Track 1 Session 11

10:30 to 11:30 a.m. Thursday, June 17, 2010

From HALT Results To An Accurate Field MTBF Estimate

How many of us have wanted to use HALT data to estimate the annualized failure rate (AFR)? The common response is that "it cannot be done." In fact, it is possible, but what is needed is a good model and good data to back the model. Now there is a model that exists that combines HALT experience with field data. Previous attempts by individuals to derive a model were unsuccessful because the approach was to determine an acceleration factor for HALT using a physics-of-failure approach, and that is impossible to do accurately because the time at each stress is too short and it is difficult to account for all of the interactions. The new model is based on experiential data rather than physics-of-failure.

Key Words: HALT, AFR, RDT

Mike Silverman

Ops A La Carte LLC

Santa Clara, California

Harry McLean

Advanced Energy Industries, Inc.

Santa Clara, California