Conformal Coating
Reliable Conformal Coating Services For PCBA
Protect Your PCBA From Moisture, Dust & Harsh Environments
Our conformal coating service provides a protective layer over assembled PCBs to improve resistance against moisture, dust, chemicals, corrosion, and other environmental factors.
From coating preparation and selective masking to application, curing, and final inspection, we provide conformal coating as part of a complete PCBA manufacturing solution.
Protect Your PCB Assemblies With Conformal Coating
Electronic assemblies may be exposed to moisture, condensation, dust, chemicals, salt spray, temperature changes, and other environmental conditions during operation.
Conformal coating creates a thin protective layer over selected areas of the PCB assembly, helping protect components and circuitry while maintaining the required electrical and mechanical performance.
We provide conformal coating services according to your PCB design, operating environment, coating material, coverage requirements, and production specifications.
The coating process can be integrated with our PCBA assembly and testing services to provide a streamlined manufacturing solution.
Why Use Conformal Coating?
Moisture Protection
Helps protect PCB assemblies from humidity, condensation, and moisture-related damage.
Corrosion Resistance
Provides an additional protective barrier against environmental contaminants that may contribute to corrosion.
Dust & Contaminant Protection
Helps reduce the impact of dust, dirt, and other airborne contaminants on exposed circuitry.
Improved Reliability
Conformal coating can improve PCB assembly reliability when products operate in demanding environments.
Chemical Resistance
Depending on the selected coating material, the coating can provide protection against certain chemicals and contaminants.
Environmental Protection
Suitable for electronic assemblies that need additional protection against challenging operating conditions.
Our Conformal Coating Process
PCBA Inspection
We review the assembled PCB and confirm the coating requirements before processing.
Conformal Coating Options
The appropriate coating material depends on the product design, operating environment, temperature range, chemical exposure, flexibility requirements, and other project specifications.
Acrylic Coating
Acrylic coatings provide general-purpose protection and are commonly used where moisture and environmental protection are required.
Silicone Coating
Silicone coatings offer good flexibility and are suitable for applications exposed to temperature variation and vibration.
Polyurethane Coating
Polyurethane coatings can provide strong protection against moisture, chemicals, and environmental exposure.
Epoxy Coating
Epoxy coatings provide a harder protective layer and can be considered for applications requiring strong mechanical and environmental protection.
Note: Material selection should be based on the actual application requirements and customer specifications.
Selective Conformal Coating For PCBA
Not every area of a PCB assembly should necessarily be coated.
Certain areas may need to remain uncoated, including:
✓ Connectors
✓ Test points
✓ Switches
✓ Relays
✓ Heat sinks
✓ Mechanical contact areas
✓ Mounting surfaces
✓ Specific components or terminals
We can follow customer-defined coating areas and masking requirements to help ensure that critical connection and testing points remain accessible.
Quality Control For Conformal Coating
Consistent coating quality is important for long-term PCBA reliability.
Our coating quality control can include:
✓ Pre-coating PCBA inspection
✓ Surface preparation
✓ Masking verification
✓ Coating coverage inspection
✓ Coating thickness control
✓ Curing process control
✓ Visual inspection
✓ Defect inspection
✓ Electrical testing when required
✓ Final inspection
The inspection and testing method can be adjusted according to the coating material, PCB design, and customer specifications.
What Do We Need For Your Coating Project?
To evaluate your conformal coating requirements, please provide:
✓ Gerber Files
✓ BOM
✓ Assembly Drawings
✓ Coating Area Requirements
✓ Coating Material Requirements
✓ Coating Thickness Requirements
✓ Operating Environment
✓ Temperature Requirements
✓ Testing Requirements
✓ Production Quantity
If you already have a coating specification or drawing, you can send it together with your PCB assembly files.
FAQS
Conformal coating is a thin protective layer applied to selected areas of a PCB assembly to help protect electronic circuitry from environmental conditions such as moisture, dust, and contaminants.
It is commonly considered for electronic assemblies exposed to moisture, humidity, dust, chemicals, temperature changes, vibration, or other demanding environmental conditions.
Yes. Coating and masking requirements can be defined according to the PCB design and customer specifications.
Yes. Conformal coating can be integrated into the PCBA manufacturing process after assembly and required inspection or testing.
We can review your application requirements and discuss suitable coating options. Final material selection should follow the product specifications and required environmental performance.