According to the requirements and focus areas used by each region and manufacturer, there are various names for "conformal coating", such as "three proofing paint", "three proofing glue", "moisture-proof glue", "insulation glue", "moisture-proof paint", "protective paint", "protective paint", "coating glue", "waterproof glue", "moisture-proof oil", "three proofing agent", "protective agent", "moisture-proof agent", and "common coating". Conformal coating is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion, thereby improving and extending their service life, ensuring safety and reliability of use.
Under real-world conditions, such as chemistry, vibration, high dust, salt spray, humidity, and high temperature, circuit boards may experience problems such as corrosion, softening, deformation, and mold, leading to circuit board failures. Conformal coating is applied to the surface of the circuit board to form a protective film (The three protections refers to moisture resistance, salt spray resistance, and mold resistance). Under conditions such as chemical substances (such as fuel, coolant, etc.), vibration, moisture, salt spray, humidity, and high temperature, circuit boards that do not use the conformal coating may be corroded, mold grows, and short circuited, leading to circuit failures. The use of the 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, due to the ability of the conformal coating to prevent leakage, higher power and closer spacing between printed boards are allowed. This can meet the purpose of miniaturizing components.
