Electronics Forum | Tue Sep 26 16:44:18 EDT 2006 | df
All, We have a board that has failed at burn in. There is a 672 BGA on the board. When the test guy presses down on the BGA the board will pass ! What am I looking at here? Board finish is ENIG - could this be black pad / what should I do to diagn
Electronics Forum | Mon Oct 02 19:04:53 EDT 2006 | DC
We had a issue on the SBGA and found stress built up at the corner of the SBGA after cool down to room temperature. It is confirmed by the warpage analysis. I expected that the stress caused by the heat spreader and the epoxy to the copper frame. O
Electronics Forum | Mon Dec 25 12:17:57 EST 2006 | KEN
first, does the recipe have the heat and conveyor boxes checked? If no then it does nothing. second, have you pressed the round green switch? third, are there any alarms in the alarm box? Do you have a controller link fail? Verify the cable is p
Electronics Forum | Fri Feb 02 21:31:38 EST 2007 | bill_gates
Hi, I am considering to use pressfit D-Sub and DIN connectors on a backplane. The IPC guideline does just cover pin protrusion for soldered pins, which have to be flush with the board as a minimum acceptable design. Yet, if the backplane may be thic
Electronics Forum | Thu Feb 08 00:40:37 EST 2007 | Scott
I think that as long as the compliant portion of the pin is completely in the board, pin protrusion should not make any difference. I have seen some large Aerospace companies internal specifications and the two requirements seem to be that the compli
Electronics Forum | Mon Feb 12 01:19:27 EST 2007 | Wayne
the center part of the BGA balls may not fully reflow or melt and cause BGA tilt, not functioning working (only press then work) and etc..... the simple way to solve this issue is to use low temperature solder paste, it can melt in between 220 to 225
Electronics Forum | Mon Mar 19 23:35:10 EDT 2007 | bvdb
Hi Pete, I was using only the small and medium nozzles but it happens on both nozzles. No error message unless the delay went past about 5 seconds then a Q servo error and machine stops. Pressing reset and run enables it to continue although it th
Electronics Forum | Mon Oct 08 17:58:07 EDT 2007 | actech
I have a CSM 84 that preforms origin and manual opperation. The Comp. and Brd. DATA is all present, However when I try to place in run mode the Lines of the program do not load and I get an Error. and when I press the reset The program lines do not l
Electronics Forum | Sat May 03 08:24:36 EDT 2008 | davef
Don't ask us. 70% of the people posting on this forum are contactors. Suggestions are: * Read and commit to practice: "Cold Calling Techniques" Schiffman, S; Adams Media 1999 [1580628567] and "Little Red Book Of Selling" Gitomer, J; Bard Press 2004
Electronics Forum | Tue May 06 22:15:06 EDT 2008 | davef
We agree. We consider mounting holes and press fgit socket pads to be "critical contact areas." Consider taking steps to prevent the production of such solder splats on your gold to help elimate gold rework. We discussed this previously here on SMTn
