Downloaded from https://www.everyspec.com ADS-79D-HDBK TABLE I-II.
Sample size requirement for reliability demonstration via accept-reject tests 155 Minimum Reliability Goal to be Demonstrated Confidence Level R = 0.75 R = 0.80 R = 0.85 R = 0.90 R = 0.95 R = 0.99 L1 L1 L1 L1 L1 L1 1 1 N r R U1 N r R U1 N r R U1 N r R U1 N r R U1 N r R U1 Minimum Reliability Goal to be Demonstrated Confidence Level R = 0.75 L1 R = 0.80 L1 R = 0.85 L1 R = 0.90 L1 R = 0.95 L1 R = 0.99 L1 1 1 N r R U1 N r R U1 N r R U1 N r R U1 N r R U1 N r R U1 5 0 0.9441 75% 75% 10 15 20 24 29 1 2 3 4 5 0.9036 0.8837 0.8716 0.8576 0.8524 8 0 0.9725 10 0 0.9779 16 0 0.9862 32 0 0.9931 80% 80% 14 21 27 33 39 1 2 3 4 5 0.9407 0.9261 0.9138 0.9051 0.8984 19 28 36 44 52 1 2 3 4 5 0.9564 0.9447 0.9355 0.9291 0.9241 29 42 54 66 78 1 2 3 4 5 0.9715 0.9632 0.9572 0.9529 0.9496 59 85 110 134 157 1 2 3 4 5 0.9861 0.9819 0.9791 0.9769 0.9751 9 0 0.9821 12 0 0.9865 19 0 0.9915 37 0 0.9956 85% 85% 16 23 29 35 41 1 2 3 4 5 0.9569 0.9413 0.9285 0.9191 0.9116 22 31 39 47 55 1 2 3 4 5 0.9687 0.9566 0.9471 0.9399 0.9344 33 46 59 72 84 1 2 3 4 5 0.9792 0.9709 0.9651 0.9611 0.9673 67 94 119 144 169 1 2 3 4 5 0.9898 0.9858 0.9828 0.9806 0.9769 11 0 0.9905 15 0 0.9931 22 0 0.9952 45 0 0.9977 90% 90% 18 25 32 38 45 1 2 3 4 5 0.9701 0.9551 0.9444 0.9346 0.9284 25 34 43 52 60 1 2 3 4 5 0.9785 0.9671 0.9588 0.9525 0.9466 38 52 65 78 91 1 2 3 4 5 0.9858 0.9786 0.9729 0.9685 0.9651 77 105 132 158 184 1 2 3 4 5 0.9931 0.9895 0.9867 0.9845 0.9828 14 0 0.9963 19 0 0.9973 29 0 0.9982 59 0 0.9991 95% 95% 22 30 37 44 50 1 2 3 4 5 0.9836 0.9722 0.9622 0.9541 0.9464 30 40 50 59 68 1 2 3 4 5 0.9881 0.9792 0.9722 0.9661 0.9609 46 61 76 89 103 1 2 3 4 5 0.9922 0.9865 0.9818 0.9776 0.9743 93 124 153 181 208 1 2 3 4 5 0.9962 0.9934 0.9911 0.9891 0.9874 459 0 0.999978 662 1 0.999775 838 2 0.9962 99% 99% 3 4 5 n = Total Number of Single Sample CI/HI Readings on Separate Components r = Number of Failed Sample CI/HI Readings R = Maximum Designed-In Reliability of the CI/HI U1 R = Minimum Demonstrated Reliability of the CI/HI L1 99% 99% 662 838 1 2 3 4 5 0.999775 0.9962