Please tell me about Whisca.

Please tell me about Whisca.

Q: Please tell me about whiskers. A: Whiskers refer to fine, wire-like metallic crystals that occur from tin plating and zinc plating. In electrical and electronic components, the growth of whiskers can cause short circuits, making their suppression a significant challenge. It is said that whiskers are particularly likely to occur in bright tin plating, but they can also occur in matte tin plating. The prevailing theory is that internal stress within the plating film during plating or in corrosive environments is the cause of whisker formation, but the exact mechanism of their generation remains unclear. To reduce the occurrence of whiskers in tin plating, methods such as alloy plating with reflow, silver, copper, and bismuth are being implemented, but complete suppression of whiskers has not yet been achieved.

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