Die Per Wafer & Murphy Yield Calculator
Semiconductor fab economics & defect metrology: Compute gross die per wafer (DPW), defect-limited chip yield (Murphy, Seeds, and Poisson models), and net good die.
Wafer Size & Die Dimensions
Yield & Production Capacity
Recommended Tools & Equipment
Tested hardware and components for high reliability
Frequently Asked Questions
Why have semiconductor architectures transitioned toward chiplets?
Because yield decreases exponentially with die area (Y ∝ exp(-D0 · A)), large monolithic GPUs or server CPUs (> 600 mm²) suffer catastrophic yield losses. Breaking a massive chip into four or eight smaller chiplets (e.g. 80 mm² each) connected on a silicon interposer increases net good silicon yield from ~30% to over 85%.
What is a "killer defect"?
Not all physical particles cause electrical failures. A killer defect is a particle, short circuit, or gate dielectric pinhole located in an electrically active region of the circuit that renders the entire die non-functional.
How does wafer edge exclusion affect DPW?
The outer 2 to 3 mm rim of a silicon wafer undergoes intense robotic clamping, chemical edge-bead removal, and non-uniform chemical mechanical planarization (CMP). Dies overlapping this exclusion zone are discarded.