Technical Library | 2017-04-13 10:57:53.0
Parylene has been used for decades as a barrier layer to protect critical devices and components. The parylene deposition process typically requires an adhesion promotion step to make sure the parylene adheres well to the base substrate. Typical adhesion methods don't work well on Kapton and Polyamide, until VSI Parylene came up with a solution.
Technical Library | 2015-03-26 19:16:03.0
Nickel-palladium-gold-finished terminals are susceptible to creep corrosion. Excessive creep corrosion can result in device failure due to insulation resistance loss between adjacent terminals. The mixed flowing gas test has been demonstrated to produce creep corrosion on parts with nickel-palladium-gold finished terminals. Conformal coats are often used to protect printed wiring assemblies from failure due to moisture and corrosion. However, coating may not be sufficient to protect lead terminations from failure.In this study, acrylic, silicone, urethane, parylene, and atomic layer deposit (ALD) coatings were examined for their effectiveness at preventing corrosion of nickel-palladium-gold-finished terminals.
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