Electronics Forum | Mon Feb 18 22:05:58 EST 2008 | callckq
Dear All, What is the possible root causes of the dendrite growth? How long its take to cause this dendrite growth? Can dendrite growth cause electrical short? Is there any particular location on PCBA that dendrite tend to grow? Thanks, Sean
Electronics Forum | Tue Nov 29 14:57:45 EST 2011 | jlawson
Sorry on N2 and tombstone, many other aspects cause tombstones and n2 in itself does not cause tombstones. It can help make other bad variables tip over edge to cause tombstones more than with no N2. Get these right then N2 is not issue.
Electronics Forum | Fri Mar 16 07:46:56 EST 2001 | C. Robert Nelms
David Thanks for telling me about this web-site! Great site! I very much appreciated this message. To be honest, after reading some of the other messages here on this forum, I almost decided that this site was not for me. Seems like most / all o
Electronics Forum | Sat Sep 25 07:07:02 EDT 1999 | Brian
| I need a memory jog. What is the term for the growth of conductive contamination after a board is in storage or field? | There are several different mechanisms which can cause this. In reality, ionic contamination is the root cause for many of the
Electronics Forum | Wed Mar 21 01:19:29 EST 2001 | PeteC
We're watching more carefully at post-print and pre-reflow inspections for products with the gold finger contacts. Not 100% sure the cause. SMT line people suspect primary cause is improperly wiped stencil. Do you know any other possible causes? We g
Electronics Forum | Fri Oct 29 05:23:00 EDT 1999 | Wolfgang Busko
Hi Bart, that�s much to high. If that would happen to me my boss would tear my head off. For improving the yields you must find the cause for the soldering problems. What are the symptoms? What could be the cause for the symptoms? Could be design pr
Electronics Forum | Wed Oct 27 19:50:59 EDT 1999 | chris
Hi What is the possible cause of non-wetting of solder paste to the gold land pad. What we observed in the surface of the non-wet pad is an organic FM, and using FTIR we found out that it is a flux. It is possible that the cause of non-wetting is
Electronics Forum | Mon Nov 26 20:11:41 EST 2007 | shy
Yes, i'm agree with you davef but i'm not put the chipbonders onto pads. i'm put the chipbonders at the beneath component (center between both component terminals) which the idea is to hold the component during wave soldering which might cause the co
Electronics Forum | Tue Feb 19 08:46:06 EST 2008 | rgduval
The last time I encountered dendrite growth, it was within a component package. I believe we were experiencing it within a crystal. The root cause was water intrusion during in line wash. The component was supposed to have been sealed and safe for
Electronics Forum | Thu Sep 30 07:34:27 EDT 2010 | sibbe
Hi, We are having some serious issues with placing the Luxeon Rebels. The problem is caused by the components sticking to the tape. We don’t know what causes it, but I remember to have read something about components sticking to the tape on this For
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