Method of estimating the reliability of module circuits

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element

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39518301, G01R 3126

Patent

active

057640734

ABSTRACT:
A method for estimating the reliability of modular circuits by conducting an accelerated life test of components comprising a modular circuit, applying the acceleration factor, etc. on test data thus obtained, and calculating a time to reach a predetermined rate of deterioration as the life time. By adding actual working conditions to the rate of deterioration, a minimum value for determining the deterioration of characteristics is obtained. A component having a value not higher than the minimum value or a rate not lower than the characteristic rate of degradation is then mounted on a printed circuit board comprising the modular circuit, to confirm whether the modular circuit functions normally.

REFERENCES:
patent: 5196354 (1993-03-01), Ohtaka et al.
patent: 5426375 (1995-06-01), Roy et al.

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