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Date: | Tue, 13 Jun 2000 08:50:52 +0200 |
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Zyphertronic's..hm..sounds like something from StarWars. Is it like dr Tresky's machine? / Ingemar
-----Original Message-----
From: Creswick [mailto:[log in to unmask]]
Sent: den 10 juni 2000 17:15
To: [log in to unmask]
Subject: Re: [TN] Zyphertronics's low melt solder rework alloy and
rework station?
Ken,
I tried it for removal of power MOS-FETs (bare die, approx 0.300"square)
from ceramic substrates without a great deal of success. This was most
likely due to having very little exposed (initial attachment) solder (Sn 63
or Sn 10) exposed for their low-melt solder to alloy with. For this
application it was also not very user friendly for keeping the nearby
conductives (10 mil line and space) free of rework solder. I also had some
initial reservation about residual low-temp solder remaining to corrupt the
subsequent joint - but I never got that far.
I am sure it would work quite well for most SMD's with relatively large
exposed solder joints, etc.
I would at least do some DSC's on resulting joints to assure myself that the
melting point had not changed too much.
What this does to the microstructure and resulting reliability, I can not
answer. Possibly some of the real solder guru's out there have comments.
Steven Creswick
CTS RF Integrated Modules
At 12:20 PM 6/9/00 -0700, you wrote:
>Can anyone share experience/concerns of Zyphertronics's low melt solder
>rework alloy and rework station?
>
>
>re,
>ken patel
>______________________________________________________
>Ken Patel Phone: (408) 490-6804
>1708 McCarthy Blvd. Fax: (408) 490-6859
>Milpitas, CA 95035
>
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