Conformal coating material is a thin polymeric film which ‘conforms’ to the contours of a printed circuit board to protect the board’s components. Typically applied at 25-250 μm (micrometers) it is applied to electronic circuitry to act as protection against moisture, dust, chemicals, and temperature extremes that, if uncoated (non-protected), could result in damage or failure of the electronics to function. When electronics must withstand harsh environments and added protection is necessary, most circuit board assembly houses coat assemblies with a layer of transparent conformal coating rather than potting.
This coating can be completed with a spray aerosol with spray gun and is suitable for low and medium volume processing..The quality of the surface finish can be superior to all other methods Spray applications can be one of the most cost effective ways of applying conformal coating. One of the key attributes of atomised spraying is giving excellent tip coverage to components