Typical first pass yield in electronics

I'm a mechanical engineer and we buy electronic pressure sensors and switches. In doing quality audits, I need to understand what "best practice" will yield in terms of conforming product first time through the manufacturing process? Any data out there? What is first pass yield in electronic circuits?

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On circuit board assemblies first pass yields need to be above 98%, if a supplier is below this level it is a indication that: he has poor control of the manufacturing process; Poor component selection (price over quality; excepted a poor design from the engineering group. If the first pass yields at his plant are below 98% for a complex assembly ie: computer mother board, it is costing you money to do business with them. Once the product reaches your location it should be a ship to stock confidence level. Let me know if I can be of more help

| I'm a mechanical engineer and we buy electronic pressure sensors and switches. In doing quality audits, I need to understand what "best practice" will yield in terms of conforming product first time through the manufacturing process? Any data out there? What is first pass yield in electronic circuits? |

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