Conformal coating is the application of a thin protective substance onto the surface of a printed circuit board (PCBA). It adapts to the topography of the PCBA and ensures insulation, resistance to chemicals and entry of contaminants. In industries demanding high reliability, such as military, automotive, aerospace, and medical sectors, this procedure is deemed essential.
Conformal coating improves the durability and longevity of circuitry on printed circuit board assemblies (PCBAs) when subjected to challenging environmental conditions. Key advantages include:
The choice of materials is contingent upon specific requirements like temperature resistance, flexibility, thickness, dielectric properties, etc. Standard coating thickness is 25-75μm. Certain formulations of urethanes and silicones, specifically designed for applying thick coatings, have the capability to be applied in layers measuring several millimeters in thickness.
We can also offer different application methods such as manual brushing, dipping, conformal coating spray, selective coating spray, auto-jet spray and vapor deposition.
We always verify the coating quality and coverage. Typical inspection methods include visual inspection, coating thickness measurement, cross-section analysis and microsectioning.
