3 Conformal Coatings and How to Use Them

by Michelle S. on October 13, 2014

Chemically designed to protect circuit boards and other electronic components from the elements, conformal coatings adhere to irregular surfaces to ensure operation integrity. Available in multiple formulations, there are three primarily used types of conformal coatings. Which is right for your application?

Acrylic Conformal Coating (AR) – Designed for ease of application and good general protection, AR coatings offer high dielectric strength, moderate elasticity, abrasion resistance, and easy application and removal.  Ideal for: automotive, consumer electronics or industrial controls applications.

Silicone Conformal Coating (SR) – A more chemically resistant alternative to acrylic, SR coatings are generally considered top-of-the-line with excellent moisture protection, dielectric strength, flexibility, and resistance to thermal shock. Ideal for: applications including railway electronics, appliance controls, or LED signage.

Urethane Conformal Coating (UR) – Known for moisture, abrasion and chemical resistance, UR coatings are rigid and hard. Ideal for: aviation, aerospace and petrochemical applications.

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