Semiconductor Advanced Packaging & Test worked example

Flip Chip Yield at 68% target flip chip yield: a worked example

Suppose target flip chip yield falls to 68%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate flip chip yield for semiconductor advanced packaging and test using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.

The inputs for this scenario

  • Good flip chip units passing: 8 count (held at the documented default)
  • Total flip chip units assembled: 250 count (held at the documented default)
  • Target flip chip yield: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Flip chip yield rate = flip chip yield count ÷ total flip chip yield population × 100.
  • Flip chip yield rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Flip chip yield gap to target works out to 64.8 points at these inputs.
  • Flip chip yield count works out to 8 count at these inputs.
  • Total flip chip yield population works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target flip chip yield sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • It computes flip chip yield as good units over total assembled, times 100, and the point gap to your target yield. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Flip chip yield rate: 3.2 % (headline result)
  • Flip chip yield gap to target: 64.8 points
  • Flip chip yield count: 8 count
  • Total flip chip yield population: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Flip Chip Yield calculator, set target flip chip yield to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.