Electronics Forum | Fri Jan 08 21:34:44 EST 2010 | isd_jwendell
Not specific to QFP, but I had a run of poorly etched boards. I could see the short using 75X magnification with back lighting, but only some of the time. Nasty little shorts on ~25% of the boards that cost us a boat-load of cash.
Electronics Forum | Thu Oct 06 09:42:57 EDT 2011 | vetteboy86
I've put a call in for some tech support. I haven't had much succes dealing with them in the past. If anyone is running this machine, any knowlege on my problem is much appreciated. Currently camera 3 (highest magnification) will not find fiducials
Electronics Forum | Mon Jul 29 09:27:15 EDT 2013 | charliedci
All of our reflow is with room air, 63/37 and SAC305. I believe nitrogen will get you better looking solder joints (shiny, less grainy under magnification), but per IPC, functionality and strength I don't think there is much difference.
Electronics Forum | Fri May 30 07:45:06 EDT 2014 | rrosera
Can anyone recommend a good reasonably priced microscope for looking at cross sections? The ones I'm finding with the magnification we're looking for all seem to be for glass slides.
Electronics Forum | Tue Apr 10 13:43:13 EDT 2001 | mparker
since you did not define what visual process you are inspecting with I will ask is this "grainy" appearance being detected with the naked eye only? Are you using magnification? if so, what power? Is this a SMT solder or through hole solder problem?
Electronics Forum | Thu Jan 03 08:02:53 EST 2002 | davef
Slump is a function of the particular paste you select and the temperature of the paste. Use a slump test like the one that follows to compare fluxes. Slump Test Step Process activity 1 Print paste on white ceramic substrate or microscope sli
Electronics Forum | Fri May 27 17:21:35 EDT 2005 | mrclean
Dear SM Rookies, Another acceptable test method is visual inspection. IPC-A-610 details what to look for with different contaminants, providing magnified pictures of the possible visual residues. With an existing cleaning process, magnification
Electronics Forum | Fri Sep 22 08:37:07 EDT 2000 | Erick Russell
For any rework machine a good optics system is important. A look-up look down is used for BGA components. 30X magnification is required for flip chip, MicroBGA and fine pitch QFP placement. Digital cameras are not required, CCD have a good enoug
Electronics Forum | Mon Jun 18 11:15:53 EDT 2001 | Gil Zweig
The cost of an x-ray inspection system will be determined by the following inter-related paramers: 1. The focal spot size of the x-ray source. 2. The maximum tube voltage. 3. The physical size and shielding requirements of the systems. 4. The design
Electronics Forum | Thu Apr 29 13:27:36 EDT 2004 | Kirk
Is it possible to put PCB to the screen printer with vision and on the board put sheet of paper then make print on the paper and it is the reference then i teach vision for example fine pitch aperture then remove paper and align PCB? We have semi-a
