PCBA conformal coating process steps

Written By:Syspcb Updated: 2025-3-22

There are many PCBA conformal coating application, especially in some environments with harsh temperature and humidity. PCBA with conformal coating paint has excellent insulation, moisture-proof, anti-leakage, anti-vibration, dust-proof, anti-corrosion, anti-aging, and anti-mildew, anti-part loosening, insulation and corona resistance performance, can extend the storage time of PCBA, isolate external corrosion, pollution, etc.  

Chinese PCB factory
Chinese PCB factory

automatic conformal coating for PCBA 

Conformal coating can be use brush or spray to coating PCB surface.  

PCBA conformal coating process steps are: brushing/ Spraying side A → surface drying → brushing/ Spraying side B → curing at room temperature

Spraying thickness: 0.1mm—0.3mm

All coating operations should be carried out under the conditions of not lower than 16℃ and relative humidity lower than 75%.  

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