Electronics Forum | Fri Oct 15 11:05:50 EDT 1999 | Mark Phinney
Earliar we had problems with board warpage, Much of our problem was due to imbalances in the copper on oppisite layers in brief on a 8 layer board the copper on layer 1 should = the copper on layer 8, 2=7, 3=6, 4 = 5. We added copper to some layers t
Electronics Forum | Tue Jul 20 08:30:07 EDT 1999 | Mark Quealy
I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk paste l
Electronics Forum | Tue Jul 20 17:24:24 EDT 1999 | Deon Nungaray
| I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk paste
Electronics Forum | Wed Sep 23 19:14:31 EDT 1998 | Phil Szypko
| | I can't seem to copy URL or company addresses for pasting from the SMTNet Directory. Dave F | Dave, | IE 4 seems to work fine with copy, yet Netscape 4.5b does not even allow a highlight. I think it must be a bug in Netscape. | We are also chan
Electronics Forum | Fri Sep 25 20:07:46 EDT 1998 | Larry
| | | I can't seem to copy URL or company addresses for pasting from the SMTNet Directory. Dave F | | Dave, | | IE 4 seems to work fine with copy, yet Netscape 4.5b does not even allow a highlight. I think it must be a bug in Netscape. | | We are a
Electronics Forum | Wed Jun 10 14:16:08 EDT 1998 | Robert Reilly
Jerry, I have been using the GSM for about 4.5 years. In my opinion this machine offers the most flexibility and upgradeability of any machine. The ease of use of the software is far superior to any other I have used . Hopefully you are using the
Electronics Forum | Thu Nov 01 04:31:47 EST 2001 | ianchan
I refer to IPC-A-610C, section 12.4.5, the defect term "dewetting". Can the experts pls help define the actual stages that constitute the formation of a dewetting defect? I do understand the common concept teachings that there may be contamination
Electronics Forum | Mon Aug 26 23:35:08 EDT 2002 | Dave
Hey there, we use... Hmmms... we use a 6 hour paste I think from sci-tech or something that sounds like that, ws160a. as a rule what I paste up first thing, I want in the oven just after lunch, so about 4-5 hours. anything over that and your playin
Electronics Forum | Fri Sep 13 14:37:24 EDT 2002 | norvica
I have an Altai mains adapter. Input 240v ac Output 3,4.5,6,7.5,9,12 v dc 300mA MAX It has a polarity plug where you plug in the lead. I want to run a 3v Fuji film digital camera. Do i plug in the plug so the + goes to the - or the + goes to the +
Electronics Forum | Mon Nov 25 22:08:05 EST 2002 | Ben
Thanks for the advise. I got the advise from my solder paste vendor to increase the time above melting point for flux outglassing to escape. I tried but no big help. For the moisture issue, actually I've try to bake both the PCB and components at 12
