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:C.P. Chuah (c.p.chuah@sheffield.ac.uk )
Organization:University of Sheffield
Date posted: Wed Nov 6 8:24:27 US/Eastern 2002
Subject: PRISM demo
Message:
I have another question regarding the PRISM software. Can someone tell me what is dormant temperature? Why is the overstress message only comes up when the temperature is over 200 degrees when the junction temperature should not exceed 150 degrees. Is this a fair comparison ? Why is also the thera-JA must be in the range of 1-500 whereas the data available from most manufacturers states a theta-JA of less than 1.

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