JEDEC JESD 22-A121A (R2014)
- MEASURING WHISKER GROWTH ON TIN AND TIN ALLOY SURFACE FINISHES
- standard by JEDEC Solid State Technology Association, 07/01/2008
- Category: JEDEC
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The predominant terminal finishes on electronic components have been Sn-Pb alloys. As the industry moves toward Pb-free components and assembly processes, the predominant terminal finish materials will be pure Sn and alloys of Sn, including Sn-Bi and Sn-Ag. Pure Sn and Sn-based alloy electrodeposits and solder-dipped finishes may grow tin whiskers, which could electrically short across component terminals or break off the component and degrade the performance of electrical or mechanical parts.
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