How do you calculate board rework time?

Divide the number of boards needing rework by the rework pace to get base hours, then multiply by one plus the allowance. For 120 boards at 12 boards/hr with a 10% allowance: 120 / 12 = 10 hours base, x 1.10 = 11 hours required.

What does the setup, inspection, and retest allowance cover?

It bundles the non-rework time around each batch: fixture and iron setup, incoming inspection, post-rework AOI or visual check, and retest. Ten percent is a reasonable starting allowance for straightforward solder rework; dense or fine-pitch work runs higher.

Why add an allowance instead of just using rework pace?

Raw pace only counts hands-on rework. In a real depot, setup and retest consume real bench minutes that must be staffed and scheduled. Ignoring them is the single most common reason rework batches run late.

What is a realistic board rework pace?

It depends heavily on defect type. Simple through-hole or single-joint reflow can exceed 12 boards/hr, while BGA reball or multi-component rework may drop below 2 boards/hr. Use measured pace from your own bench, not a vendor figure.

How do I convert rework hours into technicians needed?

Divide required hours by available productive hours per technician per shift. Eleven required hours across a 7.5-hour productive shift means about 1.5 technicians, so two are needed to clear the batch in one shift.

Should the target yield change the rework time?

The target yield doesn't change the hours for the boards already queued, but it tells you whether to expect this rework load again — a low first-pass yield means boards keep coming back and your rework hours compound shift over shift.

Electronics Repair, Refurbishment & Depot Operations calculator

Board Rework Time Calculator

Board rework time estimates the bench hours needed to rework a batch of PCBAs, including the setup, inspection, and retest overhead that raw rework pace ignores. Repair planners and depot supervisors use it to staff the rework bench, quote turnaround to customers, and decide whether a spike in defective boards needs an extra technician or an extra shift. The number matters because rework is the most labor-intensive step in any depot: under-budget the allowance and you blow your committed turnaround time. Getting it right keeps the bench from becoming the bottleneck behind final test.

What this calculator does

Estimate technician hours needed for board-level rework such as solder touch-up, connector repair, trace repair, capacitor replacement, or failed component removal.
Use it when board rework time in electronics repair, refurbishment and depot operations is being added to next week's schedule and you need an honest hours estimate.
It computes the total rework hours for a board batch by dividing quantity by pace and scaling up for setup, inspection, and retest overhead.

Formula used

Base board rework hours = boards requiring rework ÷ board rework pace
Required board rework hours = base board rework hours × allowance factor

Inputs explained

Boards requiring rework: undefined
Board rework pace: undefined
Setup, inspection, and retest allowance: undefined

How to use the result

Use it when scheduling a rework batch, sizing bench staffing, or quoting turnaround on a lot of defective boards.
It assumes a single steady rework pace; mixed defect difficulty or component-level rework on dense boards can swing actual time well beyond the allowance.

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).
U.S. manufacturing runs at 75.6% of capacity (Federal Reserve, May 2026). 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 board rework time? Divide the number of boards needing rework by the rework pace to get base hours, then multiply by one plus the allowance. For 120 boards at 12 boards/hr with a 10% allowance: 120 / 12 = 10 hours base, x 1.10 = 11 hours required.
What does the setup, inspection, and retest allowance cover? It bundles the non-rework time around each batch: fixture and iron setup, incoming inspection, post-rework AOI or visual check, and retest. Ten percent is a reasonable starting allowance for straightforward solder rework; dense or fine-pitch work runs higher.
Why add an allowance instead of just using rework pace? Raw pace only counts hands-on rework. In a real depot, setup and retest consume real bench minutes that must be staffed and scheduled. Ignoring them is the single most common reason rework batches run late.
What is a realistic board rework pace? It depends heavily on defect type. Simple through-hole or single-joint reflow can exceed 12 boards/hr, while BGA reball or multi-component rework may drop below 2 boards/hr. Use measured pace from your own bench, not a vendor figure.
How do I convert rework hours into technicians needed? Divide required hours by available productive hours per technician per shift. Eleven required hours across a 7.5-hour productive shift means about 1.5 technicians, so two are needed to clear the batch in one shift.

Last reviewed 2026-05-12.