Enter the wafer diameter and the die area into the calculator to estimate the dies per wafer.
- Total Manufacturing Cost Calculator
- Direct Labor Costs Calculator
- PPM Calculator
- Blow Up Ratio Calculator
- All Math and Numbers Calculators
- Casting Yield Calculator
Die Per Wafer Formula
The following approximation is commonly used to estimate the dies per wafer from wafer diameter and die area.
DFW \approx \frac{\pi d^{2}}{4S} - \frac{\pi d}{\sqrt{2S}}- Where DFW is the estimated dies per wafer
- d is the wafer diameter (a length unit)
- S is the die area (a matching area unit; e.g., if d is in mm, then S is in mm²)
Die Per Wafer Definition
Dies per wafer is the estimated number of complete semiconductor dies that can be cut (diced) from a circular wafer, based on the wafer diameter and the die area. This is an estimate and does not account for factors like scribe lanes, edge exclusion, and yield loss.
Die Per Wafer Example
How to calculate die per wafer?
- First, determine the diameter of the wafer.
Calculate the wafer diameter.
- Next, determine the die size (square area)
Calculate the size of the die.
- Finally, calculate the die per wafer.
Use the formula above to calculate the die per wafer.
FAQ
What is a die per wafer?
Dies per wafer is the estimated total number of complete dies that can be diced from a single wafer.
