Electronics Forum | Thu Apr 18 17:30:09 EDT 2002 | davef
It's a reasonable recommendation. Look here http://www.safetyinfo.com/safetyinfo/html/aa-guest-info/s-talk-chem-bonding.htm These will get you started: * http://www.princeton.edu/~ehs/labmanual/sec7-2.html * http://www.ccohs.ca/oshanswers/prevent
Electronics Forum | Sat Apr 20 10:12:16 EDT 2002 | davef
If people use an inert gas, they use nitrogen for mass soldering. Inert gases get progressively more expensive as you move down the periodic table. Many times no-clean flux is less active than other flux types. So, people use an inert gas to lower
Electronics Forum | Fri Apr 19 15:48:28 EDT 2002 | davef
I don�t know much about zinc either. I can tell you that zinc forms no intermetallics with lead. So, I�m not so sure that �diffusion� is the correct term. Of the following: * Hwang "Modern Solder Technology For � * Wassink "Soldering In Electronic
Electronics Forum | Wed May 01 12:05:44 EDT 2002 | peterson
FMEA, when used correctly, is an excellent tool. The best thing about it is that it holds INDIVIDUALS accountable. The meeting cannot be closed until specific people (usually process types like me!) are assigned specific duties. I agree with Dave tha
Electronics Forum | Tue May 07 07:41:33 EDT 2002 | Sir Alexandr
Hello ! That was an one of our troubles. But we decidet it. Our way : 1. Vibrofeeders of Phillips may be ajusted for special ironrails , horisontallylairs , so IC goes permanently and correctly, also we create some acceptable subfeeder for Phillips
Electronics Forum | Wed May 08 10:56:32 EDT 2002 | cmay
If you are talking about "low" volume another option you could consider is using a waffle tray. At a previous company we made low volume high value flexi-rigids. Like you, no-one would buy volume on reels. Luckily we had our own machine shop and we m
Electronics Forum | Sun Apr 21 09:34:03 EDT 2002 | hany_khoga
Dear all: We need to glue some chip capacitors (0603 & 0805) before continuing the process of placing the topside SMT components. As a subcontractor we received the whole materials including the glue. After experimenting several temperature profiles
Electronics Forum | Mon Apr 22 13:05:52 EDT 2002 | davef
Try: Somar Corporation, 11-2, Ginza 4-chome, Chuo-ku Tokyo 104-8109, JAPAN http://www.horiba.co.jp/ +81 3 35422151 +81 3 35422056 Not to imply there is anything wrong with Somar's material [having never used the material], just looking at an alterna
Electronics Forum | Mon Apr 22 16:55:42 EDT 2002 | russ
Greetings All, Anybody out there experiencing white residues after cleaning? We currently use a batch cleaner to clean water soluble fluxes. this cleaner makes its own DI water by means of carbon and resin tanks. After cleaning there are residues
Electronics Forum | Tue Apr 23 14:20:48 EDT 2002 | russ
We have not yet sent this out for analysis, So, I don't really know what it is. initial evaluation would lead me to believe that it is flux since it is only present on the solder joints themselves and nowhere else. I noticed that you also mentioned
