Semiconductor Fab Equipment Manufacturing worked example

Module Rework Cost at 61% rework recovery success rate: a worked example

This worked example runs the module rework cost numbers for a tougher week than the baseline: 61% rework recovery success rate instead of the typical 85%. Estimate the cost of reworking failed subassemblies during semiconductor fab equipment manufacturing.

The inputs for this scenario

  • Modules sent to rework: 15 modules (held at the documented default)
  • Rework labor & parts per module: 1,850 $/module (held at the documented default)
  • Rework recovery success rate: 61 % (the input this scenario stresses; the baseline uses 85)
  • Diagnosis & teardown cost: 2,400 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total rework cost = modules reworked x rework cost per module x recovery rate% + diagnosis.
  • Total module rework cost works out to 19,328 $ at these inputs, and this is the headline figure for the scenario.
  • Module rework cost per unit works out to 1,289 $ / piece at these inputs.
  • Variable module rework cost works out to 16,928 $ at these inputs.
  • Fixed module rework cost adder works out to 2,400 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where rework recovery success rate sits at 85% and the headline result is 25,988 $, this scenario comes in 25.63% below the baseline at 19,328 $.
  • Use it when deciding rework versus scrap, pricing warranty or NPI rework, or setting a rework-cell budget for a build. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total module rework cost: 19,328 $ (headline result)
  • Module rework cost per unit: 1,289 $ / piece
  • Variable module rework cost: 16,928 $
  • Fixed module rework cost adder: 2,400 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Module Rework Cost calculator, set rework recovery success rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.