Electronics Forum | Thu Mar 28 13:19:14 EDT 2019 | davef
There is no industry standard for BTC stand-off height. "IPC-7093A Design and Assembly Process Implementation for Bottom Termination SMT (BTC) Components" just finished "Final Draft for Industry Review" in December 2018. It mentions stand-off height
Electronics Forum | Wed Jul 03 09:47:39 EDT 2019 | SMTA-Pat
We have seen that vias included in the PCB under the thermal pad will give less voiding.
Electronics Forum | Tue Mar 26 10:30:28 EDT 2019 | pavel_murtishev
Hello, Could you please tell me if there is any industry standard specifying QFN to PCB standoff after soldering? Is any gap allowed? Browsing IPC-A-610, I have found nothing. Any input would be appreciated. Regards
Electronics Forum | Fri Mar 26 00:33:32 EST 2004 | alwil
I'm keen to find out more about the SAWA cleaner. What type of solvent is being used. Does anyone use water or any other enviromentaly friendly agent. Is the result with glue stencils good.Is this a messy machine to use. Any feedback would be good. I
Electronics Forum | Thu Mar 04 12:34:48 EST 2004 | cyber_wolf
I know that many smaller companies clean their stencils the same way you do. If you get good results cleaning your stencils this way then I would say stick with the alcohol/wipe method. Take your stencil and put it under a microscope.If the aperture
Electronics Forum | Tue Aug 26 03:14:27 EDT 2008 | zpivy
Outlook for a software? PCB Gerber File Auto Checking System(http://www.pcbpartner.com) It can translate Gerber files into standard Specifications fleetly and automatically so as to help users improve the checking efficiency and reduce the cost gr
Electronics Forum | Thu Mar 04 10:45:19 EST 2004 | Robert
My company is relatively small but we have a SMT line. However, we don't have a stencil cleaner so I resort to a spray bottle of denatured alcohol, wiping it with a cloth and then using a toothbrush to brush the apertures. Finally another wipe down a
Electronics Forum | Mon Jul 31 01:24:28 EDT 2006 | fastek
If you ask me, these were the two issues that contributed the most to the decline in PCB Assembly Manufacturing in the US...for that matter the electronics industry in general. 1) The obsession of management to please shareholders which was driven f
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 20 23:37:48 EDT 2018 | pcbindex
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