Eric,

are you aware Ni is a poor conductor at certain frequencies, my side notice.
We solder on electrolytic halfbrigth Ni with RMA, but you need FRESH plating,
and vapour phase or N2 oven. If handsoldering, you must literally drown the
solder site in flux, and you need a lot more time than for ordinary SnPb.
It's all about the quality of your nickel plating.

There is an odd solution if everything else entangles: ultrasonic soldering bath.
I have soldered nickel dimes together, coins that I found on the floor and took
directly for soldering without cleaning or anything. Plenty of vendors.

http://www.misonix.com/Products/index.cfm?fuseaction=viewcategory&cat=25&div=11

http://chemindustry.intota.com/viewbio.asp?mode=&bioFile=/xml/biofull/617131data.xml&bioID=617131&strQuery=ultrasonic+soldering

/Ingemar Hernefjord
Ericsson Microwave Systems


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Eric Kalgren
Sent: den 17 augusti 2004 22:04
To: [log in to unmask]
Subject: [TN] Soldering Nickel Leads


Hey all,



I have a minor problem with a component in house.  The component leads
are 19 AWG nickel and I need to connect to them using 20AWG copper wire.
I looked in the archives for previous discussions on this topics and
came away with the impression that OA flux is required.  My question is:
Can I solder these parts without having to go out and get some OA flux?
We use RMA and I'm reluctant to bring in a different flux and have it
used rather than the RMA.  Can one mechanically prep the leads, then
flux with RMA, then dunk in the solder pot?



Thanks in advance for all your input!



Eric Kalgren

Manufacturing Engineer

Atlantic Microwave

Phone: 978-779-7062

Fax:     978-779-0101




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