Chemtronics CW3300BLACK, CircuitWorks Overcoat Pens, Black, 0.16oz Pen
Chemtronics CW3300BLACK CircuitWorks Overcoat Pen — Black, 4.9g
The Chemtronics CW3300BLACK CircuitWorks Overcoat Pen applies a hard, durable black acrylic conformal coating directly to circuit board traces, components, solder mask repairs, and other electronic assemblies requiring insulation and environmental protection. The single-component pen format provides precise, spot application without the overspray of aerosol conformal coatings — ideal for touch-up, rework, and prototype board protection. The acrylic formulation meets MIL-I-46058C and IPC-CC-830A conformal coating standards, providing high dielectric strength to prevent electrical discharge, moisture resistance, and protection against abrasion and fungal growth. Dries quickly at room temperature. The black color makes coated areas clearly visible for inspection and quality control.
Black | 4.9g (0.16 oz.) pen | MIL-I-46058C & IPC-CC-830A rated
Industries & Applications
- PCB Rework & Repair — Spot application of conformal coating over reworked areas, replaced components, and hand-soldered repairs where original coating was removed
- Solder Mask Repair — Repairing damaged or missing permanent solder mask on prototype and production boards to restore insulation and environmental protection
- Electronics Manufacturing (EMS / OEM) — Touch-up coating on boards post-assembly where selective areas require additional protection against moisture, abrasion, or fungus
- Aerospace & Defense Electronics — MIL-I-46058C compliant coating for boards in controlled environments requiring documented conformal coating standards
- Prototype & R&D Labs — Fast, convenient board protection during development iterations without committing to full aerosol coating processes
- Field Service & Depot Repair — Portable pen format for in-field PCB repairs requiring trace insulation and short prevention
Key Features
- Black acrylic conformal coating — coated areas clearly visible for inspection
- Meets MIL-I-46058C and IPC-CC-830A conformal coating standards
- High dielectric strength — prevents electrical discharge between traces
- Protects against moisture, abrasion, fungus, and environmental hazards
- Hard, durable coating — single component, no mixing required
- Dries quickly at room temperature
- Precision pen tip — spot application with no overspray waste
- Repairs permanent solder mask on prototype and production boards
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | CW3300BLACK |
| Manufacturer | Chemtronics / CircuitWorks |
| Color | Black |
| Coating Type | Acrylic conformal coating |
| Net Weight | 4.9g (0.16 oz.) |
| Format | Pen applicator |
| Cure Method | Air dry at room temperature |
| Standards | MIL-I-46058C, IPC-CC-830A |
| Components | Single component (no mixing) |
| SKU | CW3300BLACK |
CircuitWorks Overcoat Pen Color Options
| Product | Color | Best For |
|---|---|---|
| CW3300BLACK | Black | Clear inspection visibility of coated areas; standard PCB rework |
| CW3300C | Clear | Invisible coating where aesthetics matter or color coding not required |
| CW3300G | Green | Color-matched to standard green solder mask for seamless solder mask repair |
Frequently Asked Questions
What standards does the CW3300BLACK meet?
The CW3300BLACK meets MIL-I-46058C (military conformal coating specification) and IPC-CC-830A (qualification and performance of electrical insulating compounds for printed circuit boards). These are the primary industry standards for conformal coating qualification in electronics manufacturing.
Why choose black over clear conformal coating?
The black color makes it immediately visible where coating has been applied — useful for inspection, quality control, and ensuring complete coverage on reworked areas. Choose clear (CW3300C) when coating visibility is not required or where aesthetics demand an invisible finish.
Can the CW3300BLACK be used to repair solder mask?
Yes — the CW3300BLACK is specifically designed for repairing permanent solder mask on prototype and production circuit boards. It provides insulation and protection equivalent to solder mask in reworked or damaged areas. For a color-matched green repair, use the CW3300G instead.
How long does the CW3300BLACK take to dry?
The CW3300BLACK dries quickly at room temperature. Allow sufficient cure time before powering the board or applying additional assembly steps. Refer to the Technical Data Sheet for specific cure time data.
Is the CW3300BLACK suitable for aerospace applications?
Yes — MIL-I-46058C qualification makes the CW3300BLACK suitable for use in aerospace and defense electronics programs requiring documented conformal coating compliance. Verify your specific program requirements with your quality team before use.
