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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Description Price Package Size Package Type Application Material Colour Dielectric Strength Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 118-1554
Mfr. Part No.CPL200H
200 ml Aerosol PCBs - Colourless 45kV/mm +100°C -50°C
RS Stock No. 165-5583
Mfr. Part No.ERURC200D
200 ml Aerosol Electrical Circuit Protection Urethane - 80kV/mm +140°C -40°C
RS Stock No. 165-5581
Mfr. Part No.ERAFAG35SL
35 ml Syringe Electrical Circuit Protection Acrylic - 45kV/mm +125°C -65°C