Electronics Forum | Tue Apr 02 11:21:46 EST 2002 | BTaylor
davef I assume this question is for my reply and me. We used a dexter\hysol underfill and a Camalot 5700 to dispense.Single line technique next to a small IC with 14 bumps around the perimeter.The conformal coating was applied with a small brush aro
Electronics Forum | Tue Apr 02 22:52:38 EST 2002 | davef
Tks BT Can't be many places tougher than automotive, 'cept maybe oil field, down pipe. We use Dexter Hysol flow underfills for both 1 thou and 3 thou gaps, but they wouldn't come close to filling under a BGA. Most BGA are sitting about 16+ thou fr
Electronics Forum | Thu Mar 28 10:11:00 EST 2002 | cyber_wolf
I use a .059" copper clad sheet of FR4 that I bought from one of our board houses. It has not started to delaminate yet, and it has been through our ovens several hundred times. I am not sure what the life expectancy of a thermo-couple is. I am not 1
Electronics Forum | Sat Mar 30 05:51:34 EST 2002 | bayanbaru
We are using barcodes but we still end up with wrong parts. Apparently some operators fail to scan the reel. We are pretty strict on this, we even issue 'warning letter' to operator for failing to scan. We see some reduction in wrong parts but not to
Electronics Forum | Mon Apr 01 13:11:33 EST 2002 | BTaylor
I would like to know if this group has any preferences to any capacitor manufacture. Any good or bad experiences with certain companies, we are going through some issues. This group has many years in this field and I would like to hear your feedback
Electronics Forum | Thu Apr 04 03:07:48 EST 2002 | ianchan
In my own humble opinion, mebbe we should change the 30-days ADVANCE notification, into a WITHIN 30-days notification after commission of the ECN change? On retroflect, bet all you guys are glad you are all using fake names and abbreviations in this
Electronics Forum | Fri Apr 05 17:46:06 EST 2002 | franciscoioc
I own 3 CS-600 locator machines and need to calibrate one of them but I don't have the calibration grid.I contacted CONTACT SYSTEMS the manufacturer and they said they don't support this machines any more. Does any one have a calibration grid for thi
Electronics Forum | Fri Apr 12 15:48:33 EDT 2002 | jersbo
SPC for each assembly(I use C(for board defects)NP(for unit defects) at the end of reflow to determine process capabilities determine Control limits. Once control limits are set, inspectors stop the process until out of control limit is addressed and
Electronics Forum | Thu Apr 11 10:14:05 EDT 2002 | BTaylor
We use the ASC vision master 212, our customers wanted a height and volume measurement rather than an inspector doing a visual. We have added this machine to our process, checking height on many preprogrammed locations then this generates a X bar and
Electronics Forum | Thu Apr 11 11:32:23 EDT 2002 | barryg
Hello everyone. We are interested in doing double sided surface mount. What methods are there for doing this. I know you can wave solder some smt components, but what are the limitations. Is there a method of doing this that uses 2 different solder p
