Electronics Forum | Mon Oct 06 12:37:18 EDT 2003 | ramanandkini
It was a nice discussion. What I did here was a thermal shock test 1 hour@ +90 deg.c and immediately 1 hour @ -40 deg.c. The second test I did was a high humudity test for a week. After each test, I carried out a peel test with scotch tape. Those bo
Electronics Forum | Fri Oct 03 08:42:36 EDT 2003 | m4040
This is probably the most advanced machine that MPM has EVER offered. It operates in a Windows 2000 environment, which means plug and play networking. Both setup for new boards and 2D are VERY easy to set up. Most new board programming can be done of
Electronics Forum | Fri Oct 03 01:03:15 EDT 2003 | Truett H.
I would discourage the use of city water at all - where rinsing electronic parts is concerned, it contains too much contamination. If practical, route DI water to your first tank and implement some aggitation (either nitrogen bubbles from the bottom
Electronics Forum | Fri Oct 03 09:00:18 EDT 2003 | davef
EIA standard packages have a variety of L/W proportions. EIA||Dimension mm (LXW)||Proportion (L/W) 0201||0.6X0.3||2 0202||0.5X0.5||1 0303||0.8X0.8||1 0402||1.0X0.5||2 0504||1.25X1.0||1.25 ||1.4X1.4||1 0603||1.6X0.8||2 0805||2.0X1.25||1.6 1111||2.8X2
Electronics Forum | Wed Oct 08 08:30:21 EDT 2003 | christ
Hi Dave: I'd second you.Thanks for your effort and can you give me the hints about correct reflow profile for soldering PCBA.I doubt there was something problem during reflow,I found there were some flux residue left on the PCBA after reflow by th
Electronics Forum | Mon Oct 06 11:13:32 EDT 2003 | marmotzj
Dear All, I'm encountering a problem on mounting Intel E7501 and P64H2 FC-BGA chips. After the SMT process, these two BGAs were defected. Both had power-to-ground short circuits on the die package itself, and also the die resin had cracking tracks
Electronics Forum | Tue Oct 07 14:23:37 EDT 2003 | Adam
The Omegameter (or Ionograph) detect contamination by measuring the conductivity of the solution used to extract the board. This conductivity number reflects the sum of all of the ionics in the extraction solution. Unfortunately, we can't sort out th
Electronics Forum | Thu Oct 09 13:14:20 EDT 2003 | MA/NY DDave
Hi If I read things correctly you have quite a problem. I am inclined to scrap the entire LOT. I will give some hints at what to do as others have, yet you might want to bring someone in if the loss in revenue is high. I don't know your lot or run
Electronics Forum | Tue Nov 04 19:34:27 EST 2003 | gregoryyork
Blimey that's a problem and a half. Water Solubles will look completely different residue wise than No Cleans, pending age and solids contents No Cleans will go white powdery - watersolubles will stay oily Alternatively process reworked PCB's through
Electronics Forum | Mon Oct 13 14:30:56 EDT 2003 | jsherrow
Our customer is starting to see some solder joint > failures during their extensive testing > proceedures. Specifically with an SMD/DIP device > that has a very small foot in relationship with > the pad on the PCB. (By SMD/DIP device I mean a >
