On-state reliability of amorphous silicon antifuses

Abstract

A unified model of the on-state reliability of a-Si antifuses is presented. This physical model accounts for both thermal activation and electromigration. Temperature at the conductive link is the temperature at which the antifuse is stressed and is controlled by the stress current, not the ambient. To ensure a 10 year lifetime, a-Si antifuses should be operated at a current value less than 60% of its programming current value.