Electronics Forum | Thu Jun 02 06:23:40 EDT 2011 | alcatel
1 chip has 2 solder pads....and both pads definitely has solder.... im not getting what you are trying to say.
Electronics Forum | Thu Jun 02 10:54:12 EDT 2011 | davef
Al: We agree with AVFOM. You have a different problem than solder paste mesh selection. Most often, tombstoning occurs when the wetting forces on the two pads are unequal. Examples of things that can cause this are: * Pads are different * Board pad
Electronics Forum | Tue Apr 09 05:36:27 EDT 2002 | lhudson1
Silver in the paste is present to minimise any negative effects of silver in the pcb finish or component terminations. 2% Ag prevent silver leaching thus giving a more reliable joint.
Electronics Forum | Mon Jul 26 16:46:40 EDT 2004 | Frank
Can you use one of those hot-dog rollers (cookers?) you see in the corner convenient stores to keep the paste tubes moving to eliminate the separation? Ya know, the cookers with the week old hot dogs on it that are all shrivelled up?
Electronics Forum | Mon Sep 13 18:34:31 EDT 2004 | russ
Use Water soluble if you can, if not I would try the Indium SMQ NC paste, this residue stays soft. I would also change ICT probes to the "drill type". Russ
Electronics Forum | Thu Oct 27 05:07:04 EDT 2005 | milroyperera
Thank you, I think that`s a good strategy, what are the spec ifications of the softner? Is this normally available with the paste manufactureres? Thanking for further infos...
Electronics Forum | Thu Dec 08 17:41:55 EST 2005 | Mike
YIKES! Using a micowave to warm a tube of paste has "evil" written all over it.
Electronics Forum | Tue Jul 19 08:38:23 EDT 2011 | cecastel1510
Basically the main contribuitor is when we need to stop production, ie on weekends, or due to some material shortage on line, we move paste to a different line, but in the case of weekends and stop of production, we usually throw it away. Thanks
Electronics Forum | Wed Jul 28 07:59:50 EDT 2004 | cyber_wolf
Ken, With all due respect: Surface mount is surface mount. Whether you are placing 0201's, or PLCC84's the basic concept is the same. So I would surely hope that for the most part my process is transferable. I guess I was too broad when I said "we n
Electronics Forum | Thu Oct 27 05:51:17 EDT 2005 | pavel_murtishev
Good day, Search the net with "Solder paste softener", or check the links below: *Malcom http://www.malcomtech.com/products_sps.html *Japan UNIX http://www.japanunix.co.jp/ju_en/products/UM-103.html *Genitec http://www.genitec.com.tw/gam-60-e.htm
