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Posted by daestrom on September 25, 2007, 7:46 pm
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>-> Tin degrades as well, it produces small hair-like crystals over
>time.
>
> As Napoleon discovered near Moscow. The tin buttons on his officers'
> uniforms disintegrated in the cold of a Russian winter.
>
> But warm tin is stable.
>
There not really a problem in power circuits, but google 'tin whisker' and
you'll find some surprising problems with 'warm' tin-lead solder. The tin
will grow 'whiskers' that can actually short out digital equipment and
low-power signal circuits.
daestrom
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