Electronics Forum | Mon Nov 04 14:05:51 EST 2002 | cnoonan
This is what pisses me off in this industry today. It seems the operators are in charge of the whole process. Management and supervisors are too afraid of lawsuits to lay down the rules and enforce them. If your procedure states and I am sure ever
Electronics Forum | Wed May 26 06:59:10 EDT 2004 | davef
Some peelable solder masks attack immersion finishes. It appears components in the peelable soldermask, such as ammonia, are not very friendly to these particular surface finish. [We've wanted to investigate the effect of mask application thickness
Electronics Forum | Wed Nov 26 19:10:05 EST 2014 | caurbach
While I can't directly answer your question, we've had the same problem here occasionally. Our wash parameters are roughly the same as yours. It seems to be correlated to the diameter of the cap (larger caps will balloon while most smaller caps are
Electronics Forum | Sat Aug 01 02:38:50 EDT 2015 | sarason
Is the company near to you, if so walk up to the back door, with a load of cash in hand and a suitable container. Another option get your hands on their formula and have it made up by a chemical batching company. If you can't do that get the MSDS and
Electronics Forum | Thu Feb 01 07:41:01 EST 2018 | dontfeedphils
Interesting, never heard of using wax as a coating mask. Not sure how well the AR coating would hold up to a hot alkaline wash (unless you have experience with it), but that stuff usually starts to flake off/de-wet if you just look at it wrong. I'm
Electronics Forum | Tue Mar 21 20:33:09 EST 2000 | Dave F
Shane: We don�t dispense, but we have thought about it. Several points about peelable solder masks in a no-clean (low residue) process: � Beware of latex peelable solder mask with a low res process without extensive testing. The problem is usuall
Electronics Forum | Sat Jan 23 16:07:20 EST 1999 | Steve Gregory
| hi, | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier proces
Electronics Forum | Mon Jun 18 11:17:40 EDT 2001 | Howie
The adhesive type is the problem generally - latex adhesives used are not compatible with the silicone. Humiseal offer silicone compatible tapes & dots although they are quite expensive. I found a 3M product which is compatible with silicone based co
Electronics Forum | Fri Nov 01 09:46:25 EST 2002 | caldon
Lead Links- Only a small amount of lead can be absorbed through the skin, but nonetheless can be. Any cuts, abrasions raise the risk significantly. Also remember lead can be present on the skin and ingested, again a high degree of concern. From these
Electronics Forum | Tue Apr 05 08:41:39 EDT 2005 | aj
Guys, I posted a thread on this sublect a while back and I thought we had it sorted but we have the same issue again. One of the SMT operators has chapped skin,sores which sometimes cause cuts. This looks extremely uncomfortable. We thought it was
