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

Topics List About this forum

Original Message:

Posted by: Shanta
Date posted: Thu Jun 5 16:12:04 US/Eastern 2003
Subject: Default temperature rise for diodes in PRISM model
Message:
In the PRISM model, the default temperature rise for diodes is 60C. If the system is operating at 40C (average room temperature), the diodes in the system operate at 100C (40+60). Why is the default temperature rise so high? Seems hard to believe that standard, off the shelf diodes, can operate/withstand 100C temperatures. Since the overall system temperature is 40C, won't the diodes operate at a temperature slightly higher than that? Is the temperature rise only due to internal heating (thermal resistance*power)?

Reply:

Required Information:

Your Name:

Your Email Address:

Subject:


Optional Information:

Organization:

Your Organization's Web Site:

Your Web home page:


Message:


Formatting options for message:

HTML
Preformatted Text
Translated Text