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Instead of using balloons, bags or sealed boxes you may also use what is called conformal coating. This is sold in most electronic stores in small bottles or spray cans. While there are different types; silicone, epoxy, acrylic, urethane and Paraxylene, the one to use is Silicon as it is flexible and will not affect the frequency of the device or hurt the electronics in any way. Best of all it's removable if needed.
What is is? It is a liquid that may be applied to any circuit board with a spray or brush that which makes a protective non conductive dielectric layer . This will protect the electronic assembly from damage due to contamination, salt spray, static discharge, arching, moisture, fungus, dust, corrosion, and protect from current leakage, resulting in board failure. When coated, it is clearly visible as a clear and shiny material and it has a slightly rubbery texture.
Silicone coatings range from elastoplastic which is a tough, abrasion-resistant to soft, elastomeric materials. Silicones are typically used in high temperature environments. It has good moisture and humidity resistance and good thermal shock resistance due to its flexibility so it's also easy to apply and repair. Its moisture resistance is similar to urethane and acrylic and Dielectric. Its typical temperature range is -65C to 200C. They perform at higher temperatures than other types of coatings and have remarkable electrical insulation properties making them ideal for high power and highly populated boards.
Methods of Application
Conformal coatings may only fully protect the assembly if the board is thoroughly cleaned prior to application. This ensures that the coating will adhere to the surface and that corrosive residues are not trapped on the PCB. These are the main application methods;
Brushing is a popular application technique and can give excellent results on even surfaces.
Spraying with aerosols is convenient for repair or small production runs, and spray guns are suitable for larger production. However, both methods can give "shadowing" (voids under components) and the effectiveness can depend on operator accuracy.
Dipping ensures complete coverage and there is no over spray or material wastage.
At room temperature, the product will be tack free in approximately 30 minutes, and full cure will be achieved in approximately 48 hours. Curing may be accelerated by applying moderate heat like hair dryer.
What is is? It is a liquid that may be applied to any circuit board with a spray or brush that which makes a protective non conductive dielectric layer . This will protect the electronic assembly from damage due to contamination, salt spray, static discharge, arching, moisture, fungus, dust, corrosion, and protect from current leakage, resulting in board failure. When coated, it is clearly visible as a clear and shiny material and it has a slightly rubbery texture.
Silicone coatings range from elastoplastic which is a tough, abrasion-resistant to soft, elastomeric materials. Silicones are typically used in high temperature environments. It has good moisture and humidity resistance and good thermal shock resistance due to its flexibility so it's also easy to apply and repair. Its moisture resistance is similar to urethane and acrylic and Dielectric. Its typical temperature range is -65C to 200C. They perform at higher temperatures than other types of coatings and have remarkable electrical insulation properties making them ideal for high power and highly populated boards.
Methods of Application
Conformal coatings may only fully protect the assembly if the board is thoroughly cleaned prior to application. This ensures that the coating will adhere to the surface and that corrosive residues are not trapped on the PCB. These are the main application methods;
Brushing is a popular application technique and can give excellent results on even surfaces.
Spraying with aerosols is convenient for repair or small production runs, and spray guns are suitable for larger production. However, both methods can give "shadowing" (voids under components) and the effectiveness can depend on operator accuracy.
Dipping ensures complete coverage and there is no over spray or material wastage.
At room temperature, the product will be tack free in approximately 30 minutes, and full cure will be achieved in approximately 48 hours. Curing may be accelerated by applying moderate heat like hair dryer.