Reliability Toolkit

DPPM / PPM Sample Size Calculator

Estimate the sample count needed to support a DPPM quality target with zero observed defective units.

Engineering inputs

Assumes the same independent defect probability for every sample. Supported range: 0.01 to 100000.

Supported range: 50 to 99.999.

Use only when all inspected units passed. Supported range: 1 to 2e+09. Whole numbers only.

Results

Your calculation

Enter the inputs and select Calculate.

Model notes

Independent Bernoulli samples at a common defect probability. Exactly zero defects is the acceptance condition; the result is not a general acceptance sampling plan.

Further reading

Book References

Practical Reliability Engineering

Patrick D. T. O'Connor and Andre V. Kleyner

5th Edition. Wiley, 2012.

ISBN 9780470979822

Book details