Electronics Forum | Fri Jan 28 04:03:51 EST 2011 | grahamcooper22
Print then dispense in the areas you need extra paste. Why can you not use a stencil which has areas etched away around component patterns to thin the stencil down....for example a 150 micron thick stencil etched to 120 or 100 microns in specific are
Electronics Forum | Tue Feb 17 01:12:52 EST 1998 | J.H. Kim
In solder bumping in flipchip technology by splder printing, the precise control of solder volume and height is very difficult. Therefore I'd like to know the solution of this problem. Thanks
Electronics Forum | Tue Apr 13 14:56:51 EDT 2004 | russ
in a thread titled ".5mm bga" there is a reference to a paste by alpha that is no-clean and is supposed to be made specifically for this situation. I suppose that increasing the pad dimension to .012" is out of the question? Russ
Electronics Forum | Fri Dec 17 10:24:23 EST 2004 | rlackey
Hi Matt, What printer are you using? you may be able to get an envronmental unit for it to keep the paste cooler & at the right humidity for longer, thus extending it's effective window. Cheers, Rob.
Electronics Forum | Thu Nov 03 09:20:29 EST 2005 | russ
Unforunately, the only one who can give you that answer is the manufacturer. They are the only ones who know what is in their paste and how it reacts to different situations and conditions.
Electronics Forum | Sat Feb 02 08:36:22 EST 2008 | davef
As a minimum, we clean the printer setup every shift change. Probably the best advice on this is from your paste supplier.
Electronics Forum | Fri Apr 04 14:49:51 EDT 2008 | tombstone
Flux seperation is a common problem observed due to expiration of paste. The symptom is a yellow layer of flux when you open the jar. Excess flux separation will cause priting problems such as smearing and slumping.
Electronics Forum | Fri Mar 29 10:11:02 EDT 2019 | cyber_wolf
“For a number of years now, work has been proceeding in order to bring perfection to the crudely conceived idea of a transmission that would not only supply inverse reactive current for use in unilateral phase detractors, but would also be capable of
Electronics Forum | Mon Apr 12 16:03:40 EDT 2004 | swagner
Can you go to a .004" stencil?
Electronics Forum | Wed Feb 23 15:06:05 EST 2005 | Zlatan
Would you be able to share with me, what specific abnormal chemical reaction could happen? Thanks
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