Re: Are your transistors growing whiskers in their old age?

Geoffrey Thomas
 

That's why it's used in galvanising to protect against rust, any holes and the zinc spreads itself out to seal the hole. Rustproofing fails when the zinc is depleted.

Geoff.

On 03/03/2020 15:58, Brad Thompson wrote:
Geoffrey Thomas wrote on 3/3/2020 9:53 AM:

The AF117 transistors were exhibiting this problem in the late 1970's, tin whiskers is why we had lead in solder, of course.
Hello--
Zinc also grows whiskers:
https://www.cableorganizer.com/learning-center/articles/zinc-whiskers.html
73--
Brad  AA1IP

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