The conformal coating is a special formula of paint, used to protect circuit boards and related equipment from environmental erosion. The three-proof paint has good resistance to high and low temperature; it forms a transparent protective film after curing, which has excellent insulation, moisture resistance, leakage resistance, shock resistance, dust resistance, corrosion resistance, aging resistance, corona resistance and other properties.
Under real conditions, such as chemical, vibration, high dust, salt spray, humidity and high temperature, the circuit board may have corrosion, softening, deformation, mildew and other problems, which may cause the circuit board to malfunction. The conformal coating is sparyed on the surface of the circuit board to form a layer of three-proof protective film (three-proof refers to the anti-moisture, anti-salt spray and anti-mildew). Under conditions such as chemical substances (such as fuel, coolant, etc.), vibration, humidity, salt spray, humidity and high temperature, the circuit board that is not used with the conformal coating may be corroded, mold growth and short circuit, etc., causing the circuit In the event of failure, the use of conformal coating can protect the circuit from damage, thereby improving the reliability of the circuit board, increasing its safety factor, and ensuring its service life. In addition, because the conformal coating can prevent leakage, it allows higher power and closer printed board spacing. So as to meet the purpose of miniaturization of components.
