Electronics Forum | Tue Aug 24 11:29:59 EDT 1999 | Gary Kemp
Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? Any help would be appreciated. Thanks.
Electronics Forum | Tue Feb 23 16:05:46 EST 1999 | Randy Haller
| What to look for that causes tombstoning and the corective action. | 1:check reflow profile 2:reduce pad size 3:reduce deposition of paste(stencil thickness/opening of aperatures) 4:Check components for solderability Good Luck
Electronics Forum | Mon Sep 17 10:09:45 EDT 2001 | martys
What variables that you have tested are sensitive to producing tombstoning defects and what advice can you provide to minimize them?
Electronics Forum | Mon Feb 18 08:30:28 EST 2002 | jax
Wolfgang, Billboarding is kinda like a tombstone. The part is just sitting on it's side instead of on it's end. There should be plenty of info on this in the archives under billboard and tombstone. Most likely cause is off center placement and ov
Electronics Forum | Thu Oct 31 12:40:44 EST 2002 | cbarnett
I have a production line that is running ceramic substrate's. The line begins having tombstone's when the outside temperature begins to drop. I have moved our nitrogen tanks to the inside of the building and this done nothing. Does anyone have any id
Electronics Forum | Wed Nov 06 01:54:03 EST 2002 | jason
You may want to check your stencil aperture design too. The base ball pad design worked fine to solve my tombstone problem.
Electronics Forum | Sat Mar 15 00:52:18 EST 2003 | Grant
Hi, We had tomb-stoning on a product, and it was quite severe. We eliminated it by reducing the amount of solder paste on the small passible component pads. We used a 5 thou stencil, with 20% reduction, and it eliminated the problem. Regards, Gra
Electronics Forum | Thu May 20 19:29:18 EDT 2004 | Neil D. M.
Hi David, Can you send me a copy of this article "Reducing The Tombstoning of Small Discrete Components". Thanks a lot.
Electronics Forum | Thu Jul 15 14:01:15 EDT 2004 | nanref
WERW HAVING PROBLEM IN OUR PRODUCT SINCE WE STARTED USING A LEADFREE SOLDER PASTE..REJECTS OF TOMBSTONING IS SO ERRATIC...HOPE YOU CAN GIVE SOME INPUTS HOW TO CONTROL THIS..WHAT IS THE POSSIBLE CAUSE?THANKS
Electronics Forum | Thu Jul 15 15:37:29 EDT 2004 | davef
Get started by searching the fine SMTnet Archives. We love talking about tombstoning and solderballs. Good luck.
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