How to Calculate Overall FPY (First Pass Yield)

S

sleepysophie

Hello,
How should I calculate the daily overall First Pass Yield for a manufacturing set-up with 12 process/test stations.

Also, the product don't normally undergo all stations in a day. Should it be computed as = No. of failures/No. of products passed Station 1?

I appreciate any help. Thanks!
 

Bev D

Heretical Statistician
Leader
Super Moderator
Re: How to Calculate Overall FPY (First Pass Yeild)

Calculate FPY for each station: #failing at station/(#passing + #failing)
Multiple the FPY for each station to get the total FPY (aka rolled throughput yield, RTY)

Use what ever frequency makes sense for your business. Daily weekly or monthly.
 
S

sleepysophie

Re: How to Calculate Overall FPY (First Pass Yeild)

Thanks Bev. Now, I need to figure out the process scans used to calculate the FPY. I'm new to the company and I want to see how their Quality software works.
 
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