How do you calculate first-pass yield?

Divide the sensors passing first test by the total sensors tested and multiply by 100. For 235 of 250 sensors passing, that is 235 / 250 x 100 = 94% first-pass yield.

What is a good first-pass yield for pressure sensors?

Mature, well-controlled pressure sensor lines often run 95-99% first-pass yield. At 94% against a 96% target, the example lot is 2 points short — close, but worth a look at the dominant failure mode before it drifts further.

What is the difference between first-pass yield and final yield?

First-pass yield counts only units that pass on the first attempt with no rework. Final yield includes units that pass after rework or retest. A wide gap between the two signals a rework-heavy process that hides its true cost.

How do I interpret the gap to target?

The gap is your yield minus the target in points. A positive gap means you are beating target; a negative gap, like the example's -2 points (shown as a 2-point shortfall), means you missed and should investigate the leading defect.

Why use first-pass yield instead of just scrap rate?

Scrap rate ignores units that were reworked back to passing, so it understates process variation. First-pass yield captures every unit that did not pass clean the first time, making it a far more sensitive early-warning metric.

How many sensors should I test before trusting the yield number?

With only a handful of units, a single failure swings the percentage wildly. A lot of 250 like the example gives a stable read; for tighter targets, accumulate several hundred units before reacting to small movements.

Industrial Sensors & Instrumentation calculator

Pressure Sensor First-Pass Yield Calculator

First-pass yield is the share of pressure sensors that pass functional test on the first attempt with no rework, and it is one of the cleanest signals of process health on an instrumentation line. Quality engineers and production managers track it to catch drift in the sensing element, bonding, or trim steps before scrap and rework costs pile up. This calculator also computes the gap to your target yield, so you instantly see whether a lot meets the bar or needs investigation. For pressure sensors specifically, where calibration trim and burst margin drive failures, first-pass yield is the metric that separates a controlled process from a leaky one.

What this calculator does

Calculate first-pass yield for pressure sensor production by comparing units passing all accuracy, linearity, and hysteresis specs on first test against total units tested.
Use this when tracking pressure sensor production quality, identifying whether yield losses come from diaphragm bonding, signal trimming, or seal failures, and deciding if corrective action is needed.
It computes first-pass yield as a percentage and the point gap between that yield and your target.

Formula used

First-pass yield = sensors passing first test / total sensors tested x 100
Gap to target = first-pass yield - target first-pass yield

Inputs explained

Sensors passing first test:
Total sensors tested:
Target first-pass yield:

How to use the result

Use it after a test run to grade lot quality, track process trends, or trigger a containment review when yield falls short of target.
First-pass yield counts pass/fail only — it does not weight failures by severity or distinguish a unit that barely failed trim from one with a cracked diaphragm.

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 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 first-pass yield? Divide the sensors passing first test by the total sensors tested and multiply by 100. For 235 of 250 sensors passing, that is 235 / 250 x 100 = 94% first-pass yield.
What is a good first-pass yield for pressure sensors? Mature, well-controlled pressure sensor lines often run 95-99% first-pass yield. At 94% against a 96% target, the example lot is 2 points short — close, but worth a look at the dominant failure mode before it drifts further.
What is the difference between first-pass yield and final yield? First-pass yield counts only units that pass on the first attempt with no rework. Final yield includes units that pass after rework or retest. A wide gap between the two signals a rework-heavy process that hides its true cost.
How do I interpret the gap to target? The gap is your yield minus the target in points. A positive gap means you are beating target; a negative gap, like the example's -2 points (shown as a 2-point shortfall), means you missed and should investigate the leading defect.
Why use first-pass yield instead of just scrap rate? Scrap rate ignores units that were reworked back to passing, so it understates process variation. First-pass yield captures every unit that did not pass clean the first time, making it a far more sensitive early-warning metric.

Last reviewed 2026-05-12.