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Re: [TowerTalk] re; Whiskers growing where you cannot shave them

To: "Al Toothaker" <N6TA@arrl.net>,"'Bob Lombardi'" <boblombardi@cfl.rr.com>, <towertalk@contesting.com>
Subject: Re: [TowerTalk] re; Whiskers growing where you cannot shave them
From: "Tom Rauch" <w8ji@contesting.com>
Reply-to: Tom Rauch <w8ji@contesting.com>
Date: Sat, 2 Apr 2005 11:16:58 -0500
List-post: <mailto:towertalk@contesting.com>
> Whiskers are an issue in reliability of (usually space)
components and
> circuits.  The culprits are Tin >97% pure, 100% pure
cadmium and 100% pure
> zinc.  If these metals are NOT pure, there is little
problem.



Unless we send our solder joints deep into space or
otherwise place them in a vacuum for many years whiskers are
not an issue.

They only form in a high vacuum and it takes a long time, so
why worry about it?

73 Tom

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