Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
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Original Message:

Posted by: Rushabh J (rushabh.jariwala@gmail.com )
Date posted: Wed Mar 30 8:26:11 US/Eastern 2005
Subject: How to estimate IC Failure Rate in IDLE Mode
Message:
I am trying to predict the reliability of electronics control. The control is programmed such a way that 5 ICs would be active every 0.5 Sec. for 0.0012 Sec. and then it would go to it's sleep mode or idle mode. Main point is we are not switching it off but just keeping it in IDLE / SLEEP mode. For all this ICs I got the failure rate data in the working condition of IC. We got the Reliability Test Report conducted for 1000 Hrs. I tried in RELEX as well as PRISM to find any option which takes care of standby/IDLE/Sleep mode failure rates, but it gives option to enter the mission profile time against different temperature. But I believe entering different temperature is not the solution . Because Ideally in stand by more failrue rate would change. My question is how to calculate the total Reliability. In the IDLE/Sleep mode time what should we consider the failure rate. Thanking in Anticipation.

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