How do you calculate wire bond workload time?

Divide the bond count by the bonder throughput to get base time, then multiply by the allowance factor. With 120 bonds at 12 bonds/min and a 10% allowance, base time is 10 hours and required time rounds to 11 hours.

Why is the required time higher than the base time?

The base 10-hour figure is pure bonding; the 10% allowance adds machine indexing, magazine changes, capillary swaps, and minor stops, lifting it to about 11 hours.

What is a good wire bonder throughput?

Modern high-speed ball bonders run 10-20+ bonds per second on fine-pitch work; the 12 units/min default here is a conservative planning rate that folds in loop and search time rather than peak speed.

Does this cover copper wire bonding too?

Yes, but copper needs forming gas and tighter process windows, so its effective throughput is often lower than gold. Lower the throughput input to reflect your copper recipe.

How should I set the allowance percentage?

Start at 10-15% for a mature, high-volume recipe and 20-30% for new products or frequent magazine changes. It should absorb setup, handling, and expected micro-stops.

Wire bond workload vs. UPH planning: which is better?

This tool gives you machine hours for one lot; units-per-hour is better for steady-state line balancing. Use this for lot-level scheduling and UPH for annual capacity models.

Semiconductor Advanced Packaging & Test calculator

Wire Bond Workload Calculator

Wire Bond Workload estimates how long a lot will occupy a gold or copper ball bonder once you account for real-world setup, indexing, and downtime. Assembly engineers and OSAT capacity planners use it to size die-attach-to-bond queues, quote turnaround, and decide when a second bonder head is needed. In advanced packaging, wire bond throughput is often the pacing operation ahead of mold, so getting this number right protects the whole assembly line schedule. It converts a raw bond count and bonds-per-minute rate into a realistic machine-hour figure.

What this calculator does

Estimate wire bond workload for semiconductor advanced packaging and test using production-ready inputs so teams can plan labor hours, schedule the work, or check whether the job fits the available shift time.
Use it when wire bond workload in semiconductor advanced packaging and test is changing rate or allowance and you want to see the impact.
It computes the required wire bonder occupancy time in hours for a lot given its bond count, throughput, and an allowance uplift.

Formula used

Base wire bond workload time = wire bond workload workload ÷ wire bond workload completion rate
Required wire bond workload time = base wire bond workload time × allowance factor

Inputs explained

Wire bonds to place this lot:
Wire bonder throughput (bonds placed):
Setup, indexing, and downtime allowance:

How to use the result

Use it when planning bonder capacity, quoting assembly lead time, or checking whether a lot fits inside a shift on a single bond head.
It assumes one steady throughput rate; wire-per-second speeds vary sharply with loop profile, pad pitch, and metallurgy, so validate the rate against your actual recipe.

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).
The producer price index for plastic resins and materials stands at 319.371 (BLS, May 2026), up 19.5% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The producer price index for paperboard and containers stands at 276.831 (BLS, May 2026), up 8.8% from a year earlier. Quotes priced off last quarter's material cost miss this move.
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 wire bond workload time? Divide the bond count by the bonder throughput to get base time, then multiply by the allowance factor. With 120 bonds at 12 bonds/min and a 10% allowance, base time is 10 hours and required time rounds to 11 hours.
Why is the required time higher than the base time? The base 10-hour figure is pure bonding; the 10% allowance adds machine indexing, magazine changes, capillary swaps, and minor stops, lifting it to about 11 hours.
What is a good wire bonder throughput? Modern high-speed ball bonders run 10-20+ bonds per second on fine-pitch work; the 12 units/min default here is a conservative planning rate that folds in loop and search time rather than peak speed.
Does this cover copper wire bonding too? Yes, but copper needs forming gas and tighter process windows, so its effective throughput is often lower than gold. Lower the throughput input to reflect your copper recipe.
How should I set the allowance percentage? Start at 10-15% for a mature, high-volume recipe and 20-30% for new products or frequent magazine changes. It should absorb setup, handling, and expected micro-stops.

Last reviewed 2026-05-12.