Electronics Forum | Thu Feb 08 14:03:39 EST 2007 | dave
Hi All, What is the cause of BGA tilt ? I have a failed board and it seems to have approx 0.25 mm difference in height on one edge of the BGA to the other. It is notable under magnification. Is this caused by to much time above reflow temp or not
Electronics Forum | Thu Feb 08 14:15:45 EST 2007 | dwelch
Dave, I had the same problem in the past. Use fresh paste and a slightly higher profile. My guess is that you may not be completly reflowing. It worked for me. If that doesn't work you may want to check the bga itself, make sure balls are universal.
Electronics Forum | Fri Feb 09 08:45:31 EST 2007 | russ
Most likely either profile or I was thinking a cap! resistors are to thin to make the part stand up hehehe just a joke. Do not follow the advice of weighting part, that is ridiculous, poster of that, if you have never done BGA before please do not
Electronics Forum | Fri Feb 09 12:31:35 EST 2007 | realchunks
Ask Brain Toleno at "circuitsassembly.com/blog" He's a smart guy and works as team lead at Henkel Loctite. Just don't take him out for drinks.
Electronics Forum | Fri Feb 09 14:29:20 EST 2007 | dphilbrick
No, Muhammad is preparing for some type of trial, either a legal one or one by fire! These rank right up there on the absurdity scale. Got to be one or the other.
Electronics Forum | Fri Feb 09 09:23:12 EST 2007 | Adam
Hi Would anyone the what the solderjoint cleanliness requriements are, on an assembly which will eventually be operating in a vacuum environment ? Thanks in advance Adam
Electronics Forum | Fri Feb 09 12:28:16 EST 2007 | Snirk Prichards
Me thinks you is on to something. I like day way you tinks and would like to bring to honda plant.
Electronics Forum | Sat Feb 10 09:29:08 EST 2007 | davef
NASA requirements may be a good starting point http://www.hq.nasa.gov/office/codeq/solder.htm
Electronics Forum | Fri Feb 09 10:00:12 EST 2007 | patrickbruneel
Interesting BGA saga http://www.emsnow.com/npps/story.cfm?ID=24434 To be continued Patrick
Electronics Forum | Fri Feb 09 11:33:23 EST 2007 | samir
Patrick, the suspense is killing me. What happens next?? I can't wait for the "conclusion."
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