PFMEA - Looking for a table with Human Factors

H

HermanB

#1
Hello,

For a PFMEA i am looking for a table with human factors.
Severity, Occurrence and Non-detection.

for example visual inspection, touch-up, ...etc
And off cause other processes in the electronics production.

Are there standard statistical ratings ?

Thanks.

Regards,
Herman

:confused:
 
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Jim Wynne

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#2
HermanB said:
Hello,

For a PFMEA i am looking for a table with human factors.
Severity, Occurrence and Non-detection.

for example visual inspection, touch-up, ...etc
And off cause other processes in the electronics production.

Are there standard statistical ratings ?

Thanks.

Regards,
Herman

:confused:
I think "off cause" was supposed to be "of course"? I don't know of any published data regarding the relative likelihood of different types of human errors in PCB manufacturing, if that's what you're referring to. Although such data might be interesting and useful from a process design standpoint, you have to beware of the nature of averages and realize that you might have people who are more prone to certain types of errors than the general population. That's one reason it's best to use your own historical data when assigning values to RPN factors.
If such data exists, I think manufacturers of machine vision and other automated equipment might be the best (although hardly unbiased) source, because they're the ones who can use the data to sell things.
 
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