Electronics Forum | Tue Nov 29 21:51:37 EST 2005 | wmeyers
I have a pin and sleeve assembly that utilizes a fusible link type of solder, Bi, Cd, Pb and Sn alloy. The pin is gold plated, the sleeve is copper alloy 725. I have had sporadic success with wetting of the sleeve during the reflow process. To improv
Electronics Forum | Mon Apr 28 09:59:04 EDT 2003 | davef
Your customer's question is reasonable. Soldering to nickel is not always a walk on the beach [can of corn, or whatever]. This issue is flux not solder. Your Sn63 will have plenty of strength, providing the solder connection is well formed. You s
Electronics Forum | Wed May 11 13:27:30 EDT 2005 | Sam Ho
i want to know which type of solder paste and reflow profile can support the solder pad with nickel but not covered gold on the pcb.
Electronics Forum | Wed May 11 13:50:30 EDT 2005 | russ
I would contact your paste supplier, bare nickel can be impossible to wet to. How oxidized is it?
Electronics Forum | Thu May 12 07:54:37 EDT 2005 | Rob
We talked about something similar here: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=8051&#Message31805
Electronics Forum | Thu Mar 31 13:48:19 EST 2005 | shannond
Hi All, I have to solder a device with platinum clad nickel leads to a PCB. I am having a hard time getting solder to flow on to the leads. Are there special proceedures that I need to follow because of the platinum or am I just dealing with contamin
Electronics Forum | Thu Mar 31 19:52:50 EST 2005 | davef
We agree with Russ that you're talking palladium instead of platinum. Your wetting problem likely is not the Pd-Ag surface layers, but the underlying metal or nickel to which you need to wet. Either a base metal is: * Contaminated and poorly wettabl
Electronics Forum | Fri Apr 01 18:41:09 EST 2005 | KEN
Agreed. In my experience you will not wet solder to: Platinum Iron Constantine Tungsten Carbide titanium Chromalloy allomega alloy 303, 304 ...and the list goes on and on. You will either need to weld or braze. These are high temperature prcesses
Electronics Forum | Thu Mar 31 17:27:36 EST 2005 | russ
Are we possibly talking palladium instead of platinum? I haven't yet heard of platinum terminations (seems expensive) If it is palladium over nickel, I can tell you that you need to reach 225-230 Deg. C in reflow and the TAL should be about 90 sec.
Electronics Forum | Fri Apr 01 11:18:42 EST 2005 | russ
Platinum indeed! I would suggest that you contact your solder/flux supplier and see what they have to say. I am sorry but I have never had to deal with this finish before. Please post your findings if any. Good Luck Russ
