[Elecraft] How Tin-Whiskers Form

[N2TK, Tony]

As a manufacturer of space discrete devices, we use lead in all of our
solder. It is a requirement to help suppress the growth of tin whiskers. To
date, no one has come up with an alternative to lead.   We keep trying to
find an alternative. So, no we are not RoHS compliant. All satellite
companies world-wide require lead in the solder.

73,
N2TK, Tony

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Vic K2VCO
Sent: Monday, December 10, 2012 11:05 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] How Tin-Whiskers Form

Fascinating, as are the comments following the article. The removal of
metallic lead from electronics that should be recycled anyway, in return for
a large increase in failures, does not seem to me to be a good deal for
civilization (some of the comments mentioned the removal of lead from
gasoline, which in contrast was a very good decision).
There should be a name for the irrational fear of tiny quantities of
substances that would be harmful only in large amounts -- like RF, to give
another example.
No, I will not answer outraged personal emails on this subject!

On 12/10/2012 1:08 AM, VK1OO wrote:
> All,
>
> Over the years there has been the odd thread about "tin-whiskers", so 
> the following may be of interest.
>
> http://phys.org/news/2012-12-doctoral-student-unravels-tin-whisker.htm
> l
>
>
> Mike
> VK1OO
> K2#2599
>

--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/

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