The manner which reduces the number of samples in high-speed reliable confirmatory test

摘要

(57) Abstract The application program and the computer & the system which decide the number W of samples which are needed for the high-speed test of the product, in the product like process and below the number N of test iterations which stipulate process and the high-speed test period which choose the reliability level CL which is appropriate vis-a-vis the preciseness which is needed from the result of process and the high-speed test which choose reliable target R as appropriate ones _t is chosen process, and the product sample W which calculate the number W of samplesfor high-speed test N _t iterating number testing, test breaking observes over the number of N _t test iterations,When it is not done, the application program of the process which verifies the reliability which is needed is included. Also the manner which decides the number of N _t iterations which are needed for the high-speed test of the product which has operation life is stated. When in, breaking is observed within the number of N _t test iterations/time either of the above-mentioned manners, the number of test iterations/time being able to be extended at least to 2N _t, new reliable level like below it is calculated. The reliability R for product design plan, is verified to the case where it is larger than the Clmin value which specifies as the smallest reliability level which new reliability level CL _NEW is needed for high-speed ON test method.