http://www.johnsonmfg.com/temp/J35TX.htm
Never use this before... But did use some acid flux....(can't find it
anymore).
                                                              jk

>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of
>Brian Ellis
>Sent: Friday, May 30, 2003 2:59 AM
>To: [log in to unmask]
>Subject: Re: [TN] Nickel plated wire...
>
>
>Steve
>
>I agree with David and, in fact, would NOT recommend
>Ni-plating for soldering to. It can be reliably soldered using
>strong halide-activated fluxes, preferably water-soluble. You
>may not wish to use these for rework for obvious reasons. As
>David says, pretinning is a good solution provided you wash
>off the flux residues from the pretinned wire. But then,
>pre-tinned wire is no longer nickel plated, is it? It is
>tinned. So why not use tinned wire in the first place? This is
>obvious and I cannot understand a MIL spec that disallows
>tinned wire and allows silvered wire, which could whisker like
>hell if you so much as curve it into place. Doesn't make
>sense. But then neither do thousands of specs, standards and
>other regulations written by technocrats whose only aim in
>life is to ensure they appear busy enough to keep their cushy
>job. I have always claimed that good commonsense, based on
>science, is worth more than ten-thousand standards. This is
>just a case in point.
>
>Brian
>
>Steve Gregory wrote:
>> Hi All,
>>
>> I was posed this question by one of our customers. I don't have any
>> experience with nickel plated wire, but it would seem to me to be
>> difficult to solder to. I've used tin plated, and silver plated wire
>> before with no problems. But I didn't know that silver
>plated wire had
>> corrosion problems. Any inputs?
>>
>> In the future we are going to be changing to specify a nickel plated
>> wire (M22759/10-28-9) for PWA repair.  The previous part
>number was a
>> silver plated wire.  We haven't used this before.  Do you or any of
>> your manufacturing people know of issues with solderabiliby
>when using
>> a nickel plated wire or any special process that should be used?
>>
>> The history of this is IPC-7721 paragraph 6.1 says silver
>plated wire
>> must not be used because it can cause corrosion of wire in certain
>> situations. Turns out that when you follow MIL-23200 the
>allowed wire
>> is either silver plated or nickel plated.  We would have
>preferred tin
>> plated wire but it doesn't appear to fall under the allowed
>MIL-23200
>> options.
>>
>> Thanks in advance!!!
>>
>> -Steve Gregory-
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