Electronics Forum | Mon Jul 14 20:49:22 EDT 2003 | Thomas
Hi Need some help here. Anybody got the recommended profile for Sn50/Pb50 solder paste. Thanks.
Electronics Forum | Tue Jul 15 10:01:15 EDT 2003 | davef
We don't use Sn50, but if we did, we'd use our paste supplier's recommendation as the starting point for developing our reflow recipe.
Electronics Forum | Tue Jul 15 10:33:39 EDT 2003 | MA/NY DDave
Hi, What are you soldering with Pb50Sn50? YiEngr, MA/NY DDave
Electronics Forum | Tue Jul 15 21:05:55 EDT 2003 | Thomas
Hi Dave, I saw many of your outstanding comments and postings. Can you save me this time on the profile recommendation ??
Electronics Forum | Wed Jul 16 11:01:58 EDT 2003 | russ
Who is the paste manufacturer? They are the ones who can tell you what to run.
Electronics Forum | Mon Jul 21 21:59:08 EDT 2003 | davef
Theory #6 [maybe 3a?]: If you change your paste to a 'non-voiding' paste, your problem will go away. It's the flux in your paste that's killing you. The flux gets trapped in the solder and then releases ejacta that form the volcanic openings in you
Electronics Forum | Tue Jul 22 02:33:36 EDT 2003 | iman
Dave F, thats' the path of thought we are now bumbling along, but no way is the paste vendor is going to admit straight out to any such affirmation. Any literature online on this possible root cause? as it helps to gain substain-able theory in ha
Electronics Forum | Thu Jul 17 10:56:50 EDT 2003 | James
COULD SOMEONE PLEASE TELL ME OF A WAY TO CLEAN THE OXIDIZATION OF OF WHITE TIN PADS, I AM GETTING ALOT OF DEWETTING PROBLEMS. AND I CONCLUDED THAT ALL THE BOARDS WITH WHITE TIN ARE HAVING THE SAME PROBLEMS. THANKS FOR THE INPUT.
Electronics Forum | Thu Jul 17 12:08:56 EDT 2003 | russ
The only way I have been able to do it so far is to apply a very agressive flux and then wave the board and then wick all of the pads. (Totaly S#$KS). I trust you will eliminate this finish in the future? I hate tin for this reason. Russ
Electronics Forum | Thu Jul 17 15:23:23 EDT 2003 | James
It is really hard to tell what it is. It just looks like parts of the pad did not solder and you can see where the solder would even go around the pad leaving voids.
