Electronics Forum | Fri Sep 03 14:20:38 EDT 1999 | David
| Could someone shares their experience on the causes of 'Open' in the BGA after reflow. | | You must have been in the same meeting I was in earlier today. We are currently having some opens on BGAs. The problem joints are all on the perimeter of
Electronics Forum | Tue Sep 24 12:58:27 EDT 2002 | dragonslayr
Although focusing on solderability may be the right answer, I wonder if you are satisfied that co-planarity is not the root cause. With random events of contact opens, this may be the case. Cleanliness of the stencil can also be a source of your pr
Electronics Forum | Mon Sep 23 22:31:48 EDT 2002 | davef
Comments are: * It�s interesting, but not surprising that your time above liquidous varies around the sides of this component. * You are correct in thinking that it is better to reduce than to increase the temperature differences around the component
Electronics Forum | Thu Jun 15 14:14:18 EDT 2017 | pfuhrman
I have seen a few references in this forum to an old study (1980s?) by Roger Wild at IBM. But I cannot find a published report or usable reference to one. davef mentioned the SMTnet archives as a possible source, but that has also been a dead end.
Electronics Forum | Wed Oct 03 17:52:37 EDT 2001 | mparker
I hate it when that happens. Usually I just buy a better brand of papers. Zig Zag works best. Of course, you gotta remove the stems and seeds, those are the most recurring sources that cause an open joint.
Electronics Forum | Mon Sep 09 17:45:33 EDT 2002 | slthomas
Around here that opens you up to some financial liability if ANY lead is found in the sewage, if they can't pinpoint the source. Every user over X lbs./month (dunno the specifics, just got this from our hazmat guy) is on the bubble for anyone else's
Electronics Forum | Tue Nov 06 10:28:58 EST 2018 | davef
Media Links IPC Global Insight This weekly electronic newsletter includes IPC news and multimedia information on manufacturing and management best practices and solutions, new technologies, standards, government relations and environment, health and
Electronics Forum | Sun Jul 06 08:23:05 EDT 2014 | sarason
There are a few Open Source projects for this sort of thing for instance http://hackaday.com/2011/11/30/openpnp-working-to-create-an-affordable-and-completely-open-pick-and-place-machine/ Also try my webpage it has some links to these and pther pr
Electronics Forum | Mon Jun 18 09:44:22 EDT 2018 | sarason
OpenPNP will not get you to your end goal. Dockerty electronics has an open source solution in Delphi that could be modified for our purposes. http://www.dockerty.co.nz/index.html Madell I believe have something in hardware with 5 feeders that wo
Electronics Forum | Wed Mar 28 14:36:52 EDT 2007 | mumtaz
Shame on you Chunks for not nowing who these people were! Next time check source before opening your mouth. Now we are stuck reading advertisments which everyone hates. Stupid!
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