Electronics Varnishes & Lacquers

Electronics varnishes and lacquers are coating materials applied to PCBs (printed circuit boards) to protect the board and its components from corrosion and the external environment.

Chemicals, dust, temperature extremes and moisture can damage electronic components, so protection is required to ensure efficient functioning is maintained. In addition to protecting electronics from failure or damage, varnishes and lacquers also help electronics to withstand harsh environments.

How do electronics varnishes and lacquers work?

Electronics varnishes and lacquers protect electronic boards from environmental contaminates while also allowing any trapped moisture to escape.

They are typically applied onto a PCB by painting or spraying. By covering and protecting the leads of electronic components, solder joints, exposed traces and other metallic areas from corrosion, these coating materials extend the working life of PCBs.

What are electronics varnishes and lacquers used for?

Electronics varnishes and lacquers provide the necessary combination of reliability and high performance within a vast majority of electronic devices in applications such as:

  • Military and industrial settings
  • The aerospace industry
  • Green energy
  • Shipping
  • Lighting
  • Domestic and mobile electronics
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Part Details Brand Package Size Package Type Application Material Colour Dielectric Strength Maximum Operating Temperature Minimum Operating Temperature
CRC Aerosol Protective Varnish CRC 400 ml Aerosol - - - <gteq/>80kV/mm - -
Clear RS PRO Acrylic Aerosol PCB Coating Electrical Circuit Protection RS Pro 400 ml Aerosol Electrical Circuit Protection Acrylic Clear 45kV/mm +150°C -12°C
RS Pro quick-drying lacquer clear 400ml RS Pro 400 ml Aerosol - - Clear 42.6kV/mm +120°C -40°C
Clear RS PRO Can PCB Coating Components, PCBs, Transformers RS Pro 250 ml Can Components, PCBs, Transformers - Clear 60kV/mm +120°C -55°C
RS PRO Polymer Aerosol PCB Coating Mechanical Parts RS Pro 400 ml Aerosol Mechanical Parts Polymer - 48kV/mm +125°C -55°C
Colourless Electrolube Aerosol PCB Lacquer Electrolube 200 ml Aerosol PCBs - Colourless 45kV/mm +100°C -50°C
Red Ambersil Aerosol Electrical Spray Electrical Assemblies, Electrical Switchgear and Circuitry, Motor Manufacturing, Ambersil 400 ml Aerosol Electrical Assemblies, Electrical Switchgear and Circuitry, Motor Manufacturing, Motor Repair/Refurbishment, Transformers - Red - - -
Grey MG Chemicals Nickel Aerosol Conductive Paint Aerospace, Antennas, Audio Equipment, Cable Boxes, Cellphones, MG Chemicals 232 ml Aerosol Aerospace, Antennas, Audio Equipment, Cable Boxes, Cellphones, Communication Devices, Consumer Electronics, Controllers, Drones & Other RC Vehicles, Electric Quitars and other Amplified Instruments, Electric Vehicles, Electronic Sporting Equipment, Firewalls, GPS, Laptops, Medical Equipment, Military Equipment, Monitors and Displays, Navigation Systems, Networking Gear, PDA, Receivers, Satellite Dishes and Radar Systems, Scientific Equipment, Sensors, Test Equipment, TV Nickel Grey - +120°C -40°C
Clear CRC Acrylic Resin Aerosol Conformal Coating CRC 400 ml Aerosol - Acrylic Resin Clear >80kV/mm +60°C -40°C
Clear CRC Acrylic Resin Aerosol Conformal Coating Various Applications CRC 200 ml Aerosol Insulation Coils and Transformers, Protect Printed Circuit Boards, Protective Coating on Metal, Paper, Ornaments, Paintings, Furniture, etc Acrylic Resin Clear >80kV/mm +60°C -40°C
Black MG Chemicals Acrylic Aerosol Conductive Lacquer Electric Guitars, Electronic Instruments, Metal Detectors, MG Chemicals 360 ml Aerosol Electric Guitars, Electronic Instruments, Metal Detectors, Picture Tubes, RFI Shielding Acrylic Black - +120°C -40°C
Grey MG Chemicals Nickel Pen Conductive Paint Aerospace, Antennas, Audio Equipment, Cable Boxes, Cellphones, MG Chemicals 5 ml Pen Aerospace, Antennas, Audio Equipment, Cable Boxes, Cellphones, Communication Devices, Consumer Electronics, Controllers, Drones & Other RC Vehicles, Electric Quitars and other Amplified Instruments, Electric Vehicles, Electronic Sporting Equipment, Firewalls, GPS, Laptops, Medical Equipment, Military Equipment, Monitors and Displays, Navigation Systems, Networking Gear, PDA, Receivers, Satellite Dishes and Radar Systems, Scientific Equipment, Sensors, Test Equipment, TV Nickel Grey - +120°C -40°C
Red CRC Urethane Aerosol Conformal Coating Armature Coils, Boxes, Bus Bars, Commutator Ends, Controls, Electric Motor CRC 250 ml Aerosol Armature Coils, Boxes, Bus Bars, Commutator Ends, Controls, Electric Motor Windings, Housings, Solenoids, Terminals, Tools, Transformer Connectors Urethane Red 40kV/mm +120°C -40°C
Electrolube Urethane Aerosol Conformal Coating Electrical Circuit Protection Electrolube 200 ml Aerosol Electrical Circuit Protection Urethane - 80kV/mm +140°C -40°C
Grey-Silver MG Chemicals Acrylic Pen Conductive Paint Game Controllers, Keyboards, Mixing Boards, PCBs, Remote Controls MG Chemicals 5 ml Pen Game Controllers, Keyboards, Mixing Boards, PCBs, Remote Controls Acrylic Grey-Silver - +120°C -40°C
Brown MG Chemicals Acrylic Aerosol Conductive Paint Aerospace, Antennas, Audio Equipment, Cable Boxes, Cellphones, MG Chemicals 284 ml Aerosol Aerospace, Antennas, Audio Equipment, Cable Boxes, Cellphones, Communication Devices, Consumer Electronics, Controllers, Drones & Other RC Vehicles, Electric Quitars and other Amplified Instruments, Electric Vehicles, Electronic Sporting Equipment, Firewalls, GPS, Laptops, Medical Equipment, Military Equipment, Monitors and Displays, Navigation Systems, Networking Gear, PDA, Receivers, Satellite Dishes and Radar Systems, Scientific Equipment, Sensors, Test Equipment, TV Acrylic Brown - +120°C -40°C
Electrolube Acrylic Syringe Conformal Coating Electrical Circuit Protection Electrolube 35 ml Syringe Electrical Circuit Protection Acrylic - 45kV/mm +125°C -65°C
Transparent CRC Urethan 71 Aerosol PCB Coating CRC 200 ml Aerosol PCBs Urethan 71 Transparent >40kV/mm +120°C -40°C
Black CRC Graphite Aerosol Conductive Lacquer CRC 200 ml Aerosol PCBs Graphite Black - +300°C +250°C
Transparent CRC Acrylic Resin Aerosol Conformal Coating Aeronautics, Aerospace, Automotive Electricity, Electronic CRC 400 ml Aerosol Aeronautics, Aerospace, Automotive Electricity, Electronic Materials, Marine, Telecommunications Acrylic Resin Transparent >85kV/mm +125°C -40°C
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