Electronics Forum | Fri Feb 17 14:00:26 EST 2006 | DannyJ
Baer, Sara, et al., Thank you all for your responses. I apologize, we have a new line installed and have been quite busy the last month... I'm downloading the video as I type this from pkay. Samir, please, if you get the sample and give it a tri
Electronics Forum | Fri Feb 17 14:54:45 EST 2006 | Baer
We have a great deal of new reliability data and we are preparing a full document that shows the statistically valid reduction in solder related defects as well as the improved throughput. It will include all of the SIR test results which are all goo
Electronics Forum | Sun Feb 19 17:01:28 EST 2006 | Baer
A 70 reduction in solder useage is about what we are seeing. You are correct that there are machines that work better with MS2 than others. We are able to make slight modifications to those units, mainly making it more difficult for dross to hide fro
Electronics Forum | Tue Nov 24 19:07:12 EST 2009 | gregoryyork
I agree Patrick many people blame the assembly fluxes when it is some other hygroscopic chemistry left on the bare PCB such as surfactents from the HASL process these will do exactly what the guy reported in his post fail then cool down and pass ever
Electronics Forum | Fri Dec 10 12:24:46 EST 2010 | davef
Causes of dewetting in conformal coating. Factors that influence dewetting usually involve non-ionic contamination such as: * Residues from board manufacture including silicone surfactants from solder resist & HASL rinse contamination * Component res
Electronics Forum | Tue Aug 03 18:11:21 EDT 2004 | davef
Improper washing of water soluable flux residues can be a major contributor to flux residues remaining on the board surface. ;-O That you appear to be only complaining about the pathetic state of the ability of your washer to clean under BGA, it may
Electronics Forum | Mon Oct 15 13:41:49 EDT 2001 | bschreiber
Hi Dale, I have copies of the articles of which Mike references. If you need copies for support, contact me at: bill@smartsonic.com. Rinsing should be done by ultrasonics also. Spray in atmosphere systems will not penetrate into the same tight ar
Electronics Forum | Tue Oct 22 14:57:18 EDT 2002 | Jim M.
I use a water soluble flux to solder an LCD into gold plated through holes of a .031 circuit card. Problem is the current water soluble flux (850-33) is not made anymore (the drop in replacement has a different formuala and does not work). The main i
Electronics Forum | Wed Mar 15 15:04:51 EST 2006 | Fliyer32
I tried MS2 for almost two weeks and I can see it works. MS2 is more a preventive tool rather than a solution to convert pour on top of the dross. Very important if you use this stuff is that you do the encapsulation of the wave, the bigger the surfa
Electronics Forum | Sat Apr 15 18:57:20 EDT 2006 | Baer
It works. It is a process chemical that works for leaded and lead free solders (two different products) take a look at the website http://www.pkaymetal.com and look at the MS2 Molten Solder Surfactant sub page. The reliability data is there. It has b
