Electronics Forum | Wed Nov 07 18:11:44 EST 2007 | jmelson
I can't answer for wave, but we tried some Sn100 paste for reflow, and couldn't get it to work worth a darn. I then got some SAC305, and was relieved to see it work almost as well as SnPb at its best! Much better wetting and flowing to the various
Electronics Forum | Mon Dec 17 10:42:23 EST 2007 | kelz
I would refuse to use the PCB's if they are not usable as specified. The fiducials line everything up with the artwork...how can this accurately be done in a manual way? Is the risk of reworking fiducials worth the cost of the potential financial im
Electronics Forum | Tue Jan 15 13:16:25 EST 2008 | ck_the_flip
Yes, the previous "non-balling" flux was alcohol based, but very weak activity. We found it was worth the switch to water-based, to get prettier solder joints - but...at the expense of having to "brush off" solder balls on a couple of assemblies wit
Electronics Forum | Fri Jan 18 09:04:24 EST 2008 | jdumont
We have an Advanced Techniques AT707 system. Overall I am pretty pleased with it. Honestly we went with them because it was one of the lowest priced models when we were first getting into BGAs four years ago. They are worth a look. This year ill be l
Electronics Forum | Thu Feb 07 05:24:16 EST 2008 | muarty
I would advise that you clean the stencil thoroughly at least every 4 hours, also though it is worth cleaning the stencil top and bottom after any breaktimes. To avoid solder paste drying off in stencil apertures. Best piece of kit I've purchased was
Electronics Forum | Thu Feb 21 08:11:44 EST 2008 | scottp
I agree, the level of Pd plays a role here. Knowing that some versions were probably OK we tried to develop a soldering test for PdAg components with pass/fail criteria, but decided it wasn't worth the engineering effort for a finish that's so rarel
Electronics Forum | Tue Mar 04 20:33:21 EST 2008 | slthomas
Well, since you distinctly said *any* help.... as far as I know all of the GEM machine can use the original feeders, but there are as I understand it some newer smart models available for the X series machines. All I've actually used is a Topaz, th
Electronics Forum | Fri Mar 28 08:58:44 EDT 2008 | newtfly
When you say that the paste job "looks" good, are you actually taking a 3d measurement of the paste deposit, or are you doing it by sight? A good 3d paste measurement tool, in this case, is worth it's weight in gold. ASC International produces a l
Electronics Forum | Fri Mar 28 15:00:16 EDT 2008 | mmjm_1099
Hello all, I am looking to troubleshoot and old CRT from a CP43 and looking for a schematic. PN# CG-9702-FS. This I am sure is old and might not have anything but hey worth a shot. I already ordered a replacement just looking to repair this old one.
Electronics Forum | Tue May 06 09:28:31 EDT 2008 | realchunks
When looking at conveyors, you need to look at how heavy the equipment is. Heavy means it won't move when your fat quality director leans against it. Alignment can be a pain if the conveyor is light weight. Obviously heavy mean a little more expen
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