Electronics Forum | Tue Aug 28 11:12:23 EDT 2007 | grics
This is what I was thinking, but I am being beat up pretty badly by the selective solder. Ambient temperature is anywhere in the the neighborhood of 76 - 80 degrees F. I am not sure of the RH, but I wouldn't think that would be my issue... One of
Electronics Forum | Fri Oct 19 11:51:25 EDT 2007 | rgduval
By definition, no clean solder can be not-cleaned. The solder/flux are formulated to result in low ionic-contamination, hence, no cleaning. I have, however, always had at least one customer that requests their no-clean solder get cleaned. No-clean
Electronics Forum | Wed Oct 31 12:37:28 EDT 2007 | jdengler
Hi aj, We recently purchased an AOI machine. While doing the first pass research to see which machines to put through a head to head competition I discovered a major improvement in the programming for newer machines. If you buy used, get one that
Electronics Forum | Fri Feb 22 13:24:24 EST 2008 | mulder0990
How did I know senior was going to get in here too. Nice to see you again. I figured as much with the height difference, but I do not have the equipment here to test my thoughts. We somehow have our machine dialed in to run the 0201 parts with W
Electronics Forum | Wed Mar 12 13:41:23 EDT 2008 | swag
We have a lead free assembly with a 128-Pin PQFP with 20 mil pitch leads. We have tried stencil aperture reductions, step-down stencils, different thickness stencils, various printer setting changes, placement pressure changes, nozzle changes, moved
Electronics Forum | Mon Apr 28 19:50:09 EDT 2008 | boardhouse
My guess is that either the board house did not cool the boards down properly coming out of the lamination oven. Typically after they come out of the heat chambers they go into a cool down chamber for x amount of time, if they cool to fast or are pu
Electronics Forum | Wed May 21 13:38:22 EDT 2008 | pjc
Solderpaste types have a big effect on print performance. Go to this link to see if the solderpaste you are using has been tested, see "Rheometric Pump Paste Tests" under MPM: http://www.speedlinetech.com/news_publications/application-notes.aspx?OnI
Electronics Forum | Wed Jun 04 00:28:27 EDT 2008 | chrispy1963
There are a couple of things that you can do. First thing to do is take a flashlight and shine it in the card edge connector of slot 2 and see if a passive component or any other part worked its way into that slot. This will cause multiple leads in
Electronics Forum | Fri Jul 25 11:29:50 EDT 2008 | wavemasterlarry
Listen, my people told me that i was being recalled to The Forum. Iam a busy man trying to erect my own company these days My fenture in China was an I opener and I feel I need to start working for myself there fore I haven't been on The Forum enou
Electronics Forum | Thu Aug 28 16:03:08 EDT 2008 | wavemasterlarry
I guess you're adding the gas to keep the fingers clean - sounds likeyou got your threads mixed up on the Forum. Any way I would suggest not doing this. Gas is pretty flammable. I have pix of one our Hollis cleaning machines going up in flames cau
