Electronics Forum | Wed Sep 20 19:34:13 EDT 2000 | Dave F
Congrats. You now control the source of almost 70% of the defects of your SMT operation. There is a neat series of presentations on printing, each year at SMI. One of the best of the SMI series was in 1997, because presenters used a common board
Electronics Forum | Wed Sep 06 11:18:52 EDT 2000 | Chris May
Randy, I have been with my present company about 14 months and my first and ongoing task is to improve 1st time yield rates at ATE. Upon examination of the failures (14 months ago)there were cases of IC legs being physically wider than the pads on
Electronics Forum | Mon Aug 28 18:57:41 EDT 2000 | Earl Moon
Steve, This is a good, well repeated, not identified by IPC yet issue. I, and some others in industry, for years have proven and recommended smaller pads for various devices. I, and some others in industry, use 0402 pads for 0603 device types. IPC o
Electronics Forum | Tue Aug 29 05:58:28 EDT 2000 | Chris May
Andy, I have been "evaluating" some AOI systems. However, some of these are actually SAOI (Semi Automatic Optical Inspection), which is not a problem if that is what fits your process and budget. You can buy a high end system complete with many cam
Electronics Forum | Thu Aug 24 12:35:30 EDT 2000 | Wolfgang Busko
The dilemma with this is that the search in the archive is often not that enlighting as someone might hope. Fact is that each new question (and the answers as well) on old topics adds to the archive making it not better. Well, and than look for the r
Electronics Forum | Fri Aug 18 05:05:11 EDT 2000 | Wolfgang Busko
Not that I have any experience with the proflow system but here are some words from a well respected former contributor on this forum who asked me to pass this one along. "About DEK's Pro Flo system: Advantages considerably outway disadvantages. Sp
Electronics Forum | Wed Nov 01 12:10:20 EST 2000 | Jeff
charles, i can appreciate the hand held "reel to reel" scanner as a good solution that is very cost effective. during my smt supervision days we had a number of part loading checks. 1. load plan check, 2. scan check, 3. reel to reel manual check.
Electronics Forum | Mon Aug 14 18:24:36 EDT 2000 | Dave F
James: Here's a starting point: 1 www.wwnet.net/~rkroy/wp-inb.html 2 www.sas.com/otherprods/jmp/Home.html 3 www.micromeg.com/ 4 Boeing SQC (avail. from Boeing for $100) is a good little package for DOS machines. 5 For Windows, SPC KISS from Air Aca
Electronics Forum | Wed Aug 09 22:11:46 EDT 2000 | Dave F
Mark: The best routing of test vias for BGAs is to keep them far away from the device. We route test pads for the outer two rows of balls and use vias as test pads for the inner rows of balls. Your bottom-side layout is fine. Yes, on the top-side
Electronics Forum | Mon Aug 07 10:22:13 EDT 2000 | genglish
Ramon, I have had experience in the problems you are witnessing. The problem can relate to a number of factors. Obviously the printing process is the first place to start your investigations, try looking at the stencil apertures for bleed under the
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