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First Pass Yield

Views: 3169

#57269

First Pass Yield | 13 November, 2008

Hello everyone,

can you tell me hoe you define your first pass yield? In my company it seems that it goes wrong:

1. smt 2. Repair 3. Wave 4. Test(some repairs) 5. FPY

Somehow it looks wrong to me. Should it be separately for all processes or it should be defined without any repairs?

Thanks, Emil

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CJ

#57271

First Pass Yield | 13 November, 2008

I define First Pass yield without any repairs. But I only consider a PCB to need repair if it fails test. Our boards are inspected before testing and any work done before testing, I consider to be rework and is part of the SMT process.

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#57350

First Pass Yield | 20 November, 2008

Have a look in http://www.isixsigma.com/ always found this helpfull.

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