Electronics Forum: ppm charts (Page 1 of 2)


Electronics Forum | Thu Sep 11 23:54:35 EDT 2003 | El

Does anyone know how to set-up MS excel to generate PPM data? i.e pareto chart, defects report, etc

50 PPM

Electronics Forum | Wed Aug 21 17:50:05 EDT 2002 | davef

First, it�s GREAT that your defect rate of 282 is very close to your Boss� goal of 50 ppm. Second, your Cpk and your ppm numbers don�t tie out with our expectations. You say Cpk for: * mounter is 1.0 and �your mounting is 83ppm�. * printing is 1.33

SPC and Wave

Electronics Forum | Fri Jul 15 13:28:55 EDT 2005 | Brian

A process consists of much more than just thee machine. When developing a cause and effect diagram ffor the process, there are many parameters that fall outside the machine itself. There are Man, Machine, Methods, and Materials. Just monitoring th

50 PPM

Electronics Forum | Wed Sep 04 14:33:26 EDT 2002 | slthomas

We fondly refer to those charts as "wall art".

performance improvement

Electronics Forum | Tue Jun 18 05:40:38 EDT 2002 | ianchan

Hi mates, finally! some sense to all this, so this bloke is concerned about "ppm = quality" variations... looking back through all the muck in this thread, last posting before the s**t hit the ceiling was: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Date: June


Electronics Forum | Wed Jan 14 08:24:07 EST 1998 | Allison

Good luck in your conquest. I have been struggling with the same issues for some time now. I have made the following conclusions. First, it is nearly impossible to establish parameters in SMT to perform X-Bar and R charts. Electronics is not as cl

wave soldering and solder bridge

Electronics Forum | Mon Dec 17 11:55:08 EST 2007 | chef

I recently had the same problems, solder bridges on every thing I made, different customers boards, etc. I wave with no-clean flux. As I sorted out problems (pin holes, blow holes, splatter, etc.) I found a lot of variable factors. I changed flux,

50 PPM

Electronics Forum | Wed Sep 04 14:14:55 EDT 2002 | melo_guy

I like that "Lies, dam lies and statistics." thats a riot, only because its SO TRUE. Ill remember that i'm sure ill be able to use it sometime. My company does a lot of those graphs and charts that all relate to things that make no sense. I'm in c


Electronics Forum | Wed Jan 14 14:36:29 EST 1998 | Mike Cox

Your questions would require volumes of information to answer completely. This is a readers digest version to help you get started volumes Don't rely on inspection as a process indicator of your quality and defect levels. Unfortunately Inspectio

Re: acceptable defect rates for smt process, in ppm.

Electronics Forum | Sat Jan 15 13:13:33 EST 2000 | Mark Wiegold

Steve, Basically in answer to your question, there is no real set number for defects. Defect rates will vary between products and companies. If my company was running the same product as yourself then there is no reason to suggest that the defect ra

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