Electronics Forum | Tue Apr 09 16:19:37 EDT 2002 | Peter L.
Has anyone built using the ALIVH PCB (0402, 0.8mm pitch uBGA) on the SMT line? I would like to know any process issues (paste printing, p&p, reflow) related to processing this pcb. Specifically, what type of solder paste was used (no clean) and wha
Electronics Forum | Fri Jul 28 09:03:23 EDT 2006 | nodlac
Lets not forget Chemistries... Pastes, flux, solder, glue, underfil, Mask. Someone with manufacturing experience. Cant forget Soldering irons and rework oh oh...and an X-ray.
Electronics Forum | Thu Sep 10 15:06:11 EDT 2009 | dyoungquist
My guess is that he is talking about the gold plated pads not fully wetting with solder. We have seen this on some of our ENIG boards with the gold still showing at the far corners of the rectangular pads. Not knowing if this is hand soldering or p
Electronics Forum | Fri Jul 28 10:34:14 EDT 2006 | razor9114
Don't forget about Paste height measurement, conveyors, Aqueous Cleaner, Selective Solder machine and possibly an Ionic Tester
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 | 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
Electronics Forum | Fri Mar 07 14:52:09 EST 2003 | caldon
Any company reclaiming desired metals will be interested. Some of the companies also take used PCB's for the metal content. It is not very profitable but does help. Metal reclaim companies can be found on the net. One company that might be interested
Electronics Forum | Thu Feb 24 16:08:54 EST 2000 | Gary
I have the situation where we may need to use a variety of reflow temperatures. It seems that the design engineers want us to try a variety of "unspecified" pastes on the products. For example, the first PCB would be assembled using a higher temperat
Electronics Forum | Thu Feb 24 16:08:54 EST 2000 | Gary
I have the situation where we may need to use a variety of reflow temperatures. It seems that the design engineers want us to try a variety of "unspecified" pastes on the products. For example, the first PCB would be assembled using a higher temperat
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
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