Electronics Forum | Wed Apr 14 14:48:48 EDT 2010 | davef
It won't work. An acoustic signal can't punch through a BGA. The signals reflect at every interface. So, it works for flip chip, but there are too many interfaces in CSP and BGA. Equipment, Inspection, Acoustic microscope * MicroPhotonics * Sonos
Electronics Forum | Wed May 19 16:35:18 EDT 2010 | stepheniii
How thick is the stencil? Also what type of paste? We have a nice little microscope that has gradients on the lens so we can measure whether an aperture is 8 thou or not. Almost always it is but then we buy from a couple of good stencil suppliers.
Electronics Forum | Fri May 30 19:48:27 EDT 2014 | hegemon
Try Scienscope. Lot of different configurations, many suitable for what you are doing. No relation or benefits from Scienscope. 'hege
Electronics Forum | Mon Jun 02 15:26:01 EDT 2014 | cyber_wolf
Define reasonable priced.... We have a Buehler Viewmet that goes up to 500x and has a nice software package for doing reports. You are looking at minimum 10-15K for anything decent.
Electronics Forum | Wed Sep 09 17:22:42 EDT 2015 | jayrcomajig
Is there any electronic digital devices or other easiest ways to use to determine any unsoldered pins/leads besides some other normal inspections like using microscopes.
Electronics Forum | Tue Apr 12 19:22:44 EDT 2016 | szs0080
Hello, I did drop testing of some sample boards which had 15mm SAC105&305 BGA's on them. I polished them real nice and looked it under optical microscope for cracks. Was wondering the etching procedure before looking it under SEM. Thanks
Electronics Forum | Tue Sep 11 04:39:14 EDT 2018 | cannizzaro
If you need to know the exact copper thickness of the board, you can ask the Fab to offer the microscopic report, I have already made a 2oz board in ALLPCB before and asked them offeed me this report,usually normal factories can offer it but need add
Electronics Forum | Wed Dec 11 18:41:47 EST 2019 | slthomas
"A microscopic amount of lead on an 0402 joint makes the whole assembly technically non-compliant" I believe that if there is less than .1% Pb in all of the solder on the board then I believe that it still complies. And as to the Grecian thing, on
Electronics Forum | Sun Jun 05 03:29:45 EDT 2022 | ttheis
Yes, we confirmed under microscope there was a small bit of paste contamination on the nozzle. We found this on two nozzles that were rejecting parts. Problem solved once the nozzles were cleaned and non-reflective.
Electronics Forum | Tue Jan 10 18:46:30 EST 2023 | cyber_wolf
Check your 500 nozzles under a microscope very closely for tip damage, clogs, or un-smooth spring action. 1 bad nozzle can make it seem like you have a chronic problem. If you have knock off nozzles (chinese reproductions) that can be an additional i
