Ten Reasons to use Parylene Conformal Coatings on your Circuit Boards

  1. Parylene coatings are completely conformal to the surface of the PCB. This means that they have a uniform thickness and are pinhole free. As a result, component configurations with sharp edges, points, flat surfaces, crevices or exposed internal surfaces are coated uniformly without voids. This provides the best protection possible, can make the circuit board “waterproof” and is impossible to achieve with liquid conformal coatings.
  2. Parylene coatings are chemically and biologically inert and stable and make excellent barrier materials.
  3. Parylene conformal coating has excellent electrical properties: low dielectric constant and loss with good high-frequency properties; good dielectric strength; and high bulk and surface resistance.
  4. Parylene is completely transparent and can be used to coat optical elements like LEDs without changing the properties of the device.
  5. Parylene complies with USP Class VI Plastics requirements
  6. Parylene conformal coating is both MIL-I- 46058C and IPC-CC-830B listed.
  7. Parylene has achieved FDA approval of when used on devices and is well-documented.
  8. Parylene has good thermal endurance: Parylene C performs in air without significant loss of physical properties for 10 years at 80°C and in the absence of oxygen to temperatures in excess of 200°C
  9. Parylene coating completely penetrates spaces as narrow 0.01mm (10 microns)giving you a complete coverage of a circuit board.
  10. Parylene is unique in being created directly on the surface at room temperature. Room temperature formation means the conformal coating and the parts are effectively stress-free.

For further information on Parylene Coatings click

Or, contact us here at +44 1226 249019 or email sales@schservices.com


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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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