Electronics Forum | Tue Feb 22 12:42:53 EST 2005 | griinder
I was curious if anyone else has ever added water soluble flux to water soluble solder paste that is only a few days old, but is too dry to use in production. Also, are there any known bad side effects to this process. I have already searched the arc
Electronics Forum | Thu Feb 07 05:24:16 EST 2008 | muarty
I would advise that you clean the stencil thoroughly at least every 4 hours, also though it is worth cleaning the stencil top and bottom after any breaktimes. To avoid solder paste drying off in stencil apertures. Best piece of kit I've purchased was
Electronics Forum | Sun May 05 17:27:32 EDT 2013 | davef
Here’s a Tweet that I made here [http://blogs.smtnet.com/smt/smt-placement/ipc-apex-2013-my-tweets/ ] … Hisco’s computer controlled frig for managing solder paste inventory … way more sophisticated than that old white frig. Davef I receive no benefi
Electronics Forum | Thu Jan 03 02:26:12 EST 2002 | arzu
Hello, I need to know the volume spread of solderpaste after screenprinting fine-pitch paste using a nickelformed screen. It is the end-result that counts , so of course the spread of metalcontent in the paste is important too. Can anyone tell me som
Electronics Forum | Wed Sep 23 12:16:17 EDT 2009 | davef
The US EPA has a Toxics Release Inventory (TRI) program. They may have some information on paste wastage estimation for leaded pastes.
Electronics Forum | Tue Apr 13 14:14:59 EDT 2004 | russ
I have actually printed this same condition with type 3 paste Alpha WS709. I posted this for discussion and cannot remember what I called it. We did need to clean the stencil after every three prints. I did not check volume on these locations but
Electronics Forum | Thu Apr 26 11:40:10 EDT 2007 | CL
Good Morning, We have a 3D solder paste inspection machine. We purchased it on a recommendation from a consultant. We are a CM high mix low volume. The President of my company has attended some seminars and meetings where it was conveyed to her that
Electronics Forum | Thu Dec 16 18:36:01 EST 2004 | mattkehoe
We use water soluble solder paste. When it gets a little dried out, can we add something to rejuvenate it? Liquid flux? We do not place components, just print and reflow the solderpaste so solderballs, spattering, and other issues like those are of
Electronics Forum | Tue Feb 22 17:57:32 EST 2005 | Austinj
Most solder paste has a shelf life of 1 week at room temperature after opened, if resealed at the end of the shift/day. Most shelf lives are 4-6 months at 40F (refridgerated) or 1 month at room temp (unopened/sealed). Recommended stencil life is appr
Electronics Forum | Wed Jun 01 07:34:19 EDT 2005 | davef
It's unusual to use a horseshoe shaped pad for a 0805. Commonly when people want to reduce the paste volume to reduce solder balling, they print a "home plate" aperature. We print paste 1:1 with the pad. �IPC-7351 LP Wizard� is the library mainten
