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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: Johnson Wood (wuxiangping@huawei.com )
Date posted: Wed Dec 12 1:50:25 US/Eastern 2001
Subject: Reliability Prediction for New Components
Message:
A certain type of optical module is used in our circuit board. Its failure rate data is derived from either Bellcore or field statistic. For some reasons, we use a new type of optical module in the new product. The new component is made by a different new technical, or a different manufacturing process, or even only manufactured by a different product line. Can the failure rate of the old component be used in the new component? Or how to get the new component's failrue rate?


Reply:

Subject: Nwe Optical Component
Reply Posted by: B.W.Dudley (bdudley@alionscience.com )
Organization: Reliability Analysis Center
Date Posted: Thu Dec 20 15:10:28 US/Eastern 2001
Message:
As a first start in any analysis process, you can assume the past component reliability as the baseline. One would expect that the new technology part would be at least as reliable or more. To analyze the new technology component, you will need test data from either the manufacturer or someone who has operated the part in another unit. Most part manufacturer's perform accelerated testing at high stress levels to determine the expected reliability in a short period of time. This data is a good estimator for the part replability when you do not have actual experience data. If none of these source are productive, then you will require a test program to verify the reliability.


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