Conformal Coating & PCB Protection Resource Hub

Conformal Coating & PCB Protection Resource Hub

Conformal coatings protect printed circuit boards from moisture, dust, chemicals, and temperature extremes — extending product life and ensuring reliability in demanding environments. Selecting the right coating type, application method, and masking strategy is critical to achieving consistent, defect-free results. This hub compiles MTE Solutions' complete guidance on conformal coating selection, application, and PCB protection best practices. For soldering and rework resources, see our Soldering, Desoldering & Rework hub.

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Conformal Coating Types & Selection

Choosing the right coating chemistry for your application and environment:

  • Acrylic (AR) — easy rework, good moisture resistance, most common
  • Silicone (SR) — high-temperature performance, flexible
  • Urethane (UR) — excellent chemical and abrasion resistance
  • Epoxy (ER) — hardest, best chemical resistance, difficult to rework
  • UV-cure coatings — fast processing, inline inspection
  • Flux and chemical compatibility before coating

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Application Methods

Matching your application method to production volume and board complexity:

  • Brush application — low volume, prototyping, touch-up
  • Spray can — small batch, field repair
  • Selective coating machines — high volume, automated masking
  • Dip coating — full-board coverage, simple geometries
  • Thickness measurement and IPC-A-610 acceptance criteria

Related Resources:

Masking & Selective Protection

Protecting connectors, test points, and keep-out areas during coating:

  • Conformal coating tape — when and how to use it
  • Liquid masking compounds for complex geometries
  • Connector boots and caps for high-volume masking
  • Removal of masking after coating cure

Related Resources:

PCB Repair & Rework

Protecting and repairing PCBs at the benchtop:

  • Conductive coatings for PCB trace repair
  • Fast-cure repair compounds for prototyping and field repair
  • MG Chemicals acrylic conductive coatings

Related Resources:

Related Hubs

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Need help selecting the right conformal coating for your application? Browse our complete resource library or contact our team for personalized recommendations.

Quality

MTE Solutions is committed to providing quality products, services, customer satisfaction and loyalty by continuously improving to provide a positive customer experience that meets or exceeds our customer's requirements. Which is why we are proud to announce we are officially ISO 13485:2016 & 9001:2015 certified. The Quality Management System is applicable to: Distribution, warehousing and value-add services of consumable products for electronic contract manufacturing and medical device manufacturing.

 ISO 9001 is the world’s most widely recognized quality management standard and helps organizations to meet the expectations and needs of their customers.  ISO 13485 sets the quality expectations of the medical device industry and is the critical quality standard required to support our global customers.  As part of the certification process, MTE Solutions engaged in a rigorous audit of our business processes as well as our product quality environments.

As an industry Leader, MTE Solutions strives to be different and better than the competition. Very few Distributors will take the time or investment to make sure they have a quality system in place to make sure they are meeting the customers with exceptional service.

“At MTE Solutions, we are deeply committed to maintaining and improving the effectiveness of our Quality Management System. Quality is embedded in our company’s culture – at every level of our organization, MTE Solutions expects, demands, and delivers exceptional quality,”

CEO Derek Roth

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