Electronics Manufacturing worked example
Die Per Wafer at 99% usable die yield: a worked example
Push usable die yield up to 99% and the picture changes. This example computes every intermediate figure at that operating point. a semiconductor estimator needs die-per-wafer for cost or capacity planning
The inputs for this scenario
- Candidate die count: 36,000 die (unchanged)
- Wafers represented: 25 wafers (unchanged)
- Usable die yield: 99 % (raised for this scenario; the documented default is 92)
Working through the calculation
- Applying the documented formula (Candidate die per wafer = candidate die count รท wafers represented) to the inputs above produces each figure below.
- At this operating point the engine returns 1,426 die / wafer for effective die per wafer, the number this scenario is built around.
- At this operating point the engine returns 1,440 die / wafer for candidate die per wafer.
- At this operating point the engine returns 35,640 die for usable die count.
- At this operating point the engine returns 25 wafers for wafers represented.
How this compares with the baseline
- Against the tool's baseline example, where usable die yield sits at 92% and the headline result is 1,325 die / wafer, this scenario comes in 7.61% above the baseline at 1,426 die / wafer.
- It computes candidate (gross) die per wafer from a die count and wafer set, then multiplies by usable yield to give effective good die per wafer. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.
Results at a glance
- Effective die per wafer: 1,426 die / wafer (headline result)
- Candidate die per wafer: 1,440 die / wafer
- Usable die count: 35,640 die
- Wafers represented: 25 wafers
Run it with your numbers
- Every input above is editable in the live Die Per Wafer calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.