Electronics Manufacturing worked example
Wafer Cost Per Die with total wafer lot cost of 62,500 $: a worked example
Here is what the math looks like when conditions slip. We hold every other input steady and drop total wafer lot cost to 62,500 $, then walk the calculation through step by step. Convert wafer lot cost into cost per good die.
The inputs for this scenario
- Total wafer lot cost: 62,500 $ (the input this scenario stresses; the baseline uses 125,000)
- Good die count: 48,200 die (held at the documented default)
- Conversion or allocation factor: 1 x (held at the documented default)
Working through the calculation
- The calculation starts from the formula this tool documents: Unadjusted cost per good die = total wafer lot cost รท good die count.
- Wafer cost per good die works out to 1.3 $ / die at these inputs, and this is the headline figure for the scenario.
- Unadjusted cost per good die works out to 1.3 $ / die at these inputs.
- Conversion or allocation factor works out to 1 x at these inputs.
- Good die count works out to 48,200 die at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where total wafer lot cost sits at 125,000 $ and the headline result is 2.59 $ / die, this scenario comes in 50% below the baseline at 1.3 $ / die.
- The practical read: the gap between this scenario and the baseline is entirely attributable to total wafer lot cost, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes the good die count and lot cost are on the same basis; it does not itself derive yield or back-end assembly, test, and package costs, which must be added separately.
Results at a glance
- Wafer cost per good die: 1.3 $ / die (headline result)
- Unadjusted cost per good die: 1.3 $ / die
- Conversion or allocation factor: 1 x
- Good die count: 48,200 die
Run it with your numbers
- To rerun this with your own numbers, open the live Wafer Cost Per Die calculator, set total wafer lot cost to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.