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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum ( )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Al Johnson ( )
Organization:Analogic Corporation
Date posted: Tue Nov 17 17:17:25 US/Eastern 1998
Subject: Theta (jc) by Package Type
I am a Reliability Engineer performing stress analyses on medical and computer equipment. Stress analysis requires Theta (jc) as a data entry field. Many specification sheets do not have Theta (jc), C/W. Also, 217F Theta (jc) by package type is very inadequate. Is there a current Theta (jc) by package type available?

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Subject: Theta (jc)
Reply Posted by: Brian Alphonso ( )Wabco
Date Posted: Tue Mar 2 15:38:43 US/Eastern 1999
Just to note that the Theta jc values can often be found on the manufacturer's website, on either the parts spec sheet or sometimes as part of a general application note on thermal analysis or packaging reports.

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