Electronics Forum | Wed Jun 06 21:19:41 EDT 2001 | davef
Consider running two sets of stencils and washing every four hours.
Electronics Forum | Mon Apr 02 17:16:22 EDT 2001 | kward
Try IPC-7095. It is not free , but discusses in-depth Design and Assembly Process implementation for BGAs. Website is ipc.org
Electronics Forum | Tue Jun 05 16:40:46 EDT 2001 | kerryn
Thanks Phil. However, my objective is to identify stencils that are not 100% clean prior to sending to inventory. I want to catch it before the solder paste has a chance to dry and harden in the apertures. Kerry
Electronics Forum | Tue Jun 05 14:38:55 EDT 2001 | pteerink
You would be better served to check your print quality as you run. Any problems caused by dirty stencils ( plugged aps etc ) would show up right away as a defect. Search the forum for more on this subject. I seem to recall the same subject coming up
Electronics Forum | Tue Jun 05 20:45:54 EDT 2001 | davef
So, yer lookin' to detect a ~25um glob on the wall of the aperture on yer stencil, eh? Why not wash your stencils before you put them away? That's what we do. Give 'em a quick looksee, then rack 'em, if they're clean. Give 'em anudda looksee befo
Electronics Forum | Thu Jun 07 16:33:22 EDT 2001 | davef
I too know of no product like you desire, but I have a lead for you to follow that might get you further than you're getting now. Call Lumonics [Lumonics, 130 Lombard St, Oxnard, CA 93030 805.485.5559 fax3335 http://www.gsilumonics.com]. They ma
Electronics Forum | Tue Apr 03 01:37:54 EDT 2001 | philipreyes
60% 36% 0f ball area >36% Class2 Accept Reject 45% of ball diameter >45% 20.25% of ball area >20.25% Class3 Accept
Electronics Forum | Tue May 28 13:46:27 EDT 2002 | Yannick
Hi, I know that this topic have been discuss before but I would like to know what kind of equipement do you use to check your BGA and to rework it? What should I look for before buying something. Some people said that is not a good thing to
Electronics Forum | Thu May 30 10:31:03 EDT 2002 | robbied
Hi Yannick. This is an issue that we are just recently getting into but here is some ifo that I have gathered so far. I have seen/ used 2 different rework machines. The one we have bought is a 'PACE TF2000' which was at the lower cost end of the mar
Electronics Forum | Wed Dec 01 15:53:59 EST 2004 | davef
uV light inspection indicates the "completeness" of coverage, but provides no measurement of coating thickness.
Our Company handle AOI (Auto Optical Inspection) and SPI (Solder Paste Inspection) Machines.
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