SRC Forum - Message Replies


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

Back to message list Topics List About this forum
Original Message:

Posted by: Sadat
Date posted: Thu Aug 11 14:56:12 US/Eastern 2005
Subject: Running Hotter
Message:
what is the effect of operating a product like a switch in Central Office for a max. of 3 hrs per day (in non air conditioned location) at 45C? How that will affect MTBF for the product? Telcordia predictions are for 40C Ambient ??


Reply:

Subject: Telcordia
Reply Posted by: Joe Dzekevich
Date Posted: Fri Aug 12 15:58:42 US/Eastern 2005
Message:
Telcordia Method 1, Cases 1 and 2 default to 40C, however, Case 3 in the standard is a stress prediction, similar to 217, where you can use any ambient temperature. The difference between 40C and 45C will be very small. Joe


Back to message list Topics List About this forum
Reply to this message