Electronics Forum | Thu Mar 06 09:50:00 EST 2003 | davef
What are the statistical conditions that must be met / checked prior to preforming Cp / Cpk calculations to assure that the calculations are valid?
Electronics Forum | Fri May 23 15:31:46 EDT 2003 | daanterstegge
Hi ChrisX, DPMO = number of defects per million opportunities. PPM (parts per million) is exactly the same, although the terminology is less clear about what it means. SPC(statistical process control) is a methodology based on statistical technique
Electronics Forum | Thu Oct 16 09:41:52 EDT 2003 | russ
I believe that this is discussed in such documents as MIL STD 105, or other statistical sampling plan specifications. Russ
Electronics Forum | Thu Mar 06 12:15:00 EST 2003 | msivigny
Hello Dave, First you must make sure your measurement system is calibrated for accuracy, repeatability and reproducibility. We perform a standard GR&R Study on our CmController system on a regular basis to ensure that the system itself is capable to
Electronics Forum | Tue Apr 17 08:54:09 EDT 2001 | davef
Process capability indices are pretty well documented. Consider: 1 A good general SPC book like: Statistical Quality Control; EL Grant & RS Leavenworth; Mcgraw-Hill; ISBN 0078443547 2 Other good books are: Statistical Process Control For SMT; WS
Electronics Forum | Thu May 03 17:34:57 EDT 2001 | oscar mendez
Does any one experienced problems on BGA voids related to height of chip (placement), and also another question, Does any one has some statistical process control for the BGA soldering process? if the answer is yes, I'd like to have advice from you.
Electronics Forum | Wed Jan 31 20:11:32 EST 2001 | davef
"Statistical Process Control for Surface Mount Technology" (0967503396) William S. Messina, Ph.D., President, Data Sleuths, 8311 Via de Ventura #2075 Scottsdale, AZ 85258: 602-321-0549 Fax: 480-348-9636 datasleuth@yahoo.com
Electronics Forum | Wed Mar 25 06:39:58 EST 1998 | Iuri
I'm collrcting data about all the companies which are using SMD machines made by FUJI. I need this data for my statistics. Thank you Write me to e-mail georgesh@virtue.co.il
Electronics Forum | Wed May 22 12:32:49 EDT 2002 | pwrgroup
which stencil vendor can deliver aspect ratio and area ratio and the statistical information to the user?It's difficult if the pad is modified.
Electronics Forum | Tue Sep 03 14:18:49 EDT 2002 | dragonslayr
Jersbo- I will refer you to the late, Great Mark Twain, who once wrote: "There are 3 kinds of lies in this world - Lies Damn Lies and Statistics"