Electronics Forum | Fri Nov 17 16:33:10 EST 2000 | Michael Parker
20X magnification, using 0.5 mil accuracy, is helpful. I have a MicroVU system for geometric measurements in my Receiving Inspection, which is used to also measure the new stencils to ensure aperture reductions requested are actually provided by the
Electronics Forum | Thu Nov 16 18:00:37 EST 2000 | Dave F
Please consider the 48 postings in the SMTnet Archives [under a search for ... benchmark*] as a starting point for your investigation.
Electronics Forum | Thu Nov 16 18:04:40 EST 2000 | Dave F
We've not seen "pick problems". We've seen "release after pick problems" caused by adhesive on components, recently. Could be the came thing, though.
Electronics Forum | Fri Nov 17 09:29:27 EST 2000 | CAL
Some more information is needed. Is there a machine error indicating a mispick? Or a vision error Component missing? I am not as familiar with UIC machines as I am with Siemens but here is my $.02 anyway. Try shimming the feeder under the pick up pos
Electronics Forum | Fri Nov 17 11:52:41 EST 2000 | Stefan Witte
I've seen problems where the component was slightly thicker than the tape and popped out of the pocket upon transport. Is the component still in the pocket after mispick? Do you have access to a high speed camera or could rent one for a day?
Electronics Forum | Tue May 22 10:17:04 EDT 2001 | jdtpfacreate
Kris, Get that high speed camera in there. You have to find out what is happening after the pick point. Also just to throw in another possibility into your cause list. How about static electricty? It can effect such small components. My $ .02
Electronics Forum | Thu Nov 16 07:32:51 EST 2000 | R Missimer
I have seen several patents on this process, and would discuss with you my understanding. I would also be interested in how things worked out for you, and your findings overall. Please advise RMissimer@ieee.org
Electronics Forum | Wed Nov 15 11:08:15 EST 2000 | Adam
I'm experiencing some toombstonning on the 0402 components. What are the variables that I need to be looking for to solve this problem? Any help is appreciated.
Electronics Forum | Wed Nov 15 11:25:59 EST 2000 | Wolfgang Busko
Hi Adam, there�s a lot of information about tombstoning in the archive. Just 2 or 3 weeks ago for 0402�s, you will find enough looking that up. Good luck Wolfgang
Electronics Forum | Tue Nov 14 21:55:54 EST 2000 | Dave F
There's a boat load of causes for icicles. Favorites are: * Conveyor speed too high * Conveyor angle too high * Contaminated solder
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