Electronics Forum | Wed Jan 04 05:39:29 EST 2006 | Rob
I can't see how prompt washing of the boards could cause a problem in X7R but not in Y5V or NPO. Yes, if you dropped a board into the wash straight out of the oven without letting it cool down then it's not going to like it, but surely no-one does t
Electronics Forum | Wed Jan 04 13:47:11 EST 2006 | russ
To answer your question it was mentioned that allowing the boards to cool slightly between reflow and wash may help this case to eliminate thermal shock from immediately going into colder water straight out of the oven with no cooling. In looking at
Electronics Forum | Tue Dec 27 07:22:44 EST 2005 | davef
It could be lots of things. You're not helping to narrow those alternatives. So, consider taking a sample to: * An analytical laboratory. * Teachers in the chemistry department at a local university. Kester recommends the following independent la
Electronics Forum | Thu Dec 29 03:57:16 EST 2005 | sparrow
Hello Chris, To be honest, it's hard to believe you could not bond to ENIG at all. Yes, the gold layer is thin and hard, but it just narrows the process window and does not make the bonding impossible. I say this, because we have been using TS gold w
Electronics Forum | Tue Jan 03 03:01:35 EST 2006 | Frank
The 740 and 760 basically have the same specs as far as component ranges: 0402-50mm components. The 760 is a bit more accurate and the vision system is better. The 740 was designed when BGA weren't really around and so it can barely vision center b
Electronics Forum | Tue Jan 03 22:00:32 EST 2006 | fdr4prez
Yes Rick, you are correct, Zevatech HBA, PPM7 & > PPM9 were all designed and built by Swiss. That > was a long long time ago. Sorry, I guess I forgot about those old beasts. Then don't forget about the good old CATs and Microns made by Zevatech
Electronics Forum | Tue Jan 10 14:44:42 EST 2006 | greg york
Not sure about Sn/Cu/Ni large market share here in Europe as we have a large part of the UK market with SACP0307 alloy 0.3%Ag introduced over Two years ago Also worked against Sn/Cu/Ni alloy with large TV Co and they went with 0.3%Ag due to reliabili
Electronics Forum | Fri Mar 31 12:27:27 EST 2006 | Marcus
We have used the SN100C for over a year now with fanastic results. We use the SAC305 for SMT and SN100C wire exclusively. There are no problem mixing the alloys. I am also on the commitee for the NASA testing. The SN100C did out perform SAC and SnPb
Electronics Forum | Tue Jan 03 16:23:37 EST 2006 | Phil
Our past experience with Frost and Sullivan is that they derive most of their data from interviews with the subject companies and press releases. That puts them a half a notch above asking the sales reps for info (except with F&S, the total won't be
Electronics Forum | Wed Jan 11 10:12:23 EST 2006 | ratsalad
I've used an old version (maybe 7 or 8 years old) of GC-Place to convert gerber to centroid data. It is semi-automatic. If I remember correctly we'd start by selecting the pads for the largest components first. The software would find matching gro
