Category Archives: Conformal Coating

  • The pervasiveness of electronics in every manufacturing industry has provided unique challenges. Manufacturers are tasked with protecting these components

    conformal coating adhesion for electronics

    A populated printed circuit board before a conformal coating has been applied.

    in environments that make

    electronics vulnerable to even minute amounts of moisture, debris and environmental contamination.

    A useful solution to this problem is conformal coating. Conformal coating is a thin (usually 25-75µm thick) chemical or polymer film (parylene and acrylic are popularly used, depending on the application) that covers an electronic component to act as a barrier against contamination and a defense against moisture. While, this capability massively enhances the protection of, and therefore the reliability of, electronics, manufacturers have been overlooking a key element to dependability in this system: surface condition.

    Here are four major factors that could lead to poor adhesion which manufacturers are often unaware of the impact they have:

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