Reliability prediction for electronic components: Difference between revisions

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A [[prediction]] of reliability is an important element in the process of selecting equipment for use by [[telecommunications]] [[service providers]] and other buyers of [[electronic equipmentequip me not]], and it is essential during the design stage of engineering systems life cycle <ref>EPSMA, “Guidelines to Understanding Reliability Predictions”, EPSMA, 2005<ref>. Reliability is a measure of the [[frequency]] of equipment failures as a function of time. [[wikt:reliability|Reliability]] has a major impact on maintenance and repair costs and on the continuity of service.<ref>Terry Donovan, Senior Systems Engineer Telcordia Technologies. Member of Optical Society of America, IEEE, "Automated Reliability Prediction, SR-332, Issue 3", January 2011; "Automated Reliability Prediction (ARPP), FD-ARPP-01, Issue 11", January 2011</ref>

Every product has a [[failure rate]], λ which is the number of units failing per unit time. This failure rate changes throughout the life of the product. It is the [[manufacturer]]’s aim to ensure that product in the “infant mortality period” does not get to the [[customer]]. This leaves a product with a useful life period during which failures occur randomly i.e., λ is constant, and finally a wear-out period, usually beyond the products useful life, where λ is increasing.