Electronics Forum | Tue Apr 09 16:19:37 EDT 2002 | Peter L.
Has anyone built using the ALIVH PCB (0402, 0.8mm pitch uBGA) on the SMT line? I would like to know any process issues (paste printing, p&p, reflow) related to processing this pcb. Specifically, what type of solder paste was used (no clean) and wha
Electronics Forum | Sat Jun 12 17:01:44 EDT 1999 | Murray Pulman
We are using so called no-clean fluxws for our small batch production, however the results are not always very visualy pleasing with white powdery deposits being the norm. I would like advise on the best avenue to explore for a small batch cleaning s
Electronics Forum | Tue Jan 10 14:04:38 EST 2006 | Mike Konrad
Flashback time� Vapor degreasers, although still used in limited applications, no longer represent the conventional wisdom (due to multiple environmental issues). Aqueous-based technologies are the most common method of defluxing. Unlike most va
Electronics Forum | Tue Jan 10 20:39:06 EST 2006 | aqueous
Of course there are solvents which are less harmful to the environment than others. The operative phrase is �less harmful�. As a rule, water-based chemistries are �greener� than solvents. There are some solvent blends designed for aqueous-based eq
Electronics Forum | Tue Oct 11 10:49:14 EDT 2005 | jhagve
HI We start to make a product which have a 0.4 mm pitch IC and start having problems with not enough solder printed, to solve this problem we had to increase the manual cleaning, now we are cleaning the stencil every 8 printings, before we was runnin
Electronics Forum | Tue May 30 10:55:57 EDT 2006 | bryanhewson
I am a lay person researching the application of non-woven material in stencil rolls either using branded material or non-branded alternatives for DEK, MPM Panasonic machines in SMT environments. I have read a number of articles referring to aqueous
Electronics Forum | Thu Apr 11 19:12:11 EDT 2002 | djarvis
Sorry fellas -disagree. We only clean our stencils in the ultrasonic machine at the end of the run. If the same pcb is up the next day we clean them by hand. We use Electrolube SSS and the used rolls from the in line under stencil cleaner. Wipe the
Electronics Forum | Fri Feb 05 11:50:54 EST 2010 | baildl632
I just browsed this article and found no mention of cleaning with a "sonic" washer. We have a PMR Systems Ultrasonic Stencil Cleaner. The manual says it works well on cleaning PCB's for varoius reasons. It works excellent for removing lead. We can wa
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