Electronics Forum: printed circuit board

Defect Per Unit (DPU) versus DPMO

Electronics Forum | Fri Mar 30 06:58:24 EDT 2007 | ck_the_flip

Alot of QM's and QE's are typically failed Engineers who lack common sense. They don't understand that measuring in DPMO's (versus DPU's) "normalizes" your data for Printed Circuit Board Assemblies (PCBA's) so that if you have 10 defects on a PCBA t

IPC-7912 DPMO

Electronics Forum | Wed May 09 01:40:55 EDT 2001 | Dreamy

Hi Michael, DPMO Index calculation - The total number of defects (Dc + Dp + Dt) on a completed Printed Circuit Board divided by the total number of defect opportunities (Oc + Op + Ot) for that PBA multiplied by 1 million. Your calculation deals only

Re: Component PPM

Electronics Forum | Tue Mar 30 22:19:02 EST 1999 | dean

Does any have any reports on competive Component PPM levels for world class manufacturers ?? I would also like to get any information on the fault spectrum for component mounting. Generally, it is accepted that world class is below 100 DPMO (

I am having a real tough time

Electronics Forum | Wed Dec 10 15:18:44 EST 2003 | Dustin

My name is Dustin Steedman. I have a Direct Hire position available in Michigan. I realize that you may be currently employed. However, I am sending you this email with the hope that you or someone that you know would be interested in this current op

PCB Manufacturing

Electronics Forum | Wed Dec 10 15:21:37 EST 2003 | Dustin

My name is Dustin Steedman. I have a Direct Hire position available in Michigan. I realize that you may be currently employed. However, I am sending you this email with the hope that you or someone that you know would be interested in this current op

Yield on 0402 SMT Printed Circuit Board Assemblies

Electronics Forum | Thu Jan 04 17:04:43 EST 2007 | slthomas

99% good solder joints = 10000 ppm (defects per million opportunities). Having only built with 0603s I can't speak for a target but that still seems pretty harsh....with a 75/25 0805/0603 ratio at my last place of employment I think we were running

Printing on a pallet

Electronics Forum | Thu Sep 25 07:45:41 EDT 2014 | emcglobaltechnologies

Good morning, I hope you are doing well today, please allow me to introduce myself. My name is John Wasserman and I am the Sales Manager for EMC Global Technologies. We manufacture fixtures and tooling for the processing of printed circuit board ass

Yield on 0402 SMT Printed Circuit Board Assemblies

Electronics Forum | Thu Jan 04 20:31:21 EST 2007 | Ben_T

Have you thought about an AOI system? With the system we have where I work, I'm able to run queries that'll tell me DPMO, yield, and pass/fail rates on a board level, part level, and opportunity level. Furthermore, this data can be broken down to see

Re: DPM-Rate for SMT pprocess

Electronics Forum | Tue Oct 06 15:41:14 EDT 1998 | Mike C

Does sombbody know what DPM rate a good and reliable SMT assembly line (incl. solder paste print, assembly and feflow soldering) has? DPM is Defects per million, usually measured on components. We run a process consisting of small to medium b

Books Available to Review at SMTnet

Electronics Forum | Wed May 24 17:49:51 EDT 2000 | Keith Luke

SMTneters, The end of May finds several recent publications from leading publishers on my desk. I am all too happy to share these books with our loyal SMTneters in the hopes that they will provide us with a timely review of the new release. For ma

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