Conformal Coatings

Conformal coating is a protective coating of thin polymeric film applied to printed circuit boards (PCB). The coating is named conformal since it conforms to the contours of the PCB. Conformal coatings are usually about 25-250 μm thickness to the electronic circuitry and provides protection against moisture, dust, chemicals and temperature extremities… Most circuit board assembly firms coat assemblies with a layer of transparent conformal coating, which is lighter and easier to inspect than potting.

Conformal coating methods may be including brushing, spraying, dispensing and dip coating. Conformal coating materials be usually used such as acrylics, silicones, urethanes and parylene.