Electronics Forum | Sun Sep 04 13:16:44 EDT 2016 | danhhunter
Is it possible and does any standard cover inspecting soldering joints through conformal coating?
Electronics Forum | Fri Feb 13 15:16:43 EST 1998 | Robert J. Clarke
Looking for studies that relate smt reliability against workmanship standards. For example does J-STD 001 level 3 indicate a high rel level than level 1. Thanks
Electronics Forum | Mon Sep 05 16:24:09 EDT 2016 | davef
inspect => conformal coat ... and standards are aligned with that philosophy. I can imagine doing a good job inspecting assembly after being coated with particular coating thickness, optical properties, lighting conditions. Ultra-thins are so thin
Electronics Forum | Tue Sep 06 12:41:52 EDT 2016 | kmclain
IPC J-STD-001 does not allow solder inspection to be combined with coating inspection for classes 2 and 3.
Electronics Forum | Thu Jan 30 01:38:22 EST 2014 | m_imtiaz
thank for good input, any documented standard available from any well known body (IPC standard)
Electronics Forum | Tue Jan 07 23:38:08 EST 2014 | m_imtiaz
want to know the tolerance the paste height in the solder paste printing. for example if stencil thickness is 7 mil, what will the acceptance level of paste height ( upper and lower) kindly share if any guidelines or formula for the same
Electronics Forum | Wed Jan 08 08:20:52 EST 2014 | emeto
To most of our boards I give 20-30% tolerance in both directions. From experience if you have big aperture on your stencil, the squeegee will scoop certain amount of paste from this aperture and you will see lower height. Depending on your board supp
Electronics Forum | Fri Jan 24 08:14:24 EST 2014 | davem
m_imtiaz, Over the last 15 years or so I've found that using the stencil foil thickness +2mils/-0mils has worked very well. For example, if you have a 5mil stencil thickness your upper control limit would be 7mils and your lower control limit would
Electronics Forum | Wed May 16 07:08:23 EDT 2001 | Michael Fogel
We are using press fit connector for some time without any particular visible problems, but still we need some kind of workmanship standard as a general guideline of what is wrong, acceptable and preferred levels for this job. Can someone direct me w
Electronics Forum | Wed May 16 14:09:22 EDT 2001 | davef
First thing I'd use is IPC-A-610C, �4.8.2 Connector Pins - Press-Fit Pins. Does it work in your case?
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