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Electronics Forum | Mon Apr 01 20:33:30 EST 2002 | davef
Regarding your underfil ... * What material did you use as an underfil? * What machine and technique did you use to apply the underfil? * What type of component were you underfilling? * What was the end-use environment?
Electronics Forum | Sat Nov 12 07:04:06 EST 2005 | davef
Eric C: What have you found?
Electronics Forum | Tue Nov 08 04:11:34 EST 2005 | Eric C
I am trying to find out if there is any solvent for underfill material that has hardened/cured. Regular/routine maintenance of our dispenser units requires thorough cleaning oftentimes scraping is done for material that has hardened. Any inputs would
Electronics Forum | Tue Nov 08 20:20:32 EST 2005 | davef
Necessary tools are: * Chisel * Ball peen hammer After you buy two new nozzles, keep one in a baby food jar filled with your underfill suppliers recommended solvent for half the shift. At the break, swap the dirty nozzle on the machine with the cle
Electronics Forum | Tue Nov 08 16:25:48 EST 2005 | Erik
I've found that Zestron HC works very well for breaking down all SMT adhesives. That's what our machine manf. recommends.
Electronics Forum | Fri Nov 11 09:41:12 EST 2005 | Eric C
Thanks for all your inputs. As I read through your responses, and through my research on the web, I have learned there are so many options to try and evaluate. The material we are using is loctite FP4531 - a snap cure flip chip underfill. Loctite ha
Electronics Forum | Tue Nov 08 09:04:30 EST 2005 | russ
What does the Mfgr. of the compound say? It is hard for anyone to help you unless you tell us what you are using.
Electronics Forum | Thu Sep 21 08:29:57 EDT 2000 | Dave F
Is this underfill reworability an issue with the underfill material or you rework machine?
Electronics Forum | Mon May 18 08:59:41 EDT 2009 | ozgurv
Dear All, Does anyone on the forum have experience with underfilling process of bga? We have a component with 0.5mm bga on one of the new products. Customer wants this component to have an underfill. Questions - 1) which kind of epoxy or chemica
Electronics Forum | Fri May 22 16:00:54 EDT 2009 | pjc
Henkel- Hysol seems to be the most popular material that I see: http://www.henkel.com/cps/rde/xchg/SID-0AC83309-B331D246/henkel_com/hs.xsl/12169_20090505-henkel-launches-next-gen-underfill-20681_COE_HTML.htm As far as application method, its all ab
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