Electronics Forum | Fri Aug 13 16:54:20 EDT 2004 | davef
If the terminations on your components are not barrier plated, you must be very careful about the amount of time you stay above liquidous. As you'd expect, longer is not better. The longer you stay at liquidous, the more of the component terminatio
Electronics Forum | Sun Sep 21 10:55:52 EDT 2008 | vladig
As long as the surface is solderable, you should be fine. Silver tarnish a well0-known thing. Make sure, though, there is no sulfur (S) "around". Regards, Vlad
Electronics Forum | Sun Jul 04 19:49:05 EDT 2004 | indy
Hello Everyone, We are having some problem with Palladium-Silver surface finish. We have ceramic components with the above surface finish. When we try to assemble these on Sn/Pb solder, we are observing open joints. If we reflow the compt for more t
Electronics Forum | Thu Jan 16 10:14:56 EST 2003 | barrett1
I have been using silver coated boards for over 3 years and with a Qualitek No-clean solder paste and have used primarily the same convection reflow profiles as Hasl boards.
Electronics Forum | Fri Apr 09 20:28:14 EDT 2004 | Ken
I have experience in this. My company offers Lead free SMT and Wave soldering. I have processed ImSn, ImAg, Enig, OSP in both smt and wave. Yes, silver leaching will occur. Yes, copper leaching will occur. High tin content solders disolve everyt
Electronics Forum | Wed Jan 15 19:27:43 EST 2003 | praveen
Grainy finish of the solder joint also caused by higher reflow temp.So far we have observed grainy structure in case of gold plated board.
Electronics Forum | Wed Jan 15 19:27:44 EST 2003 | praveen
Grainy finish of the solder joint also caused by higher reflow temp.So far we have observed grainy structure in case of gold plated board.
Electronics Forum | Thu Jan 16 10:18:53 EST 2003 | burb1999
I have heard that the profiles are pretty much the same but I have a visible solder joint difference... might half to start looking at the plating, might be something with that?
Electronics Forum | Thu Aug 12 18:06:09 EDT 2004 | SR
May I ask what component types you are using and who the suppliers are? FYI - If the components have exceeded their shelf life, they may have oxidized too much for soldering using low activity fluxes. Thanks and best regards, SR
Electronics Forum | Mon Sep 22 15:32:20 EDT 2008 | davef
We see this fairly often. It doesn't affect solderability. Our analysis makes us think this coloration is copper. The reason copper appears on the surface may be that heat cycles increase the thinness and porosity of the immersion silver [IAg] coatin
