Why use Conformal Coating to protect my electronic circuit board?

Conformal coating is a protective non conductive dielectric layer that is applied onto the printed circuit board assembly to protect the electronic assembly from damage due to contamination, salt spray, moisture, fungus, dust and corrosion caused by harsh or extreme environments.

It is usually used on electronic products that are exposed to adverse environments where heat, chemicals and / or moisture are prevalent. Coating also can prevent damage from rough handling, installation, reduction of mechanical and thermal stress. It can prolong the life of the product during its operation and at the same time, it can help to increase the dielectric strength between conductors enabling the design of the PCB to be more compact and small. Finally, it also acts to protect circuitry and components from abrasion and solvents.

Coated PCB

In the past, coatings were only applied to military and safety critical products like medical devices as the cost and the process of doing this was high. In recent years, the development in material and new processes has enabled consumer electronics products to be coated as well. This will be becoming more common and will become a norm as circuitry and electronic components continue to shrink in size and dimension.

If you would like to know more about the fundamentals of Conformal Coating or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us on +44 1226 249019, email us at sales@schservices.com, click Why use Conformal Coating? or click Contact Us to send us your requests.


About Dr Lee Hitchens

Dr Hitchens has been working in the electronics industry and the area of conformal coatings for over 25 years in various areas including sales and technical support. He has also been training people for almost the same amount of time in all areas of conformal coating whether that is materials & equipment selection, process development or troubleshooting to help them solve their particular problem. Recently, he decided that the industry needed a specific place where all of the useful knowledge on conformal coatings could be collated for users to find easily and use in their own production process. So, Nexus was born and he began the Nexus eBook project.

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