Die Cost From Wafer Calculator

Divide the wafer cost by the good dies per wafer to obtain the cost per good die. Formula: C_good [EUR] = C_wafer [EUR] / (N_gross · Y [%]/100), where N_gross is gross dies per wafer and Y is the die yield. Inputs: C_wafer > 0 EUR, N_gross ≥ 1 integer, and 0 < Y ≤ 100 %. Output: C_good > 0 EUR. Assumes uniform yield and that wafer cost amortizes only over good dies.

Description

Die Cost From Wafer Calculator is a focused tool for the following task. Divide the wafer cost by the good dies per wafer to obtain the cost per good die. Formula: C_good [EUR] = C_wafer [EUR] / (N_gross · Y [%]/100), where N_gross is gross dies per wafer and Y is the die yield. Inputs: C_wafer > 0 EUR, N_gross ≥ 1 integer, and 0 < Y ≤ 100 %. Output: C_good > 0 EUR. Assumes uniform yield and that wafer cost amortizes only over good dies. It reports Cost per good die from the values you provide rather than inventing measurements, coefficients, or professional judgment that are not part of the input.

When to use Die Cost From Wafer

Use this semiconductor calculation for first-order device, material, fabrication, interconnect, packaging, or reliability estimates when every coefficient and unit convention is known.

Wafer cost (EUR): Required number in EUR. Total wafer cost. Must be greater than 0 EUR.
Gross dies per wafer: Required integer. Gross dies per wafer. Must be a safe integer at least 1.
Die yield (%): Required number in %. Die yield percentage. Must be greater than 0 and at most 100.

The cited overview of Wafer (electronics) supplies background for the terminology and domain context used by this tool.^[1]

How Die Cost From Wafer works

Cost per good die (EUR): Returned number in EUR. Cost per good die. At least 0 EUR.

Limitations and assumptions

Material composition, geometry, process history, temperature, electric field, bias, interfaces, parasitics, and fitted parameter ranges can invalidate a compact semiconductor model.
Wafer cost must be at least 5e-324.
Gross dies per wafer must be at least 1.
Die yield must be at least 5e-324.
Die yield must be no greater than 100.
Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Alternative or Complementary approaches

Compare the estimate with measured process data, current device documentation, and a higher-fidelity circuit, field, thermal, quantum, or TCAD model when the decision requires it.

References

Wafer (electronics) — Wikipedia contributors

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