Forum: Reliability & Maintainability Questions and Answers
Topic: Reliability & Maintainability Questions and AnswersTopic Posted by: Reliability & Maintainability Forum (email@example.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
Original Message:Posted by: Tom Clark (firstname.lastname@example.org )
Date posted: Thu Jul 11 14:46:20 US/Eastern 2002
Subject: RAC FIT Rates
We have received some test reports from a DC-DC converter vendor. They show an MTBF of 3547773 hours with a total failure rate for the assembly of .281867 The reports are labeled with PRISM v1.3 and RAC. The standard for FIT rate is failures in 10^9 hours, however the failure rate here only makes sense if it is out of 10^6 hours. Does RAC do things differently, or is there some other explanation for this dioscrepancy? Thanks!