ESS Tutorial

Environmental Stress Screening Tutorial Bruce Peterson Accolade Engineering Solutions 15520 Rockfield Blvd., Suite H Irvine, CA 92618 949-597-8378 www.accoladeeng.com 1.0 Introduction The purpose of this paper is to provide an overview of the technology of environmental stress screening. In the sections that follow, several areas of environmental stress screening technology will be discussed. These areas will include: 1. Description of why environmental stress screening is performed 2. Show the results from surveys which rank the most effective screening stimuli 3. Describe dominant product failure modes and the best stimuli for precipitating them 4. Describe the most common mathematical models for quantifying stress screening programs (also called the empirical stress screen equations) 5. Show the results of these mathematical models for the competing stress screening profiles 6. Describe the benefits of screens with high stress levels 7. Provide and overview of thermal chamber technology 8. Describe the developmental aspects of an effective environmental stress screening process 9. Present some conclusions This document is not intended to provide a thorough treatment of product profiling as part of stress screen development. Every product should be considered a unique specimen with its own requirements for an effective screen. The specific steps toward ...