Metal Whiskers: A Discussion of Risks and Mitigation

Metal coatings, especially of tin, zinc, and cadmium, are unpredictably susceptible to the formation of electrically conductive, crystalline filaments referred to as metal whiskers. The use of such coatings in and around electrical systems presents a risk of electrical shorting. Examples of metal wh...

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Bibliographische Detailangaben
Hauptverfasser:	Brusse, Jay A, Leidecker, Henning, Panashchenko, Lyudmyla
Format:	Report
Sprache:	eng
Schlagworte:	ARATHANE 5750 BRIEFING CHARTS BUCKLING CADMIUM Coatings, Colorants and Finishes CONFORMAL COATINGS Crystallography ELECTRIC CONDUCTORS ELECTRICAL EQUIPMENT ELECTRICAL PROPERTIES Electricity and Magnetism EULER BUCKLING FILAMENTS HOT SOLDER DIP INHIBITORS INSPECTION METAL COATINGS METAL VAPOR ARCING OPTICAL DETECTION Optical Detection and Detectors Plastics POLYURETHANE COATINGS POLYURETHANE RESINS PREVENTION PROTECTIVE COATINGS RISK SHORT CIRCUITS SYMPOSIA TIN WHISKER INHIBITORS WHISKER MITIGATION WHISKER RESISTANT METAL COATINGS WHISKERS(CRYSTALS) ZINC
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Beschreibung
Zusammenfassung:	Metal coatings, especially of tin, zinc, and cadmium, are unpredictably susceptible to the formation of electrically conductive, crystalline filaments referred to as metal whiskers. The use of such coatings in and around electrical systems presents a risk of electrical shorting. Examples of metal whisker formation are presented along with a discussion of optical inspection techniques to improve the probability of detecting them. In addition, the briefing charts describe the failure modes associated with metal whiskers (i.e., electrical shorting behavior) and the benefits of polyurethane conformal coatings, like Arathane 5750, to protect electrical conductors from whisker-induced short circuit anomalies. Presented at the Annual Partners in Environmental Technology Technical Symposium and Workshop (15th) held in Washington, DC on 30 Nov-2 Dec 2010. Sponsored by SERDP and ESTCP.