Electronics Forum | Fri Feb 21 20:14:53 EST 2003 | MA/NY DDave
Hi I don't know of anything special in the ways of dispensing since they don't normally care about the differences of UV or Conductive or pastiness. The only difference is WHAT you are striving to do with the adhesive and how the adhesive moves as
Electronics Forum | Fri Feb 21 19:49:36 EST 2003 | MA/NY DDave
Hi Good Luck Neil, When I first saw this process described, what you are experiencing was my first visual thoughts. Partial filling as well as huge solder voids inside of the joints. I figured for low reliability product or short life maybe this t
Electronics Forum | Fri Feb 21 11:21:31 EST 2003 | MA/NY DDave
Hi "PCB blank quality. " I am not sure what the word blank means. ------------- I can think of piles of places for you to start study. First digest some of the IPC stuff. They have some good pictures. I would also start collecting defects that ar
Electronics Forum | Fri Feb 21 11:22:13 EST 2003 | MA/NY DDave
Hi "PCB blank quality. " I am not sure what the word blank means. ------------- I can think of piles of places for you to start study. First digest some of the IPC stuff. They have some good pictures. I would also start collecting defects that ar
Electronics Forum | Mon Feb 24 10:03:03 EST 2003 | davef
YiEng, MA/NY DDave, Look at: * Description on first item on this list: http://laser.jlab.org/bairweb/hardware/vme/vme_spares.asp * Description of first item on each list: http://www.audiocircuit.com/9120-valveamplifier-circuit/Diy/Diypackages/Curci
Electronics Forum | Tue Feb 25 14:42:28 EST 2003 | MA/NY DDave
Hi UNCLE!!! UNCLE!!! You know maybe I do remember this term, yet it is so long ago it doesn't ring a clear bell. From the stuff you passed over it had to come from the electrical technicians and engineers. Bare Boards was a more common term in m
Electronics Forum | Tue Mar 11 15:24:24 EST 2003 | MA/NY DDave
Hi You are a young guy yet, I bet! No fair with that taste of that old black or dark beard effect. It was great while it lasted, yet I like this new grey stuff. Too bad in the USA it is seen as a Done-With it affect. Shave the face and almost no
Electronics Forum | Tue Feb 25 13:44:12 EST 2003 | slthomas
One addition to Dave's comments.....my previous experience yielded one key observation about the differences between ISO audits and GMP (FDA) audits: ISO audits were to establish that you had a documented process, complete with procedures, establishe
Electronics Forum | Wed Feb 26 11:06:27 EST 2003 | slthomas
Always a joy to see a stencil cleaner thread get opened up....lots of varying opinions as to what's needed, best, environmentally sound, etc. We use an ultrasonic batch cleaner that uses a detergent (dilute to 1:10 or 1:20, can't remember), then bo
Electronics Forum | Wed Feb 26 15:26:44 EST 2003 | MA/NY DDave
What object am I cleaning 2>What chemicals/deposits am I removing (Chemistry?? 3>What is the process my machine uses. Now if Water Based works than you are OK from a cleaning aspect. The only problem as Mike noted, at least to my reading, is what ca
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