Electronics Forum | Wed Aug 04 10:20:13 EDT 2004 | santech
I am looking for an inexpensive way to mark pcb's. Anyone out there got any ideas? I need to print out 2-5 characters on an array of 40-60 boards. currently using silk screens and an old screen printer, but I can see that in no time I will have ov
Electronics Forum | Fri Aug 20 13:36:46 EDT 2004 | ttye01
We conduct temperature stress test (-40 to +100C)on our products which sits on our expensive test board. This stress test on our product shorten the life span of the test board due to the extreme temperature change. I have tried epoxy coating on the
Electronics Forum | Sat Aug 21 16:29:39 EDT 2004 | Slava
Hi Dror, I also work in Israel in smt field. We get the info from the offline optimizer and arrange it in the following way: element - machine no - f/r - place (for example 100nf - 3F34) Elements are placed in abc order, so it is easier to find it
Electronics Forum | Thu Sep 09 04:45:02 EDT 2004 | Rob
Hi, Depends on where in the world you're based, but in the UK you can pick up a decent Universal GSM1 for around �12K-�15K ($20K-$27K). We place BGA's, huge fine pitch IC's, 72mm connectors etc with no problem. I believe they do up to 100mm feeder
Electronics Forum | Fri Oct 22 04:09:22 EDT 2004 | christina
Is there anyone who knows the yield rate difference for SMT on multi-flex boards and rig-flex boards ? Basically, I think the yield rate should be higher for rig-flex than multi-flex due to the poor dimensional stability of polyimide, since multi-fle
Electronics Forum | Tue Feb 01 11:33:26 EST 2005 | Indy
Hi Jay, please let us know your inputs from the seminar regarding SN100 Nihon solder from FCT. This solder seems to have a higher melting temp of 221C. It prints well and visually looks similar to SAC alloy. Have no reliabilty data though. Jay
Electronics Forum | Thu Feb 17 12:01:25 EST 2005 | Slow Ride
Or leave it stand alone. Granted, you may not be able to inspect 100%, but you can inspect before relow, after relow (if your AOI does solder joint inspection), inspect before wave and afterwards if needed. Now how did you justify a peice of equi
Electronics Forum | Tue Mar 01 13:51:23 EST 2005 | pjc
pr is 100% correct, can't have visual inspectors touching up for the reason he states. I have always seen that- when in doubt they will always "touch up". Touching up is always a bad thing. Looks like you have some problems that need fixing to elimin
Electronics Forum | Mon Mar 28 14:57:46 EST 2005 | chon
So far I've been working with a xtal. I've been placing this on a board and the part was falling from the board. We found residues on leads and notified vendor as contamination, after that 100% of our production has been verified with a perpendicular
Electronics Forum | Mon Apr 04 18:23:35 EDT 2005 | GS
Solder volumes is very important parameter to keep under control in order to get a good and reliable CCGA solder joint, and an automatic 3D paste volume inspection is strongly recommended practice to use. Questions: - what Column pitch do your CCGA h