Conformal coating

Protect your printed circuit boards from exposure to harsh environments and extend the life of your boards. See if conformal coating is right for you.

Increase reliability in harsh environments

Contamination from moisture, dust, fungus, extreme temperatures, chemicals, and other environmental hazards can impact the performance of your PCBs. If your boards are exposed to these conditions, safeguard them with conformal coating.

Photo of a dimly lit room with a computer interface terminal.
Photo of a dimly lit room with a computer interface terminal.

What is conformal coating?

Conformal coating is a transparent thin polymeric film that conforms to the contours of your printed circuit board to protect the board’s components with minimal effect on your component weight. Conformal coating is used to protect the surface of the PCB from harsh elements. 

Why Use Conformal Coating?

Conformal coating extends the life of your PCB in harsh environments while protecting it from abrasion and moisture. It is ideal when you want to: 

  • Protect your PCBs from environmental contamination including
    • Moisture
    • Dust
    • Chemicals
    • Extreme temperatures
  • Other environmental hazards
  • Prevent bleed between close components
  • Allow closer conductor spacing
  • Minimize environmental stress on your PCB 
Photo of a dimly lit room with a computer interface terminal.
Photo of a dimly lit room with a computer interface terminal.

What types and methods do we use? 

MacroFab masks and then sprays your PCBs with the conformal coating. Here are the types we provide:

  • Acrylic
  • Silicone
  • Polyurethane

To ensure quality, we add a UV tracer to all of our conformal coating and inspect your boards for quality control under a UV light according to certified industry standards.

MacroFab’s headquarters use a spray coating method which is the second most widely used and accepted application. Advantages of spray coating are the ability to coat at high volumes quickly, reduced masking, better coverage and a more uniform thickness. 

We have a Partner Network of more than 40 factories, each with a specific set of capabilities, including various conformal coating types and methods. If you have specific requirements, our experienced team will match your project with a factory equipped for your needs.

The MacroFab Quality Guarantee

MacroFab guarantees the quality of our workmanship for one year after manufacture. If in the rare instance, your boards have issues with the workmanship, we’ll do whatever it takes to get it right – for free. Our service team will provide transparent communication every at every step and your information is 100% confidential; your intellectual property is secure. Our aim is to give you the best electronics manufacturing experience at globally competitive prices, with lower lead times and higher quality, all backed by an experienced team.

Photo of a dimly lit room with a computer interface terminal.
Photo of a dimly lit room with a computer interface terminal.

Is conformal coating right for you?

Speak to our Sales team if you would like to add conformal coating to your PCB assembly. We will determine if conformal coating is recommended for your build and will generate a custom quote based on your requirements.