The important applications of conformal coating in the electronics industry
Conformal coating is widely used in the electronics industry. Different regions and manufacturers may give it different names based on its application requirements and characteristics, such as: circuit board protection glue, coating glue, moisture-proof oil, conformal coating, insulating glue, three-proof oil, common coating, etc.
After application, conformal coating forms a thin film that acts as a protective layer for electronic circuits and components. It can enhance the moisture and dirt resistance of electronic circuits and components, prevent solder joints and conductors from corrosion, shield and eliminate electromagnetic interference, prevent short circuits in the circuit, and improve the insulation performance of the circuit board.
In environments such as chemical exposure, vibration, salt spray, humidity, and high temperatures, circuit boards are likely to suffer from corrosion, softening, deformation, mildew, and other issues, leading to circuit failures. At this point, applying conformal coating to the surface of the circuit board forms a three-proof protective film. It can effectively isolate the circuit board and protect the circuit from erosion and damage in harsh environments, thereby improving the reliability of the circuit board, increasing its safety factor, and ensuring its service life. What are the characteristics of conformal coating? ① It has good fluidity and can flow well, making it easy to use; ② After curing, the coating forms a soft (or moderately hard) and transparent (or colored) elastic-plastic film, which is non-corrosive to materials; ③ It has excellent weathering resistance and high and low temperature resistance, with little change in performance within the range of -50℃ to +200℃; ④ It has high adhesion to materials, along with excellent insulation and flame retardancy; ⑤ Some coating materials (those with softer hardness) have good stress-relief capabilities. Since conformal coating plays such a significant role in protecting electronic components, it is undoubtedly crucial to choose regular and reliable manufacturers and brands, ensuring greater peace of mind during use.
