SRC Forum - Message Replies

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

Original Message:

Posted by: Rushabh
Date posted: Mon Mar 5 15:13:43 US/Eastern 2007
Subject: Why failure rate of a capacitor is higher for non-operating vs operating condition
Message:
Can you please try to find the failure rate with 10% duty cycle ? I might be that for 0% duty cycle calculation there is some bug in software. Ideally what you pointed out is correct. Operating mode failure rate should be higher than Non Operating.

Reply:

Subject: Failure rate of a capacitor is higher for non-operating vs operating condition
Reply Posted by: David Dylis (ddylis@alionscience.com )
Organization: Alion Science and Technology
Date Posted: Mon Mar 5 16:33:38 US/Eastern 2007
Message:
Please provide the type of capacitor that this issue relates to (e.g., ceramic, electrolytic (tantalum or aluminum), etc.). When I calculate the failure rate of a capacitor in PRISM based on your criteria, the failure rate of the capacitor in the dormant/non-operating mode is less than the operating coniditon.

Next reply