How do you calculate module rework cost?

Multiply modules by per-module cost by recovery rate, then add fixed diagnosis. For 15 modules at $1,850, 85% recovery, plus $2,400 teardown: 15x1850x0.85 = $23,587.50 variable + $2,400 = $25,987.50 total.

What is the cost per module reworked?

Divide total by module count. Here $25,987.50 across 15 modules is $1,732.50 per module — notably close to the $1,850 base because the 85% recovery discount is offset by the shared $2,400 teardown.

Should I rework or scrap a failed module?

Compare the per-module rework cost against the replacement module price. At $1,732.50 per module, if a new module lands under that after freight and lead time, scrap-and-replace wins.

Why does recovery rate matter so much?

Recovery rate is the fraction of rework effort that yields a shippable module. At 85% you are effectively paying full teardown and labor while 15% of the value walks out, which is why the fixed $2,400 hits per-unit cost hard on small batches.

What is the fixed cost adder in rework?

It is the diagnosis, teardown, and setup that a rework batch needs regardless of quantity — $2,400 here. Spread across 15 modules it adds $160 per module; across 50 it would nearly vanish.

How do I lower module rework cost?

Raise recovery rate, batch modules to dilute the $2,400 fixed diagnosis, and attack root cause so fewer modules ($1,850 each in variable spend) enter rework at all.

Semiconductor Fab Equipment Manufacturing calculator

Module Rework Cost Calculator

Module Rework Cost captures the real spend to recover failed subassemblies — gas panels, EFEM modules, RF match networks — back into shippable condition, including the fixed diagnosis effort that every rework batch carries. Quality and repair-cell managers in semiconductor capital equipment use it to decide whether reworking beats scrapping and to load rework dollars into product cost. It matters because rework hides labor, replacement parts, and teardown time that never appear on a standard BOM, and a low recovery rate quietly makes each saved module very expensive. The tool splits variable rework spend from the fixed diagnosis adder so you see both the batch cost and the true cost per module.

What this calculator does

Estimate the cost of reworking failed subassemblies during semiconductor fab equipment manufacturing.
A tool build manager facing leak or alignment failures uses it to size the rework spend on a batch of pulled modules.
Computes total module rework cost as modules times per-module cost times recovery rate, plus a fixed diagnosis and teardown charge, then divides by module count for cost per module.

Formula used

Total rework cost = modules reworked x rework cost per module x recovery rate% + diagnosis
Cost per module = total rework cost / modules reworked

Inputs explained

Modules sent to rework:
Rework labor & parts per module:
Rework recovery success rate:
Diagnosis & teardown cost:

How to use the result

Use it when deciding rework versus scrap, pricing warranty or NPI rework, or setting a rework-cell budget for a build.
The recovery rate scales the variable cost as a capture factor, so unrecovered modules still consume the fixed teardown but this model does not separately book their scrap value.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).
The U.S. has 11,261 computer and electronic products establishments employing about 815,443 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate module rework cost? Multiply modules by per-module cost by recovery rate, then add fixed diagnosis. For 15 modules at $1,850, 85% recovery, plus $2,400 teardown: 15x1850x0.85 = $23,587.50 variable + $2,400 = $25,987.50 total.
What is the cost per module reworked? Divide total by module count. Here $25,987.50 across 15 modules is $1,732.50 per module — notably close to the $1,850 base because the 85% recovery discount is offset by the shared $2,400 teardown.
Should I rework or scrap a failed module? Compare the per-module rework cost against the replacement module price. At $1,732.50 per module, if a new module lands under that after freight and lead time, scrap-and-replace wins.
Why does recovery rate matter so much? Recovery rate is the fraction of rework effort that yields a shippable module. At 85% you are effectively paying full teardown and labor while 15% of the value walks out, which is why the fixed $2,400 hits per-unit cost hard on small batches.
What is the fixed cost adder in rework? It is the diagnosis, teardown, and setup that a rework batch needs regardless of quantity — $2,400 here. Spread across 15 modules it adds $160 per module; across 50 it would nearly vanish.

Last reviewed 2026-05-12.