Electronics Forum | Wed Mar 17 02:14:39 EST 1999 | Joe
| | We are having a small number (~2%) of our boards pass our manufacturing diagnostics, fail once they reach the customer, fail when they get back to us and then start working again after handling them for a short time. We have eliminated a lot of
Electronics Forum | Sat Mar 06 12:33:21 EST 1999 | Dean
| | I'm having a fun time between BGA rework/repair using an SRT 1000 and SPC efforts (much easier) using DEK stencil printing processes and BTU reflow with 6 Fuji lines in between. | | Concerning the BGA stuff, I'm getting about 60% success using
Electronics Forum | Sat Mar 06 08:26:59 EST 1999 | Dave F
| Clarissa, | | We place the parts using two different methods. One is using a Fritsch semi automated pick and place. The other is using a vacuum pen. One of the assemblers said if she just had to choose one, she would pick the vacuum pen. I kn
Electronics Forum | Fri Feb 19 16:45:55 EST 1999 | Steve Gregory
Hello Ryan! There's a company called Camalot that sells dispensers that in my opinion, make one of the better dispensers on the market. They use what's called a rotary-positive displacement pump when dispensing... much more precise and accurate
Electronics Forum | Sun Jan 31 22:55:33 EST 1999 | Dennis O'Donnell
| | Hello Netters, | | | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI
Electronics Forum | Wed Feb 03 04:44:43 EST 1999 | Jeff Sanchez
| | | Hello Netters, | | | | | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that t
Electronics Forum | Thu Jan 14 11:58:29 EST 1999 | Chrys
| | | | What's going on with Nepcon next year??? | | | | I have heard rumors allot of the big guys are moving to IPC/SMEMA show on a long beach somewhere in Calif.. | | | | | | | | Any info on who is planning to attend Nepcon 2k would be nice | |
Electronics Forum | Tue Dec 22 12:32:16 EST 1998 | Earl Moon
| Folk's, | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour, texture,
Electronics Forum | Thu Nov 19 08:20:04 EST 1998 | Earl Moon
| | | | For some as yet unkown reason, we have started to have some boards sag and go under the wave. The boards are surface mount top side and conventional components wave soldered. We have checked the wave hight and both the profiles on the wave so
Electronics Forum | Thu Nov 19 09:01:00 EST 1998 | Dave F
| | | | | For some as yet unkown reason, we have started to have some boards sag and go under the wave. The boards are surface mount top side and conventional components wave soldered. We have checked the wave hight and both the profiles on the wave
