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: Ed Takacs (etakacs@aethercomm.com )
Organization:Aethercomm, Inc.
Date posted: Mon Nov 19 18:45:49 US/Eastern 2001
Subject: Power GaAs FET and LDMOS FET failure rate prediction
Message:
I am trying to determine the part reliability rate for LDMOS FETs-operating at L band and 60 Watts per FET (Tchannel<125C)and Power GaAs FETs (operating about 4 Watts) with Tchannel also < 125 C. MIL 217F calculates failure rates much higher than expected-(ie way out, unrealistic) I am looking for guidance-either a study, or manufacturers ap note or anything else- to determine a realistic part failure rate for the LDMOS and Power GaAs FET's. Thanks in advance for your help.

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