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
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 | Tue Mar 30 22:43:36 EST 1999 | dean
| Does anyone know of a contract manufacturing house that can guarantee smt component placement and can verify placement of +/-.015? | | Thanks in advance | Question: mm, inches, or mils? I can do it. However, what is your reliability level? 9
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 | Tue Aug 28 16:05:21 EDT 2001 | stefan
I did not question the accuracy, which is very good, but only 99.8 % of the time. If I require this accuracy for a certain part to be placed, than I want to have this part on target more often than 3 sigma permits.
Electronics Forum | Tue Aug 17 23:41:36 EDT 2004 | fastek
There is a new third-party system that has been evaluated by and is now endorsed by Fuji. This system can not only interpret the data and supply Cp,Cpk and 3 Sigma values, but also make adjustments in the proper data together with documentation of r
Electronics Forum | Tue Aug 01 06:24:31 EDT 2023 | simonr
@srikant I'll check their process, meanwhile thanks for the reminder to put fiducials nearby. @MagyarT and Evtimov it sounds like it should work OK, the machine specs are 35um (3 sigma) so the results will be interesting, will post when I get some d
Electronics Forum | Mon Dec 06 14:59:37 EST 1999 | Brian W.
Cpk is sometimes referred to as the voice of the process because it is measuring how tight your process is in relation to the specification limits. A Cpk of 1 means that you are running a 3 sigma process (plus or minus 3 sigma). This means that you
