Electronics Forum | Fri Jun 25 08:38:37 EDT 2010 | mun4o
Thanks, Dennis. That is a good idea, but I have problem :) - our logistic department lookig for cheap components...What other mnfg of cap you use? Regards,
Electronics Forum | Mon Jul 12 00:23:02 EDT 2010 | leadthree
I had cracking caps from the ICT and a variation in the length of the probes (due to wear and tear) that press down the PCB. That put lots of mechanical stress on the PCB. So have also a close look at the ICT, or another other test fixtures you use.
Electronics Forum | Fri Jun 25 14:49:43 EDT 2010 | patrickbruneel
Just skip the squirt bottle and your problem is solved. Cored solder has enough activity for proper wetting. When occasionally extra activity is needed use a fluxpen.
Electronics Forum | Tue Jun 29 11:46:36 EDT 2010 | davef
Prins: Everyone has equations. Here's one some people use: False call rate = [Number of defective boards, but good at inspection]/[Total number of boards produced] Why don't you ask the people [that calculated the numbers that confuse you] how the
Electronics Forum | Thu Jul 01 03:36:23 EDT 2010 | sibbe
Dean, As u use intelligent feeders, isn't it possible to let them count the mispicks as well? On our Samsung machines it counts the mispickes, but we don't have intelligent feeders. I could imagine the system of counting mispicks could be connecte
Electronics Forum | Fri Jul 02 04:06:20 EDT 2010 | dan_ems
That depends what SMT machines you have. We use the same fiducial mark like in this standard and works fine every time.
Electronics Forum | Thu Jul 08 23:46:21 EDT 2010 | rdoss
I have this same problems on the flex i use, most of which has an ENIG or immersion silver finish. About the only thing I know to do is have your supplier package it in a vaccume seeled bag to keep it from oxidizing. Otherwise you end up having to
Electronics Forum | Mon Jul 12 04:52:50 EDT 2010 | cksam
Thanks for the information about the reflow profiling its really useful for me to set up my own profile.
Electronics Forum | Tue Jul 06 13:26:24 EDT 2010 | bgaguy
I am looking to make a large purchase from UNI-SMT in Korea. Has anyone every bought a machine from them? How was their service? Did they support your issues. Please let me know. Thanks, William
Electronics Forum | Wed Jul 14 16:59:52 EDT 2010 | swag
Solder paste on the pads will keep part aligned. If you do not use paste, you will need to apply tacky flux. You should not run without one or the other.
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