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
An IBM circuit board from a NASA Space Shuttle computer with a conformal coating applied
Conformal coating dip system
Conformal Coating Inspection Booth
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
Conformal coating
…exposure; they allow moisture to escape but protect against contamination. More recently, conformal coatings are being used to reduce the formation of whiskers and to prevent current bleed between closely positioned components. Precision analogue circuitry may suffer degraded accuracy if insulating surfaces…
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