process defects software

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Hi, i try to collect data for solder wave process defects... - Mar 07, 2008 by iv40

Not sure if you need help with the calculations or the appli... - Mar 07, 2008 by Steve Thomas

I'm looking for the dance video our QC Dept. uses each time ... - Mar 10, 2008 by Real Chunks

I'll bet our QC department produced that dance video! Combi... - Mar 10, 2008 by Hegemon

Or Fox's next big hit game show. ... - Mar 10, 2008 by Real Chunks

Here's a cheer I found on the ASQC Website. "Quality Chee... - Mar 11, 2008 by Dirk Nuendyke

iv40

#53935

process defects software | 7 March, 2008

Hi,

i try to collect data for solder wave process defects, but I dont know how I must calculate these data.Can anyone help me - may be there nave some free software for this.I want to calculate how many ppm is our deffects.And, how is acceptable range of defects for SW process. Thanks

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Steve Thomas

#53938

process defects software | 7 March, 2008

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 opportunities). The number of parts is included, but it also includes lead counts, part orientation, and whatever other criteria you wish to include. We are monitoring our stuff process at the same time.

There are a couple of IPC standards that can help you apply these methods. Search "dpmo" in the archives for a LOT more information.

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Real Chunks

#53944

process defects software | 10 March, 2008

I'm looking for the dance video our QC Dept. uses each time they find a defect. It's very catchy and trendy.

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Hegemon

#53952

process defects software | 10 March, 2008

I'll bet our QC department produced that dance video! Combine that with some buzzword bingo and you have a real party! Wait a sec.... Trendy, Trend... uh.. BINGO!

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Real Chunks

#53953

process defects software | 10 March, 2008

Or Fox's next big hit game show.

reply »

Dirk Nuendyke

#53971

process defects software | 11 March, 2008

Here's a cheer I found on the ASQC Website.

"Quality Cheer" by QC McSnigglets

Who found it? WE DID!