Electronics Forum | Fri Oct 24 09:12:30 EDT 2003 | ADAM
Guys Does anyone out there have scientific techniques to determine whether a chemical ( safewash S and Prozone )are still usable. I 've just joined a company where they have have litres of the stuff but i can't tell whether it's still suitable or not
Electronics Forum | Fri Oct 24 20:53:53 EDT 2003 | pranav
I am re-designing a MLB Printed Circuit Board which has thro' hole chips and a BGA. I am planning to go for reflow soldering for the BGA on one side and wave soldering for the thro' hole parts on the opposite side. Is there any concern or any sequenc
Electronics Forum | Tue Oct 28 09:47:50 EST 2003 | woodsmt
It is possible to use a selective wave soldering fixture to "mask" the BGA devices from the wave. Unless you have a very thick board or one that is tough to heat, you should have no problem with BGA. Of course you should run some process experime
Electronics Forum | Tue Oct 28 12:41:42 EST 2003 | Stephen
I just reread your message. The wave soldering is on the other side? I.E. The Through hole parts are on the same side as the BGA. This would be the only way to do it. But reading the message again it could be interepted as the through hole parts
Electronics Forum | Wed Oct 29 17:30:17 EST 2003 | Gabriele
I am sorry, my understanding ( English is not my language)was to have BGA on SMT side, I mean destination solder of wave. But after your clarifiation, now I am in front to a DFX more that a Design for Manufacturing. In this case every think can be do
Electronics Forum | Tue Oct 28 12:10:12 EST 2003 | amacphie
Hi, I'm looking to develop some industry specific examples of the application of Six Sigma for my MBA dissertation. I used to work in semiconductors so I have plenty of examples to include from that are but would like to include examples from assemb
Electronics Forum | Fri Oct 31 11:32:32 EST 2003 | caldon
Brian- I think you are correct. To place 0402 components Siemens usess a "Shim" under the carrier tape. 0402 components can be used with a standard 8mm feeder with the shim Cal Also, Steffan still works on a fair amount of Siemens products and chec
Electronics Forum | Fri Oct 31 12:54:26 EST 2003 | stefwitt
Absolutely, 0402�s are no problem and should not require any special modifications. However, you will find, that not all 0402�s are the same. I have users, who created 5 different GF-packages with different dimensions and light contrast. With small
Electronics Forum | Wed Oct 29 20:28:59 EST 2003 | davef
The possibilities are dizzying, aren't they? In our dingy fog, if we don't understand your requirement, say so. 3 Spec Fir Tree General Technical Specification 3a Design/Layout: IPC-2221 IPC-2222 3b PCB Fab: IPC-6011 IPC-6012 IP
Electronics Forum | Tue Nov 04 16:32:22 EST 2003 | Marc
Marc, I agree with Dennis. Your best method is to apply solder mask over the pads, then install the BGA. You can also remove the balls or completely remove the pads, but it take a skill person to do it. We do all that type precise rework in Southern
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