Whisker (metallurgy)
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Metal whiskering is a phenomenon that occurs in electrical devices when metals form long whisker-like projections over time. Tin whiskers were noticed and documented in the vacuum tube era of electron
Silver whiskers growing out of surface-mount resistors
Microscopic view of tin used to solder electronic components, showing a whisker
Millimeter-long zinc whiskers on zinc-coated steel
Conformal coating
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Conformal coating is a protective, breathable coating of thin polymeric film applied to printed circuit boards. Conformal coatings are typically applied with 25–250 μm thickness on electronic circuitr
Whisker (metallurgy)
…the problem, including changes to the annealing process (heating and cooling), the addition of elements like copper and nickel, and the inclusion of conformal coatings. Traditionally, lead has been added to slow down whisker growth in tin-based solders. Following the Restriction of Hazardous Substances Directive (RoHS…
An IBM circuit board from a NASA Space Shuttle computer with a conformal coating applied
Conformal coating dip system
Conformal Coating Inspection Booth