Finished trace resistance also depends on length, width, thickness, and processing.
Can I use the liquid-can technical sheets for this pen?
Use 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.
