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.

...
Read more Read less

Filters

Viewing 1 - 20 of 26 products
Results per page
Description Price Package Size Package Type Application Material Colour Maximum Operating Temperature Minimum Operating Temperature Trade Name
RS Stock No. 714-462
BrandRS PRO
HK$122.88
Each
units
200 ml Aerosol PCBs Acrylic Resin Transparent +130°C -55°C -
RS Stock No. 101-6343
Mfr. Part No.DCA200H
HK$169.10
Each
units
200 ml Aerosol PCBs Silicone Resin Transparent +200°C -70°C DCA
RS Stock No. 831-141
BrandRS PRO
HK$124.44
Each
units
200 ml Aerosol PCBs Silicone Resin Red +200°C -70°C -
RS Stock No. 768-2312
Mfr. Part No.PUC400
HK$158.91
Each
units
400 ml Aerosol Electronics PUR Transparent Amber +130°C -55°C PUC
RS Stock No. 918-5043
Mfr. Part No.4223F-1L
HK$538.68
Each
units
1 L Tin Electrical, Electronic Components Urethane Transparent Amber +155°C -40°C 4223F
RS Stock No. 918-5030
Mfr. Part No.419D-1L
HK$536.06
Each
units
1 L Tin Aerospace, Automobile, Aviation, Communication, Consumer Electronics Industries, Electrical, Electronic Components, Industrial, Instrumentation, Marine Acrylic Clear +125°C -65°C 419D
RS Stock No. 918-5056
Mfr. Part No.4354-1L
HK$237.18
Each
units
1 L Tin Electronics Acrylic, Urethane Clear - - 4354 THINNER 4
RS Stock No. 918-5052
Mfr. Part No.4352-1L
HK$235.19
Each
units
1 L Tin Electronics Acrylic, Alkyd, Cellulose Acetate Butyrate, Epoxy, Nitrocellulose, Polyester Resin Clear - - 4352 THINNER 2
RS Stock No. 495-240
Mfr. Part No.CW3300G
HK$233.14
Each
units
4.9 g Pen PCBs Acrylic Green +125°C -55°C CW3300
RS Stock No. 918-5040
Mfr. Part No.435-1L
HK$261.54
Each
units
1 L Tin Conformal Coating, Spray For EMI/RFI Shielding - Clear - - 435 THINNER
RS Stock No. 918-9121
Mfr. Part No.WBP05L
HK$2,001.08
Each
units
5 L Bottle Dipping, Electronic Circuit, Spraying Water Based White +125°C -60°C WBP
RS Stock No. 918-5034
Mfr. Part No.422B-1L
HK$1,283.34
Each
units
1 L Tin PCBs Silicone Clear +200°C -40°C 422B
RS Stock No. 494-714
BrandRS PRO
HK$140.04
Each
units
200 ml Aerosol PCBs Silicone Resin Transparent +200°C -70°C -
RS Stock No. 784-4854
Mfr. Part No.CCRG01L
HK$786.54
Each
units
1 L Bottle PCBs Thixotropic Gel Transparent - - CCRG
RS Stock No. 192-2025
Mfr. Part No.CW3300White
HK$240.41
Each
units
4.9 g Pen Conformal Coating, Insulates and Protects Conductive Pen Traces, Prevents Shorting and Arcing, Repairs Permanent Solder Mask Acrylic White +125°C -55°C CircuitWorks
RS Stock No. 192-2021
Mfr. Part No.CW3300Black
HK$234.48
Each
units
4.9 g Pen Conformal Coating, Insulates and Protects Conductive Pen Traces, Prevents Shorting and Arcing, Repairs Permanent Solder Mask Acrylic Black +125°C -55°C CircuitWorks
RS Stock No. 918-5059
Mfr. Part No.4351-1L
HK$200.85
Each
units
1 L Tin Dilute EMI/RFI Shielding Coatings - Clear - - 4351 THINNER
RS Stock No. 192-7559
Mfr. Part No.419E-1L
HK$457.03
Each
units
945 ml Tin PCBs Acrylic Clear +130°C -65°C -
RS Stock No. 665-4836
Mfr. Part No.CW3300B
BrandChemtonics
HK$195.22
Each
units
4.9 g Pen Electronics, PCBs Acrylic Resin Blue +125°C -55°C CW3300
RS Stock No. 192-7558
Mfr. Part No.419E-340G
HK$292.70
Each
units
420 ml Aerosol PCBs Acrylic Clear +130°C -65°C -