Electronics Forum | Thu Sep 21 17:39:32 EDT 2006 | Cmiller
We have used it and it seems to be fine. I think we have probably run a few thousand boards with it across maybe 6 different assemblies.
Electronics Forum | Tue Sep 26 12:04:11 EDT 2006 | sliebl
Is there a difference between SN100, SN100C, and SN100CL?
Electronics Forum | Mon Oct 02 20:17:38 EDT 2006 | davef
The different coefficient of expansion of materials used in some BGA can cause warping issues. We've talked about this previously on SMTnet. Search the fine SMTnet Archives. For instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=2
Electronics Forum | Tue Oct 03 15:28:24 EDT 2006 | realchunks
No adhesive? Then how about 2 different solder pastes? Higher melting temp for the first side, lower for the second.
Electronics Forum | Tue Oct 03 18:01:24 EDT 2006 | stepheniii
If you do find one, you will want to cut some kind of "handle" with it. You might want to practice cutting a different pattern first, if you only find one of the pattern you need.
Electronics Forum | Wed Oct 04 16:19:54 EDT 2006 | russ
you may want to try a different MFGR of paste, this does help on many occasions. Russ
Electronics Forum | Thu Oct 05 07:58:05 EDT 2006 | realchunks
I have noticed certain BGAs void more than others. We place about 8 different brands of BGAs and only one brand voids like crazy and we have to adjust for it.
Electronics Forum | Fri Oct 06 11:41:11 EDT 2006 | Bill
UP1500 was not a real MPM machine, so not relevant. UP1500 was an SMTech (UK) machine, different sofware, camera, etc.... than an MPM machine. AccuFlex is now real MPM.
Electronics Forum | Wed Oct 11 20:52:51 EDT 2006 | psgill
Guys, Any of you tried running different setting on the top & bottom side temperature on the reflow oven. I'm trying to address uBGA coplanarity issue using this method. Assume board are flat. Any inputs?
Electronics Forum | Fri Oct 20 11:44:40 EDT 2006 | sliebl
Anyone using Circuit Cam? We too are looking for a gerber/centroid converter. I used the demo of GraphiCode GC-PowerPlace and it works, but seems cumbersome. It's also difficult to substantiate the large capital cost of these programs without being v
