Electronics Forum | Fri Nov 21 14:10:07 EST 2003 | Vincent
Thanks for your reply. I'm wondering if We have 2 machines, one can do +/-100um @ 3sigma and the other is +/-100 @ 4sigma. And how U come up the solution. thanks
Electronics Forum | Fri Nov 21 14:10:21 EST 2003 | Vincent
Thanks for your reply. I'm wondering if We have 2 machines, one can do +/-100um @ 3sigma and the other is +/-100 @ 4sigma. And how U come up the solution. thanks
Electronics Forum | Mon Nov 24 02:48:33 EST 2003 | Process Engineer
I am not sure where Frank got his numbers but here is what Sigma really means. 1 Sigma is one Standard Deviation, 2 Sigma is two Standard Deviations...(anyone take a Stats class in college?) I am not going to bore you with all the stat-mumbo-gumbo
Electronics Forum | Fri Mar 02 09:50:04 EST 2001 | stefwitt
Dave, I did assume Angela meant components ready for pick up. It would be too time consuming for any machine to measure the component availability prior to pick up. If we assume that the feeder advances in a rate of six sigma ( 3 defects per mio ) t
Electronics Forum | Wed Feb 28 18:51:21 EST 2001 | mparker
It's obviously Bertha - the only one of the Butts sisters that was a standard 3 deviate
Electronics Forum | Thu Mar 01 09:14:12 EST 2001 | angela_gong
yes, it is a Black Belt training,instead of 5 days, it is a 20 days traing during 4 mothing, with a project. I just kick off my project lastday. when the pick up avalability is alreday over 99.5%, how to increase another 0.3%, so difficult, so many
Electronics Forum | Thu Mar 01 10:10:30 EST 2001 | Stefan Witte
Angela, besides the sense or non sense of six sigma and related meetings, you will have to break down the component feeding issue into several sections, which are all impacting the feeding reliability. 1. Component dimensions 2. Tape size 8, 12, 16
Electronics Forum | Wed Jun 15 00:50:32 EDT 2005 | Frank
From my understanding: Sigma is the same as one standard deviation. So 3 sigma is the same as 3 standard deviations. It all boils down to how repeatable your machine is. Another way to look at it is the probability (or confidence) that the machin
Electronics Forum | Mon Sep 12 12:22:10 EDT 2005 | Rob
Then he's a very naughty man! Advantis with Lightning head: Chip Accuracy +/- 68uM @ 3 sigma CP643: +/- 66uM @ 3 sigma CP842: +/- 55uM @ 3 sigma I know specs are just statistics but both our Fujis & Universals still calibrated to well within the m
Electronics Forum | Fri Mar 16 14:48:59 EDT 2007 | drt
I noticed a difference in the specifications from the Japan web site to the US site. IPC9850 Speed in Japan is 25,000. US is 27,000. Accuracy in Japan is stated at 50 microns at 3 sigma. US is stated at 40 microns at 3 sigma. 01005 capability is di
