Electronics Forum | Thu Sep 15 16:07:19 EDT 2016 | davef
In electronic manufacture, it's never good when "oozing" is part of the conversation. "Bridging" that's bad too. "Melting" sometimes good, sometimes bad. Got pix? How about some nice color pictures?
Electronics Forum | Thu Oct 28 13:36:14 EDT 1999 | Bart Smith
I am a design engineer and have a circuit board design with a 292 pin BGA on it. The board manufacturer is experiencing a failure rate of about 2.8% on the BGA device due to soldering problems. This is my first experience with BGA. How does the 2.
Electronics Forum | Tue Feb 12 04:07:29 EST 2008 | aj
Hi, Have you checked out the BGA datasheet and see what profile is recommended for the BGA ? I use OM338 and there are dozens of recommended profiles for the Paste but you have to consider the components aswell. You state your Peak temp which I w
Electronics Forum | Sat Sep 14 20:42:48 EDT 2002 | kenbliss
Hi Scott Thanks for your comments, you stated "The highest attributer was clogging apertures in fine pitch, resistor networks, and BGA, Micro BGA areas" was this do just to the size of the aperture or bad or old paste or debris from inadequate clean
Electronics Forum | Tue Jun 15 15:10:44 EDT 2004 | mrmaint
Looking for feedback on an Airvac DRS24C Bga rework station. Looking for both good and bad feedback. Users only please, no sales folks. Thanks MRMAINT
Electronics Forum | Fri Jul 16 11:04:03 EDT 2004 | Rush Fan
We are considering the purchase of equipment that would allow us to inspect beneath various components such as BGA's. Does anyone have any thoughts, good or bad, on the offerings of equipment currently out there on the market?
Electronics Forum | Wed Sep 15 15:16:29 EDT 2004 | davef
It's going to be tougher to get the recipe correct on his bad dude. [As you'd expect.] But to start with, you need to run a channel of your profile on one of the open balls of this particular heat sinked BGA.
Electronics Forum | Thu Jan 13 09:18:28 EST 2005 | davef
We agree that coating BGA solder balls with conformal coat is a bad idea due to differences between the z-dimension thermal expansion between the conformal coat and solder.
Electronics Forum | Mon Nov 25 00:45:35 EST 2013 | igorfo
Thank you for advice, But main concern how to detect the problems with BGA on SMT line, and how I can validate "good" or "bad" profile. PS: SPC said that process Cpk 2, temperature profile in the upper spec limit for TAL and peak temperature.
Electronics Forum | Sat Dec 03 16:26:40 EST 2005 | grantp
Hi, I have seen demos of these scopes, and don't think they really show you very much. If you profile your board right, and drill up to solder a thermocouple onto the inner balls of the device so you really know your getting a good profile, I don't
