Electronics Forum | Tue Jun 29 10:56:37 EDT 2004 | davef
It's a reasonable question. Maybe Francois Monette (fmonette@cogiscan.com) will join-in. I believe he's on the 033 committee. [Kenny G: By the way, I bought a couple of your albums in the mid-1980s. Very innovative stuff, at the time.]
Electronics Forum | Tue Jun 29 14:33:49 EDT 2004 | fmonette
This is an active item of discussion for the upcoming revision of J-STD-033. Most likely the bake table 4-1 will be modified to include guidelines for level 2 components. Francois Monette Cogiscan Inc.
Electronics Forum | Fri Jul 02 17:08:58 EDT 2004 | blnorman
We used to use Alpha paste. Every summer we had solder ball problems when the humidity rose. Time frame sounds like this is something to check in to.
Electronics Forum | Sat Jul 03 02:13:01 EDT 2004 | yukim
The manufacturer says that since this solder paste has synthetic flux (not natural rosin) it is sensible to humidity. Worked with reflow profiles, but no remarkable improvements. We are changing solder paste every 2 hours.
Electronics Forum | Tue Jul 06 08:10:34 EDT 2004 | yukim
The manufacturer confirmed that it is humidity - the solder paste is too sensible to humidity. Now I tried Koki solder paste with good result. But, it does leave flux residue in good quantity. Does anyone have experience with Koki solder paste?
Electronics Forum | Wed Jul 07 02:20:48 EDT 2004 | Koki
Please let me know exactly the Koki specification that has managed to solve the balling issue and we can look at the level of residue or the cosmetic may be what you wish to improve.
Electronics Forum | Tue Jun 29 06:43:05 EDT 2004 | davef
Look at: TP-1115 - Selection And Implemetation Strategy For A Low-Residue, No-Clean Process
Electronics Forum | Fri Jun 25 07:13:40 EDT 2004 | davef
Nelco was developed by Park [ http://www.parknelco.com/parknelco/highspeed.htm ] Without fairly involved testing, you may be forced to rely on a c of c from your fabricator. Although, Park may be able to give you a lead.
Electronics Forum | Fri Jun 25 11:52:30 EDT 2004 | waveroom
What are the specifications on the solder that you use? IE: Water soluble,RA,RMA, N/C? Also do you clean the boards and if so how and what detergent if any are you using?
Electronics Forum | Fri Jun 25 12:10:34 EDT 2004 | tcp
We use water soluble paste, Kester R560. These units are wave soldered and cleaned in an Electrovert Aquastorm water wash with a 3% Kester saponifier solution in the first stage.
