Semiconductor Advanced Packaging & Test calculator

Package Inspection Load Calculator

Package Inspection Load estimates how long final visual or AOI inspection will take for a lot of assembled packages once handling and reject-review time are included. Quality and test engineers at OSATs use it to staff the inspection station, balance it against upstream bond and mold throughput, and quote turnaround. Because inspection is often the last gate before ship, an accurate load estimate keeps lots from piling up at the end of the line. It converts package count and a checks-per-minute rate into a realistic station-hour figure.

What this calculator does

  • Estimate package inspection load 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 package inspection load in semiconductor advanced packaging and test needs a defensible run time before a quote goes out.
  • It computes required package-inspection time in hours from package count, inspection throughput, and an allowance uplift.

Formula used

  • Base package inspection load time = package inspection load workload ÷ package inspection load completion rate
  • Required package inspection load time = base package inspection load time × allowance factor

Inputs explained

  • Packages to inspect this lot:
  • Inspection throughput (packages checked):
  • Setup, handling, and reject-review allowance:

How to use the result

  • Use it to schedule the inspection station, size headcount, or check that inspection does not bottleneck end-of-line shipping.
  • It assumes one steady inspection rate; lots with high defect density need more reject-review time, so raise the allowance for troubled products.

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 package inspection load? Divide package count by inspection throughput for base time, then multiply by the allowance factor. With 120 packages at 12 per minute and 10% allowance, base is 10 hours and required is about 11 hours.
  • What does the allowance cover in inspection? Tray handling, station setup, and time spent reviewing and dispositioning suspected rejects. Ten percent suits a clean lot; raise it when defect density is high.
  • What is a good inspection throughput? AOI systems inspect far faster than manual review; the 12 units/min default is a conservative planning rate that blends automated checks with manual reject confirmation.
  • Does this include reject rework time? No, only inspection and reject review. Rework and re-inspection are separate operations you should schedule on top of the required inspection time.
  • How is this different from the wire bond workload tool? The math is identical time-from-throughput logic, but this one is tuned to end-of-line inspection with a reject-review allowance rather than bonder setup.

Last reviewed 2026-05-12.