SEPARATION METHOD OF SEMI-CONDUCTING ITEMS AS TO RELIABILITY Russian patent published in 2009 - IPC G01R31/26 

FIELD: electricity.

SUBSTANCE: invention can be used for separating items as to reliability during manufacture, as well as during incoming inspection at manufacturers of radio electronic equipment. In representative sampling there measured is informative parametre value of the item prior to the beginning of tests, after mechanical actions, after effects of electrostatic discharges (ESD) and after temperature annealing, and separation as to reliability is performed based on coefficient of informative parametre relative variation, which is calculated by the formula: where A_initial, A_esd, A_mechanical, and A_annealing are measured values of informative parametre in initial state, after ESD effect, after mechanical effects, and after temperature annealing accordingly.

EFFECT: improving accuracy and enlarging functional capabilities of test methods.

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