Electronics Forum | Tue Sep 09 09:25:29 EDT 2003 | james
What about making the customer drawing or parts > list with their rev as a part number on your > parts list? Example: (455556 rev X) would be a > part number on your parts list. What about keeping their revision as A, B, C and in your system it
Electronics Forum | Fri Sep 26 17:18:29 EDT 2003 | slthomas
See, I knew listing names was a mistake. Up comes someone you should have listed and you feel like a putz. :( Thanks Cal. It's not so much that I need to contact anyone. Just wondering where everyone went, mostly, but wanting to publicly thank som
Electronics Forum | Fri Oct 24 16:59:51 EDT 2003 | Ming Diaz
Wish I had read your post sooner. Kester University gave a free seminar at Bethesda, MD 15 Oct. All day, food included, about Lead-Free Assembly. I went, it was worth the two hour drive. Call 800-253-7837 if you want future information. Also th
Electronics Forum | Mon Nov 17 14:14:15 EST 2003 | blnorman
The main function of the test is to evaluate the solder mask. Basically you are testing three samples: #1 - No solder mask, #2 - solder mask without solder, and #3 solder mask with solder. The solder pot is used to apply solder to the patterns on O
Electronics Forum | Wed Nov 19 16:35:27 EST 2003 | davef
We'd be incluned to dip the BGA ball in tacky flux, place the BGA on the PTH interposer, reflow that suka, and get on with things. [Take the people involved out to lunch with the money you save on not buying a stencil.] On damaging the glop top, we'
Electronics Forum | Thu Nov 20 12:10:20 EST 2003 | frank
Well, let me take a shot... +/-100um = 0.1mm 5 sigma = is the number of acceptable defects (or placements outside of that accuracy (or tolerance). I believe 5 sigma is 233 defects out of 1 million, but I could be wrong on that. So basically all pl
Electronics Forum | Wed Nov 26 10:46:45 EST 2003 | caldon
For a general rough rule of thumb I use Practical Components for programming our machines. Practical has a nice layout of most Tape and Reel components and sizes. We use this mostly for tape/ feeder allocation. But for QC, Specs, and Other Stuff we
Electronics Forum | Mon Dec 15 22:05:02 EST 2003 | Sam
hi Liang, We had the same problem like you before, it happened during starts up the machine (S13) and run the production for the first or second board. We also replaced the 2/2-way microvalve of placement circuit. The problem had solved at the begini
Electronics Forum | Thu Dec 18 17:43:57 EST 2003 | JD
Good evening all, I have recently gotten rid of our old SRT rework station because of lack of use. Before dumping however I took the CCD camera and monitor in the hopes of turning it into a board inspection station. However, the camera and monitor
Electronics Forum | Tue Jan 13 01:20:31 EST 2004 | mantis
Hi All, I have seen this issue on a QFP160.Firts of all as previously suggested if the board is wave solderded make sure that you are not seeing topside reflow as the board goes over the wave.Secondly you should verify your reflow profile.I seen this
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