Conformal Coatings

A conformal coating is a thin, protective coating for PCBs and other electronic components providing insulation and protection from external and environmental conditions. Available in a variety of formulas, the most common conformal coatings are made from acrylic, epoxy, silicone or urethane. The coating can be removed easily with most common solvents, or specialist solvents can be used to remove and rework a conformal coating. At RS Components, our range features products from industry-leading brands such as Ambersil, Chemtronics, Electrolube, MG Chemicals and RS PRO.

Why use a conformal coating?

A conformal coating provides protection from external conditions and contaminants, such as moisture, sea salt, chemicals and extreme temperatures. This protection extends the working life of the PCB, as well as allowing for higher voltages and closer track spacing on the PCB.

Conformal coatings are used in many types of applications where high performance and reliability are needed. These include military, automotive, marine and green energy to domestic and mobile electronic industries.

How are conformal coatings applied?

Conforming coatings are applied in low volume applications by brushing the components with the coating material. For low to medium volume applications, the coating can be sprayed onto the PCB using an aerosol or dedicated spray booth, providing excellent tip coverage to the components. High volume applications often use a dipping method. Masking is an important part of this coating process and must be applied perfectly to protect the PCB circuit board when using this coating process. A component can be reworked after a conformal coating is applied.

When using a conformal coating, the viscosity and thickness of the coating is highly important as it can affect PCB performance. Viscosity of the conformal coating must be monitored as part of the process.

What are the different types of conformal coating?

  • Silicone coatings give great protection in a range of temperatures, good chemical resistance, flexibility and resistant to sea salt.
  • Acrylic coatings, easy to use and remove, provide fair elasticity, abrasion resistant and have high dielectric strength.
  • Polyurethane/urethane coatings have excellent moisture and chemical resistance and are abrasion-resistant.
  • Epoxy coatings give good humidity resistance, high abrasion and chemical resistance.

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Description Price Package Size Package Type Application Material Colour Maximum Operating Temperature Minimum Operating Temperature Trade Name
RS庫存編號 714-462
BrandRS PRO
HK$120.85
單位
200 ml Aerosol PCBs Acrylic Resin Transparent +130°C -55°C -
RS庫存編號 101-6343
製造零件編號DCA200H
HK$151.28
單位
200 ml Aerosol PCBs Silicone Resin Transparent +200°C -70°C DCA
RS庫存編號 831-141
BrandRS PRO
HK$124.44
單位
200 ml Aerosol PCBs Silicone Resin Red +200°C -70°C -
RS庫存編號 768-2312
製造零件編號PUC400
HK$158.48
單位
400 ml Aerosol Electronics PUR Transparent Amber +130°C -55°C PUC
RS庫存編號 918-5043
製造零件編號4223F-1L
HK$522.99
單位
1 L Tin Electrical, Electronic Components Urethane Transparent Amber +155°C -40°C 4223F
RS庫存編號 918-5030
製造零件編號419D-1L
HK$536.06
單位
1 L Tin Aerospace, Automobile, Aviation, Communication, Consumer Electronics Industries, Electrical, Electronic Components, Industrial, Instrumentation, Marine Acrylic Clear +125°C -65°C 419D
RS庫存編號 918-5052
製造零件編號4352-1L
HK$235.19
單位
1 L Tin Electronics Acrylic, Alkyd, Cellulose Acetate Butyrate, Epoxy, Nitrocellulose, Polyester Resin Clear - - 4352 THINNER 2
RS庫存編號 918-5056
製造零件編號4354-1L
HK$233.26
單位
1 L Tin Electronics Acrylic, Urethane Clear - - 4354 THINNER 4
RS庫存編號 918-5034
製造零件編號422B-1L
HK$1,073.01
單位
1 L Tin PCBs Silicone Clear +200°C -40°C 422B
RS庫存編號 918-9121
製造零件編號WBP05L
HK$2,001.08
單位
5 L Bottle Dipping, Electronic Circuit, Spraying Water Based White +125°C -60°C WBP
RS庫存編號 918-5040
製造零件編號435-1L
HK$235.19
單位
1 L Tin Conformal Coating, Spray For EMI/RFI Shielding - Clear - - 435 THINNER
RS庫存編號 495-240
製造零件編號CW3300G
HK$233.14
單位
4.9 g Pen PCBs Acrylic Green +125°C -55°C CW3300
RS庫存編號 918-5059
製造零件編號4351-1L
HK$200.85
單位
1 L Tin Dilute EMI/RFI Shielding Coatings - Clear - - 4351 THINNER
RS庫存編號 192-7559
製造零件編號419E-1L
HK$457.03
單位
945 ml Tin PCBs Acrylic Clear +130°C -65°C -
RS庫存編號 665-4836
製造零件編號CW3300B
BrandChemtonics
HK$195.22
單位
4.9 g Pen Electronics, PCBs Acrylic Resin Blue +125°C -55°C CW3300
RS庫存編號 494-714
BrandRS PRO
HK$136.18
單位
200 ml Aerosol PCBs Silicone Resin Transparent +200°C -70°C -
RS庫存編號 321-7324
製造零件編號APL15ML
HK$44.93
單位
15 ml Bottle PCBs Acrylic Resin Transparent +125°C -55°C APL
RS庫存編號 192-7558
製造零件編號419E-340G
HK$271.13
單位
420 ml Aerosol PCBs Acrylic Clear +130°C -65°C -
RS庫存編號 784-4854
製造零件編號CCRG01L
HK$758.73
單位
1 L Bottle PCBs Thixotropic Gel Transparent - - CCRG
RS庫存編號 186-0602
製造零件編號CTSR-12E
HK$221.52
單位
400 ml Aerosol Aerospace, Data Communications, Instrumentation Silicone Straw +200°C -65°C Konform