Electronics Forum | Wed Mar 23 11:08:36 EDT 2011 | davef
There is no such standard, nor should there be. The important thing is to make good solder connections. That's IPC standardization focus, defining good results of manufacturing process. The approach that you take in developing the process of making g
Electronics Forum | Thu Mar 05 13:17:19 EST 1998 | Justin Medernach
| Hello everyone! | Does any know anything about bare board size variations? | Is there a spec. or tolerance? | I'm running small lots of boards and during the screen printing process | I find that I cannot paste each board perfectly.I've tried other
Electronics Forum | Thu Jul 20 13:08:35 EDT 2000 | Bob Willis
The solder paste formulation is different 63/37 is a tin lead alloy so t here is one difference from a lead free. Yes you can get no clean lead free products but if you compare the amount of visible residues they will be normally higher. So far most
Electronics Forum | Fri Aug 22 00:25:20 EDT 2003 | mantis
Kenny, Out of curisoty why do you need to paste the vias.Is it due to contact reliability at test.Can these vias not be soldered during wave process (if any).Can the Style of probe used in the ICT test fixture not be changed to accomodate these unsol
Electronics Forum | Tue Aug 26 21:12:24 EDT 2003 | iman
depends if your water wash process is manual or automation? important is the water residue inside the via holes is adequately blown out. As long as the water-flux residue is out, testing down the line should not be a issue, at least from theory and o
Electronics Forum | Thu Mar 05 23:33:53 EST 1998 | Ron Costa
| | Hello everyone! | | Does any know anything about bare board size variations? | | Is there a spec. or tolerance? | | I'm running small lots of boards and during the screen printing process | | I find that I cannot paste each board perfectly.I've t
Electronics Forum | Fri Mar 06 10:30:46 EST 1998 | Ron Costa
| | | Hello everyone! | | | Does any know anything about bare board size variations? | | | Is there a spec. or tolerance? | | | I'm running small lots of boards and during the screen printing process | | | I find that I cannot paste each board perfec
Electronics Forum | Thu Oct 08 07:29:51 EDT 2009 | andrzej
We have 250x340mm panel of PCBs. Stencil for glue would be 0,3mm with about 80 holes mostly for chip components. Our MPM printer at standard set, prints paste on 1 panel at 40-50sec. I need general information if printing glue is faster or slower p
Electronics Forum | Tue Jul 24 10:29:10 EDT 2007 | ed_faranda
Is there a reason why you want to wash the board before wave?!?!? What is your process flow? I run bottom side of my boards first, then top just to make it easier to setup (easier to put those support pins around those smaller components). But,
Electronics Forum | Wed Apr 08 01:43:49 EDT 1998 | Clint Meech
We currently screen print glue for our bottom side components. We are looking to get the bottom side of one our boards screened with a solder resist (to cover mounting holes, etc, for the wave-soldering process). This would create an uneven surface
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