Electronics Forum | Thu Oct 22 11:11:58 EDT 1998 | Hon
Dear all, What are your views on reworking BGA's? I mean, with the BGA going through reflow temperatures four times or more, and with a manual reballing process, wouldn't it raise up a few reliability issues? Would you consider not doing rework on
Electronics Forum | Sat May 09 12:18:50 EDT 1998 | Bob Willis
Two charity reports on the above subjects are available from the SMTA office in the USA. All the money raised from the sale of these reports is going to the Charles Hutchins fund. If you are interested call your local SMTA Office for details.
Electronics Forum | Tue Aug 07 20:53:14 EDT 2001 | davef
slowing-down the conveyor to allow the solder to heat these balls more. But that may not be the answer, because if the flux is exhausted, more heat will not help. Then if the flux is exhausted, the answer is to crank the belt. Two different answer
Electronics Forum | Fri Sep 28 10:36:34 EDT 2001 | gdstanton
Folks, We completed our run of these boards yesterday and indeed the problem was resolved by modifying the reflow profile. Thanks to all who responded to this posting. Cheers!
Electronics Forum | Wed Jan 30 12:37:49 EST 2002 | jax
nifhail, In a nutshell: Vapor-phase reflow is a process that uses a fluid with a selected boiling point. As condensation of the hot vapor occurs on a cool assembly the assembly's temperature is rapidly raised to match the temperature of the vapor.
Electronics Forum | Sun Sep 15 08:41:07 EDT 2002 | davef
I agree with you Steve. I have tried to convince the fine folk at SMTnet about your very agrument for years. They listen, but are unmoved. I think they would be moved if we raised a stink about it
Electronics Forum | Mon Sep 16 10:41:19 EDT 2002 | bdoyle
That would definitely do it. We have thought about this a number of times as its been raised. The more people who are in support of it, the quicker it will happen.
Electronics Forum | Fri Feb 28 15:10:26 EST 2003 | Pauld
Dave, I raised this concern also. AMP claims that the tight fit in the wipe zone creates an airless joint that will not corrode despite the dissimiliar metals. DDave, thanks for the link.
Electronics Forum | Mon Jul 07 23:17:34 EDT 2003 | MA/NY DDave
Hi After reading the dialog I think you should send this to a lab that can do cross sections a little etching and raise the magnification. YiEngr, MA/NY DDave
Electronics Forum | Thu Feb 12 13:18:33 EST 2004 | patrickbruneel
Vinny, I agree 100%, raising the import taxes could resolve the $521 billion deficit the country has and make local manufacturing more attractive for investors. (But this is probably not sophisticated enough to implement) Patrick
