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 | Fri Apr 01 10:35:09 EST 2005 | shannond
Definitely platinum http://www.omega.com/Temperature/pdf/1PT100FR_RTD_ELEMENTS.pdf
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
Electronics Forum | Fri Apr 01 15:43:26 EST 2005 | davef
Shannon: These detectors are aimed at applications that get bitchin' hot, like 600*C. We doubt there was a plan [by Omega] to have you use some sappy little 220*C solder to attach these leads. Check with your supplier, but we're wondering if you ca
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 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 | 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 | Thu Aug 12 11:00:42 EDT 2010 | hegemon
Without seeing a picture, my first instinct would be first and foremost some fixturing that provides full support for your print process. After that, since you are citing bow and twist, consider that the fixturing might as well travel through the ov
Electronics Forum | Mon Apr 29 16:56:13 EDT 2002 | gsmguru
Look at: http://www.bergquistcompany.com/therm.htm The material is made by Bergquist Inc. All sorts of good stuff on their website. Look under Thermal Clad. Dave G
Electronics Forum | Thu Nov 08 22:27:52 EST 2007 | jkhiew
Did the PTH barrel ends in massive copper clad ? If yes this type of poor thermal layout topside heating is often recommended.
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