Often, electrical systems prone to whisker growth are coated with a 2-3 millimeter layer of polymer (called a conformal coat); this not only prevents growth of whiskers, but also prevents any loose electrical contacts from creating short circuits. There are many benefits that are associated with doing this. Another likely cause of crystalline whisker growth may be residual stress of the circuit after the solder has been electroplated; thus, several strategies, such as using dip-soldering, or hot-oil reflow, are used to release the tension.
One of the better strategies for mitigating tin-whisker growth, however, is to simply avoid tin-zinc solders; this, however, may not be the most viable option as replacements aren't exactly the same.
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