Electronics Forum | Thu Oct 25 19:53:42 EDT 2012 | sonavc
Thank It worked without the user name and password.When I try to zero axis I have other error unable write to global memory 5008. My machine, when turn it on i don't see the power to the Digiplan 8 axis modular and no bright on 24VAC on at servo co
Electronics Forum | Tue Oct 09 22:42:38 EDT 2012 | davef
You're correct. It hinges on who's talking about a "production printed board." * You think a "production printed board" is the board that you're trying to produce and ship. * Your fab thinks a "production printed board" is a 30-up panel. It would be
Electronics Forum | Thu Oct 11 17:15:31 EDT 2012 | boriskilk
We have seen two issues which have caused problems with solder mask adhesion. The first was improper curing of the mask but also solder temps which were too high, particularly with a white tin finish. Rather than tell your supplier their material i
Electronics Forum | Tue Oct 09 14:30:32 EDT 2012 | bandjwet
Put on your Chemical Thinking Caps..... We are ablating the mask of a PCB which was over a copper layer. This exposes copper. Outside of an electrical test (no can do) how could we use a fast non-destructive test in order to determine that copper (
Electronics Forum | Thu Oct 11 07:06:43 EDT 2012 | davef
Remember when the whole 'lead-free' thing first hit us in the stomach? Companies were selling swabs that could detect the presence of lead, which we purchased in hopes of determining if the solderability protection on components was not leaded. I d
Electronics Forum | Thu Oct 11 13:10:04 EDT 2012 | anvil1021
We are experimenting with void control in reflow and have had pretty good luck for the most part in attaining Class lll IPC spec. but we have seen a sudden increase in voiding on a specific product and I was wondering if anyone has seen this extreme
Electronics Forum | Mon Oct 15 08:24:24 EDT 2012 | scottp
You could pay the extra to have the microvias plated shut and planarized. If your voids are larger than 25% of the BGA joint area then I would suspect a solderability problem. Either the board plating or a solder paste problem. If they're less tha
Electronics Forum | Tue Oct 16 11:02:05 EDT 2012 | terry_zhang
Has anyone tried to immerge the PCBA(with ICs, resistors, capacitors,connectors populated) into IPA for 1hr? The temperature of IPA is about 60~70C, is there any damage or degrating found for PCB and the components? Is there any related information s
Electronics Forum | Sat Oct 20 14:24:16 EDT 2012 | davef
Not sure why you'd want to immerse an assembled board in 60-70*C IPA for an hour, but I doubt there is much published material on the topic * IPA is toxic * IPA is flammable at room temperature and heating IPA to 60-70*C only makes it more so * There
Electronics Forum | Tue Oct 16 13:30:49 EDT 2012 | sarason
Go to my page, it has a links list. You could easily spend months reading the material. This site has a fair bit of specific information. SMT magazine is a good light read on SMT topics. http://members.iinet.net.au/~sarason/Links.html regards saras
