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
Electronics Forum | Wed Feb 26 18:48:01 EST 2003 | kennyg
I'm trying to solder a 0.011" lead into a 0.015" +/-0.003" hole. Stop laughing please. This is normally possible with difficulty, except if the lead is removed and the attempt is made to re-install a lead. Anyone have thoughts on how to remove nea
