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Tin whiskers are slender, needle-shaped tin whiskers that form spontaneously on the surface of pure tin (Sn) or of a tin-containing alloy. These whiskers are usually only a few micrometers in diameter, but can be several millimeters long or even more than 10 millimeters long, which can cause serious reliability problems. The following is a comprehensive explanation of tin whisker growth mechanism, influencing factors and inhibition measures: