Electronics Forum | Wed Dec 17 14:38:25 EST 2003 | davef
Francois Monette [Cogiscan Inc. 450-534-2644 fmonette@cogiscan.com ] is the resident genius on component and board baking. If he doesn't chime-in a in a day or so, give him a shout. He seems to nap quite a bit. Alternately, if you search on his na
Electronics Forum | Sun Jun 13 05:46:21 EDT 1999 | Brian Ellis
Murray "No-clean" fluxes/pastes should not normally give "white residues". Before exploring cleaning, which is costly for small production levels, I suggest you may care to find out why you have these residues. To help you, can you please answer th
Electronics Forum | Fri Mar 26 11:13:04 EST 2004 | Mike Konrad
jdomont, No-cleans are more difficult to clean than RMA�s. Even though no-cleans have a lower solids content than RMA�s, reflow and soldering profiles are normally more severe than those used for RMA. It is interesting to note that our most of our
Electronics Forum | Fri Mar 26 08:49:22 EST 2004 | patrickbruneel
Dear Sir, If you are looking for the best bang for the buck you will have to stop cleaning and use a no-residue paste instead of a no-clean. No-residue chemistry becomes totaly volatile in dwell time above reflow resulting in residue free boards. I
Electronics Forum | Fri Mar 26 10:23:55 EST 2004 | Mike Konrad
Patrick, When you say "no-residue" what exactly do you mean? Is there truely "no-residue" or is it "no visible residue"? What type of ionic contamination results have you experienced? If you take a bare board that measures 0.0 NaCl and reflow it
Electronics Forum | Fri Mar 26 13:32:37 EST 2004 | patrickbruneel
Mr. Dumont I want to be very clear on a couple of points. The intention of my response to your thread was to bring you a solution for your problem "free of charge" The no-residue is not developed yesterday. The no-residue is developed in 1988. Becau
Electronics Forum | Mon Mar 29 14:58:08 EST 2004 | davef
Josh: Final cure of the LPI solder mask: 310*F for 45 minutes. Your board fabricator needs to do a better job. Most fabs do not check cure, because the processes subsequent to cure are so brutal that the fab expects the following process to highlig
Electronics Forum | Fri Apr 02 01:10:01 EST 2004 | Grant Petty
Hi, We tried that, as the Soltec has a spray fluxer that can flux just the connector part of the board, however we get really heavy solder deposits on the rest of the board that has no flux sprayed on it, so we seem to need to coat the entire board.
Electronics Forum | Tue Nov 03 18:09:17 EST 2009 | gregoryyork
I think most have summed up the first pictures also is the drillng looking like it is misregistered as well. Better to do a solvent test to determine resist cure not the old stuff the newer chemicals show under cure problem much better. Try your st
Electronics Forum | Wed Jul 02 03:12:31 EDT 2003 | Joanna
We have been having problems with solder paste balls around fine pitch ICs and have decided that cleaning the boards in an ultra sonic cleaner may reomove these solder balls. However we are worried that the ultrasonic cleaning process may damage the
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