Electronics Forum | Wed Oct 10 02:04:10 EDT 2007 | omidjuve
hi we use a no clean solder paste with the sn63pb37 alloy and our high frquency board doesn`t have any problem in test but after this product is finished now we use 2 different solder pastes 1. sn62 pb36 Ag.4 RA tape 2. NC type lead free with Ag i
Electronics Forum | Fri Dec 28 08:21:12 EST 2007 | clampron
Good Morning All, I am looking into solder paste inspection systems. I have used a solder paste height inspection system in the past. We have derived less than usefull information from this system as it will only measure the pad that was taught. I h
Electronics Forum | Wed Feb 06 11:33:18 EST 2008 | Frank
I once worked at a small CM that did this. On the floor we would save the spent tape to be re-used, so the only recurring costs would be the cover tape. Unless it was otherwise damaged the carrier tape was good for a few passes at least. It just h
Electronics Forum | Tue Mar 04 10:42:45 EST 2008 | operator
We have a product that requires labeling and serial numbers that obviousely should be put on prior to conformal coating. 1.What kind of labels/ink/sharpe can be used under conformal coating without disolving etc...? We will be using Techspray 2103-1
Electronics Forum | Mon Mar 17 15:45:59 EDT 2008 | slthomas
Something to consider is the ability to pick from 2mm tape if you're going be placing 0402s. Quads can't really do it (at least they couldn't do it about 6 months ago when we inquired), but you can program two feeder locations for the same feeder and
Electronics Forum | Thu Apr 17 07:54:02 EDT 2008 | davef
Our quality types wouldn't allow: Q16 on "1up good board2.jpg", Q17 on "1up good board.jpg", or Q15 on "1up good board3.jpg". They'd probably pass Q13 on "Q13 next to Q14 no-reflow.jpg", if it wasn't part of a bigger issue. Again, you appear to have
Electronics Forum | Wed May 21 04:50:51 EDT 2008 | aj
Hi all, We had similar problems a while back. Boards would fail at test but if you applied pressure to the BGA they would pass. Turned out that during the PTH assembly process the Operators were flexing the cards during the insertion of an Oupin C
Electronics Forum | Wed Sep 10 14:19:51 EDT 2008 | stepheniii
Root cause analysis is simply looking for what caused a problem, then looking for what caused that, and so on, until you reach someone you don't like, or can pass the buck onto. I don't see why Vlad's method is better than tweaking your knobs until y
Electronics Forum | Mon Nov 17 04:03:08 EST 2008 | griffin
If the whole board is shifted then it must be a problem with the clamping of the fixtrue to the machine or the board to the fixture, or the fiducial reading that is incorrect. Are the fixation of the board to the fixture the same in both programs? A
Electronics Forum | Wed Nov 19 06:02:22 EST 2008 | caerleon
Hi all, I have been in the game for near on 15 years and finally something has stumped me! As this site has always provided a wealth of knowledge and at times some amusement I have decided to post it here. Ok. My company uses a test method on an Om
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