Electronics Forum | Thu Mar 27 14:09:41 EST 2003 | Enrique Chairez
Hi All, I have observed this problem with one PCB supplier, the portion of the PCB area affected was cut and observed in SEM (Scanning Electron Microscope) and submitted to an EDX (Energy Disperse X ray analysis), finding Phosphorus levels higher
Electronics Forum | Tue Aug 17 10:44:44 EDT 2004 | cyber_wolf
Carl, That machine looks way expensive. We found a used Fuji microscopic jig for 3500.00 It came with the master jigs and master tapes. It doesn't have all the bells and whistles, but it does exactly what it is supposed to. John, I am curious as t
Electronics Forum | Tue Mar 07 14:03:45 EST 2006 | slthomas
The cheapest method I've found to measure anything in that size range is a reticle for a stereo microscope. I don't remember the resolution but it was 2 or 5 mil, I think. It's not rocket science but it's a nice tool for small scale measurements tha
Electronics Forum | Wed Dec 20 22:54:28 EST 2006 | fastek
I think that in this day and age.....if you are not testing the feeder via some sort of indexing proceedure while the feeder is off of the machine.....you are simply not going to be certain the feeder is working properly. The Alternative SMT jig do
Electronics Forum | Tue May 23 09:53:05 EDT 2006 | stepheniii
Make sure your reflow profiles are the best you can make them. You will probably want to, at the very least, get some sample BGA's and boards to sacrifice to profiling. Drill a small hole through the board into a middle ball of the BGA. Also put a t
Electronics Forum | Fri Jun 16 18:48:57 EDT 2006 | GS
Hi Grant, just my opinion, I think the concern could be related to the extra temperature the BGAs have been exposed during the Lead Free Reflow Temperature. So you need to check ( data sheet) what is the max temperature and how long the Pb/BGA can w
Electronics Forum | Mon Dec 04 22:23:18 EST 2006 | Brad
Hello all, Happy Holidays. I need the names of some companies that will 'LEASE to purchase' electronics assembly tools. Most importantly Microscopes, Soldering Irons, Air Compressors, Vacuum Pumps, Wire Cutters, Thru Hole Lead Forming Tools, Bakin
Electronics Forum | Fri Jan 12 17:33:56 EST 2007 | John S.
I've not seen it on a solder joint, but I've seen it on an SMT pad that had been skipped in a wave solder operation. The boards were under inspection for poor solderability. We never really pinpointed the cause. It would make a perfect 6 pointed s
Electronics Forum | Thu May 03 16:01:06 EDT 2007 | geb
Hi, We are in the market for some Inspection Equipment. We have never bought any before but have trialed two types so far. A Mantis system, and a camera system with built in microscope. We are keen on getting the camera with scope so that we can use
Electronics Forum | Fri Jul 13 17:00:34 EDT 2007 | jmelson
Oh, sure, on fine-pitch parts you need a microscope or at least a good magnifier. But, OK, you have some kind of contamination. Solder is one thing, but where are these stainless, aluminum and copper particles coming from? Stainless makes me think
