Electronics Forum | Thu Dec 16 16:28:51 EST 2004 | Indy
Hi, We are using Sn/3.0Ag/0.5Cu solder paste on Pd/Ag pad metallization in one of our application. Could someone provide me information on the following: 1. How bad is the Leaching of Ag in SAC alloy and how it can be mitigated. 2. During reflow so
Electronics Forum | Tue Nov 21 09:46:19 EST 2006 | jax
I assume you are talking about Sn62Pb36Ag2 solder. You should not see any added concerns when subjecting Sn62 to multiple reflow cycles as compared to Sn63. As compared to Sn63Pb37: Reduced leaching issues Increased Wetting due to lo
Electronics Forum | Thu May 09 15:30:57 EDT 2002 | TomN
I'd be a more than a little cautious about doing this. Had a somewhat different application once and found out that as the solution was cleaning/etching the surface, it also leached (thru the lead frame) into the body of the part. What we thought w
Electronics Forum | Tue Apr 09 05:36:27 EDT 2002 | lhudson1
Silver in the paste is present to minimise any negative effects of silver in the pcb finish or component terminations. 2% Ag prevent silver leaching thus giving a more reliable joint.
Electronics Forum | Fri Jul 14 14:05:55 EDT 2006 | nodlac
Additional to Dave F.... A potato has Iron @ 2.75mg and Magnesium @ 55mg. The leaching of these two meatls could contaminate the solder pot and taint the solder. ----------------------- Additional to my additional..THE SOLDER POT POTATO BATTERY...A p
Electronics Forum | Tue Apr 19 16:20:05 EDT 2016 | davef
Don't blame it on the poor paste thickness requirement [although I might go on to argue that it's could be a contributor to the issue]. Most likely you're the problem. About 70% of the time solder on gold fingers is caused by poor cleaning of screen
Electronics Forum | Thu Feb 27 16:23:37 EST 2020 | dwl
http://www.circuitnet.com/news/uploads/3/Comparing-Soldering-Results-of-ENIG-and-EPIG-Post-Steam-Exposure.pdf Years ago, I battled this problem. ENIG PCBs reflowed with active WS flux. We built one side, and then washed them because they were going
Electronics Forum | Fri Apr 25 14:56:40 EDT 2003 | razor
Please explain the phenomenon of solder leaching on SMD end caps. What is the root cause? What is the best control method?
Electronics Forum | Sat Feb 28 18:09:49 EST 2004 | Indraneel
Hi, I am having some problem during reflow of solder paste. There seems to be leaching of solder paste. Can anyone let me know some solutions to minimize it . Rgds Indraneel
Electronics Forum | Sat Feb 28 20:26:00 EST 2004 | Ken
Can you give some more detail to your problem? What eactly are you seeing?
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