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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: Gale Powers (g.powers@ericsson.com )
Date posted: Wed Jun 4 13:38:30 US/Eastern 2003
Subject: Vicor Power Module Reliability Data
Message:
Can anyone out there help me obtain demonstrated reliability data on Vicor 2nd generation Micro modules used in Military ground fixed applications?


Reply:

Subject: Vicor Reliability Assessment
Reply Posted by: BWD (bdudley@alionscience.com )
Organization: RAC
Date Posted: Thu Jun 19 15:18:42 US/Eastern 2003
Message:
From SPAWAR system data, we obtained information on the display systems used in Navy surface war ships. The display uses a Vicor power supply. The data are 2,000,000 million plus, operating hours and three power supply failures. Using a 60% confidence one sided interval, the mean time between failure [MTBF] is 510,000 hours. A prediction on the power supply for a ship board environment is 356,000 hours MTBF. A ground military environment prediction reveals a MTBF of 832,000 hours. Since the environment for ship board equipment is more severe then ground fixed, I would expect that a value greater than the 510,000 hours should be achievable for the ground.


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