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This is an accelerated stress test method for determining sample estimates and their confidence limits of the median-time-to-failure, sigma, and early percentile of a log-Normal distribution, which are used to characterize the electromigration failure-time distribution of equivalent metal lines subjected to a constant current-density and temperature stress. Failure is defined as some pre-selected fractional increase in the resistance of the line under test. Analysis procedures are provided to analyze complete and singly, right-censored failure-time data. Sample calculations for complete and right-censored data are provided in Annex A. The analyses are not intended for the case when the failure distribution cannot be characterized by a single log-Normal distribution.

Committee(s): JC-14, JC-14.2

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