Inge,

Galden makes fluids that go to 260C...

http://www.solvaysolexis.com/static/wma/pdf/9/7/7/0/Galden%20VPS.pdf

Mike

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar
Sent: Wednesday, September 24, 2008 9:26 AM
To: [log in to unmask]
Subject: [TN] Soldering SMA to heavy RF packages, need advice

 TNetters godday.

Target is very large metal packages with bright nickel finish. Imagine
soldering hermetic feedtrues. Nickel needs higher temperature and longer
exposure time than copper, silver, gold and other metals. Vapour phase
soldering is maximum 218 Centigrades, which I believe is not high
enough. Iron soldering is not practical for launches. IR oven could be
an idea if we add protection gas. Hot gas stations (Nitrogen)seem to be
too lame. Resistance soldering not tested, unknown for SMA. Torch heard
of, ought to be impractical, will burn flux and miscolor package. Laser
soldering not practised.

Anyone out there with experience from this kind of soldering?

Inge

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