Electronics Forum | Tue Sep 04 14:13:56 EDT 2001 | mparker
Brian - do you have any more info regarding the in-process DPMO? Is there a working standard number to reference? What commitee is working on this?
Electronics Forum | Wed Sep 05 08:22:48 EDT 2001 | davef
Jack Crawford, IPC Director of Assembly Standards and Technology says "IPC-7912 is used for end-item DPMO calculation; one gathering of DPMO data at the end of the entire assembly process. IPC-9261 will be used throughout the manufacturing process so
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
Electronics Forum | Wed Oct 24 11:57:17 EDT 2001 | mparker
http://www.ceeris.com/DPMO.htm Ceeris is a company that may help you. They collect data and publish benchmark results. Their DPMO report will give you the data you need, for each process step. It's not cheap- they want $3000 per copy. Beyond that,
Electronics Forum | Fri Apr 06 17:06:43 EDT 2012 | joeherz
Hello, We have been tracking our SMT quality levels using DPMO which has been a great way to monitor our process with a huge variation in products we build (we're an low vol/high mix EMS provider). We are now looking at implementing the same scheme
Electronics Forum | Thu Jul 18 15:20:17 EDT 2002 | dragonslayr
I suggest following the standards developed by IPC for DPMO (go to IPC. org for more info) Create your own benchmark, within your own environment, for the specific PCA, then do trend analysis, 6 sigma improvements, etc. For a rule of thumb benchmark
Electronics Forum | Wed Oct 29 07:52:42 EDT 2008 | ikonify
Thanks Dave, did send an email to this site as wanted some industy standard PPM levels but my email bounced back. Will give it another go. Thanks for taking the time to reply !!! Steve.
Electronics Forum | Thu Nov 09 22:21:18 EST 2006 | John S.
I would think it would be more productive to compare DPMO. Particularly across different products. A simple board of 20 components should yield much higher than a complex board of 200 components. Also, some consideration should be given to the dif
Electronics Forum | Fri Mar 07 10:55:51 EST 2008 | slthomas
Not sure if you need help with the calculations or the application, so from the beginning: d=defective parts, p=number of parts, dpm=defects per million parts In a nutshell, d/p=dpm/1000000, so dpm=d/p*1000000 We use dpmo (defects per million op
Electronics Forum | Tue Sep 04 13:41:52 EDT 2001 | Brian W.
IPC7912 deals with the end result, ie an OEM getting boards from a contract manufacturer. I have a friend who is sitting on these committees. He tells me there is a new standard due out for actually doing in-process DPMO. From a process standpoint
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