Electronics Forum | Tue Jan 15 10:59:11 EST 2008 | gregoryyork
We did numerous testing some years ago on matte, gloss and semigloss and found after chemical extraction of the PCB and IR analysis the only difference was the actual cure of the resist. The more plasticizers released the worse the balling If you use
Electronics Forum | Tue Jan 15 14:03:18 EST 2008 | patrickbruneel
Hi �Pb-Head� I agree with everything you say, except for your statement that alcohol based fluxes perform poorly with convection heat. The fluxes you tried might have performed poorly, but that doesn�t mean that all alcohol based fluxes perform poor
Electronics Forum | Thu Jan 10 11:37:43 EST 2008 | jdengler
Hi JD, We use the OM-310 NC for most of our lead free work and see some wetting issues. We also have a lead free produst that requires cleaning so we use the WS-819. It does seem to wet better although I have never tried the WS-819 on the same b
Electronics Forum | Tue Jan 15 11:50:17 EST 2008 | pbarton
We too are trialling WS819 with SAC305 alloy. The foaming in cleaning causes us a headache but all other attributes seem much improved over earlier types. Previously we were using WS619 - no foaming issues but MUCH shorter stencil life (less than 4 h
Electronics Forum | Thu Jan 10 15:32:54 EST 2008 | jdengler
A long time ago, in a place far, far away, I would test Fuji IP machines without the MFU's installed. They have a mechanical switch on the machine so it knows when a MFU is present. But what normally catches everyone is that the locking air cylin
Electronics Forum | Thu Jan 10 18:32:20 EST 2008 | stevek
Our layout guy recently started making land patterns with the corner lands oversized. These are for leadless and various flatpack parts. He claims this is to improve manufacturing. I had seen a few boards with this just as I got out of the CM worl
Electronics Forum | Fri Jan 11 10:56:34 EST 2008 | kmorris
We all know that Engineers are human and consequently may make errors when creating pick and place programs. (e.g. program a wrong part number for a given reference designator) Usually that is easy to detect since the wrong component is a differnt p
Electronics Forum | Fri Jan 11 15:16:46 EST 2008 | jaimebc
Our programs are created in an ASCII format ( we do not have Unicam or Circuit cam )So using Microsoft Excel,we open/load the finished PNP program and then we sort it by reference designator. Still in Excel, we then open/load the BOM (in an ASCII)
Electronics Forum | Sat Jan 12 23:01:11 EST 2008 | operator
Does anyone have a good source for inspection microscopes? I want something with a lot of zoom. I want to be able to zoom in on one 0603 resitor joint. I am not sure what the magnification on that would be. Anyway that would be what I would want, but
Electronics Forum | Tue Jan 15 11:05:20 EST 2008 | slthomas
"When I spot something suspicious, then I might turn up the mag. to about 20X, that's all I need." Not sure what kind of stuff you're building or what standards you wish to meet (my qualifier, since I currently only have 20X capability myself but ha
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