How do you calculate PCB test yield?

Divide boards passing first-pass test by total boards tested, then multiply by 100. With 925 of 1,000 boards passing, yield is 92.5%.

What is a good first-pass PCB test yield?

For mature gaming hardware SMT lines, 95-99% first-pass is typical; complex multi-connector boards may run lower. At 92.5% against a 97% target, this line is 4.5 points short and worth investigating.

What does the gap to target mean?

It's the difference between your actual yield and your target. Here 92.5% minus 97% is a 4.5-point gap, meaning about 45 extra boards per thousand are failing first pass versus goal.

First-pass yield vs final yield — what's the difference?

First-pass yield counts only boards that pass on the first attempt. Final yield includes boards that pass after rework and retest. First-pass is the better process-health signal because rework hides defects.

Why is my PCB test yield dropping?

Common causes are solder paste issues, component placement drift, a worn test fixture, marginal connectors, or a bad reel. A sudden 4.5-point gap to target usually points to one assignable cause rather than general noise.

How many boards failed in this example?

Of 1,000 tested, 925 passed first pass, so 75 boards failed and routed to diagnosis or rework. Closing the 4.5-point gap to target would mean recovering about 45 of those.

Gaming & Entertainment Hardware calculator

PCB Test Yield Calculator

PCB test yield is the share of boards that pass functional or in-circuit test on the first attempt, a core quality metric for any gaming and entertainment hardware line running controllers, mainboards, or RGB driver PCBs. Test and quality engineers watch first-pass yield because every failed board triggers rework, retest, or scrap, all of which erode throughput and margin. A board that fails ICT or boundary-scan on first pass might recover after a touch-up, but the first-pass number is the honest read on how clean your SMT and assembly process really are. Tracking it against a target turns a vague sense of quality into points you can act on.

What this calculator does

Calculate first-pass PCB test yield for controller boards, display drivers, LED controllers, audio boards, power boards, and connected entertainment hardware electronics.
Use it when ICT, functional test, programming, boundary scan, power-on checks, RF checks, or final system test results need to show how many boards pass without rework.
It computes first-pass test yield as passing boards divided by boards tested, and the gap in points to your target yield.

Formula used

PCB test yield rate = PCBs passing first-pass test ÷ PCBs tested × 100
PCB test yield gap to target = calculated rate - target PCB test yield

Inputs explained

PCBs passing first-pass test:
PCBs tested:
Target PCB test yield:

How to use the result

Use it after a test run or shift to gauge SMT and assembly health and to flag when yield drifts below target.
First-pass yield doesn't credit boards that pass on retest after rework, so it can understate final shippable yield on lines with high rework recovery.

Current U.S. benchmarks

Global copper trades at $13,484 per tonne (IMF via FRED, May 2026), up 41.5% in a year, and U.S. industrial electricity averages 8.66 cents per kWh. Both feed electrified-hardware unit economics.
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).

Common questions

How do you calculate PCB test yield? Divide boards passing first-pass test by total boards tested, then multiply by 100. With 925 of 1,000 boards passing, yield is 92.5%.
What is a good first-pass PCB test yield? For mature gaming hardware SMT lines, 95-99% first-pass is typical; complex multi-connector boards may run lower. At 92.5% against a 97% target, this line is 4.5 points short and worth investigating.
What does the gap to target mean? It's the difference between your actual yield and your target. Here 92.5% minus 97% is a 4.5-point gap, meaning about 45 extra boards per thousand are failing first pass versus goal.
First-pass yield vs final yield — what's the difference? First-pass yield counts only boards that pass on the first attempt. Final yield includes boards that pass after rework and retest. First-pass is the better process-health signal because rework hides defects.
Why is my PCB test yield dropping? Common causes are solder paste issues, component placement drift, a worn test fixture, marginal connectors, or a bad reel. A sudden 4.5-point gap to target usually points to one assignable cause rather than general noise.

Last reviewed 2026-05-12.