Acrylic Conformal Coating
CAS Number: 9003-01-4
Acrylic conformal coating is a transparent protective polymer coating applied to PCBs to shield electronic assemblies from moisture, dust, chemicals, and temperature extremes. Based on acrylic resin chemistry, it offers excellent clarity, easy reworkability with common solvents, and rapid air-dry or UV cure. It is the most widely used conformal coating type in consumer and industrial electronics.
Technical Specifications
| viscosity | 20–150 cP |
| appearance | Clear, colorless to slight yellow liquid |
| solidsContent | 20–35 wt% |
| dryFilmThickness | 25–75 µm (typical) |
| dielectricStrength | >40 kV/mm |
| operatingTemperature | -40°C to +120°C |
Applications
- Consumer electronics PCB protection
- Industrial control board coating
- Automotive interior electronics
- Telecommunications equipment
- LED driver board protection
Key Features
- Easy rework and repair using standard solvents
- UV fluorescence for inspection under UV lamp
- Fast air-dry or UV cure for high-throughput lines
- Excellent moisture and humidity resistance