According to the circuit board factory, conformal paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion. The three-proof paint has good high and low temperature resistance; after curing, it forms a transparent protective film, which has excellent insulation, moisture-proof, anti-leakage, shock-proof, dust-proof, anti-corrosion, anti-aging, corona resistance and other properties.

Under realistic conditions, such as chemical, vibration, high dust, salt spray, humidity and high temperature environments, circuit boards may suffer from corrosion, softening, deformation, mildew and other problems, resulting in circuit board circuit failures.

The three-proof paint is coated on the surface of the circuit board to form a layer of three-proof protective film (three-proof refers to moisture-proof, salt-fog-proof and mildew-proof).

Circuit boards without conformal paint may corrode, mold growth, and create short circuits under conditions such as chemical substances (eg: fuel, coolant, etc.), vibration, moisture, salt spray, humidity, and high temperature, resulting in circuit boards In case of failure, the use of conformal paint 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, higher power and closer printed board spacing are allowed because conformal paint prevents electrical leakage. Therefore, the purpose of miniaturization of components can be satisfied.