1. Circuit board conformal coating is a thin polymer film applied to printed circuit boards (PCBs) to shield them and their components from environmental factors and corrosion.
2. Typically applied in a thickness range of 25-250 µm, this film conforms to the shape of the circuit board and its components.
3. It covers and protects solder joints, electronic component leads, exposed markings, and other metalized areas from corrosion, ultimately extending the lifespan of the PCBs.
Here is the revised version of your article:
Due to external factors in its working environment, performance may rapidly deteriorate. Circuit board conformal coating can be used in various environments to protect printed circuit boards from moisture, salt spray, chemicals, and extreme temperatures, preventing corrosion, mold growth, and electrical failures. The protection provided by conformal coatings enables higher voltage gradients and smaller rail spacing, allowing designers to meet the demands of miniaturization and reliability.
What are the types of circuit board conformal coating? Circuit board conformal coating, also known as PCB electronic circuit board protective oil, coating oil, moisture-proof paint, waterproof glue, insulation paint, anti-corrosion paint, salt spray paint, dust-proof paint, protective paint, coating paint, etc.
Its classification is as follows: Conformal coating can be divided into acrylic ester, silicone, and polyurethane based on their chemical composition. In terms of curing methods, there are solvent curing, room temperature curing, thermal curing, and UV curing.
1. Solvent-containing acrylic resin conformal coating (currently the most widely used and popular product in the market) Features: It has a dry surface, fast curing time, good three-proofing, low price, transparent color, flexible texture, and easy repair.
2. Solvent-free acrylic resin conformal coating Features: UV curing, can dry in a few seconds to tens of seconds, transparent color, hard texture, and excellent resistance to chemical corrosion and wear.
3. Polyurethane conformal coating Features: The texture is relatively brittle and has excellent solvent resistance. In addition to superior moisture resistance, it also maintains stable performance in low-temperature environments.
4. Organic silicon conformal coating The soft, elastic coating material can effectively release pressure, withstand high temperatures of 200 degrees, and is easy to repair.
5. Fluorescent conformal coating Features: After coating with fluorescent three-proof paint, the surface of the coating illuminated by a purple light shows blue, making it clear and easy to detect whether the three-proof paint has been applied properly.
Reasons for using conformal coating on circuit boards 1. Protect the circuit board Conformal coating provides good insulation and moisture resistance, effectively protecting circuit boards from environmental factors such as humidity, pollutants, and oxidation, thereby extending their service life.
2. Flame retardant performance Conformal coating typically has good flame retardant properties, reducing the risk of fire in unexpected situations and improving circuit board safety.
3. Antioxidant performance Conformal coating blocks oxygen from contacting the circuit board, reducing performance degradation from oxidation and enhancing stability and reliability.
4. Enhance mechanical strength The conformal coating adds hardness, which enhances the mechanical strength of the circuit board and reduces damage from external collisions, vibrations, etc.
5. Dust resistance: The surface of the circuit board is prone to dust and impurities that can affect its operation. Conformal coating forms a smooth protective film to prevent dust and impurities, maintaining circuit board cleanliness.
Conformal coating is a specialized formula used to protect circuit boards and related equipment from environmental erosion. It resists high and low temperatures; upon solidification, it forms a transparent protective film with superior insulation, moisture resistance, leakage resistance, shock resistance, dust prevention, corrosion resistance, aging resistance, and corona resistance.
2. Typically applied in a thickness range of 25-250 µm, this film conforms to the shape of the circuit board and its components.
3. It covers and protects solder joints, electronic component leads, exposed markings, and other metalized areas from corrosion, ultimately extending the lifespan of the PCBs.
Here is the revised version of your article:
Due to external factors in its working environment, performance may rapidly deteriorate. Circuit board conformal coating can be used in various environments to protect printed circuit boards from moisture, salt spray, chemicals, and extreme temperatures, preventing corrosion, mold growth, and electrical failures. The protection provided by conformal coatings enables higher voltage gradients and smaller rail spacing, allowing designers to meet the demands of miniaturization and reliability.
What are the types of circuit board conformal coating? Circuit board conformal coating, also known as PCB electronic circuit board protective oil, coating oil, moisture-proof paint, waterproof glue, insulation paint, anti-corrosion paint, salt spray paint, dust-proof paint, protective paint, coating paint, etc.
Its classification is as follows: Conformal coating can be divided into acrylic ester, silicone, and polyurethane based on their chemical composition. In terms of curing methods, there are solvent curing, room temperature curing, thermal curing, and UV curing.
1. Solvent-containing acrylic resin conformal coating (currently the most widely used and popular product in the market) Features: It has a dry surface, fast curing time, good three-proofing, low price, transparent color, flexible texture, and easy repair.
2. Solvent-free acrylic resin conformal coating Features: UV curing, can dry in a few seconds to tens of seconds, transparent color, hard texture, and excellent resistance to chemical corrosion and wear.
3. Polyurethane conformal coating Features: The texture is relatively brittle and has excellent solvent resistance. In addition to superior moisture resistance, it also maintains stable performance in low-temperature environments.
4. Organic silicon conformal coating The soft, elastic coating material can effectively release pressure, withstand high temperatures of 200 degrees, and is easy to repair.
5. Fluorescent conformal coating Features: After coating with fluorescent three-proof paint, the surface of the coating illuminated by a purple light shows blue, making it clear and easy to detect whether the three-proof paint has been applied properly.
Reasons for using conformal coating on circuit boards 1. Protect the circuit board Conformal coating provides good insulation and moisture resistance, effectively protecting circuit boards from environmental factors such as humidity, pollutants, and oxidation, thereby extending their service life.
2. Flame retardant performance Conformal coating typically has good flame retardant properties, reducing the risk of fire in unexpected situations and improving circuit board safety.
3. Antioxidant performance Conformal coating blocks oxygen from contacting the circuit board, reducing performance degradation from oxidation and enhancing stability and reliability.
4. Enhance mechanical strength The conformal coating adds hardness, which enhances the mechanical strength of the circuit board and reduces damage from external collisions, vibrations, etc.
5. Dust resistance: The surface of the circuit board is prone to dust and impurities that can affect its operation. Conformal coating forms a smooth protective film to prevent dust and impurities, maintaining circuit board cleanliness.
Conformal coating is a specialized formula used to protect circuit boards and related equipment from environmental erosion. It resists high and low temperatures; upon solidification, it forms a transparent protective film with superior insulation, moisture resistance, leakage resistance, shock resistance, dust prevention, corrosion resistance, aging resistance, and corona resistance.
