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Industrial Engineering & Manufacturing vocabulary · Quality Control and Assurance

First pass yield

Meaning in industrial engineering & manufacturing, with examples

nounCommon term

In industrial engineering & manufacturing, first pass yield means: The percentage of units that come out of a process right the first time, with no rework, repair or scrap. Shortened to FPY.

In Turkish: ilk geçiş verimi, ilk seferde doğru oranı

How it is used

A quality KPI shown next to scrap and defect rates. If 1,000 units start and 920 pass without any rework, FPY is 92%. For a line with several steps, rolled throughput yield (RTY) multiplies the FPY of each step.

Example sentences

  1. First pass yield at the end-of-line test went up from 88% to 96% after the software fix.

  2. Our first pass yield looks good on paper, but many units are quietly repaired before final inspection.

Common collocations

  • improve first pass yield
  • FPY target
  • rolled throughput yield
  • right first time
  • defectA fault in a product or part that means it does not meet its specification, such as a scratch, a crack, a wrong dimension or a missing component.
  • reworkExtra work done to correct a defective product so that it meets the specification, instead of scrapping it. It is also a verb meaning to do this work.
  • scrapMaterial or parts that are defective or left over and cannot be used or repaired, so they are thrown away or recycled. As a verb, to throw such parts away.
  • quality controlThe work of checking products and processes against set standards to find defects and keep quality at the required level. Often shortened to QC.

More terms: Quality Control and Assurance

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