Abstract

Kirk and Fred discussing the issue of derating components to increase the reliability of the larger system. Although Fred and Kirk agree on most reliability topics, derating by the traditional reliability guidebooks is not one of them.

Key Points

Join Kirk and Fred as they discuss Fred’s recent article on the latest revision of the Certified Reliability Engineering (CRE) body of knowledge and in particular the issue of derating compenents.

Topics include:

• The rapid technological obsolescence of most electronics makes the life entitlement of components less critical as they have more life than needed for most applications
• Component manufacturers do not publish thermal operation margin between operation and what they are capable of, especially for semiconductors.
• The use of HALT to do empirical derating based on finding the weakest component and increasing that components capability, instead of shotgun derating based on traditional tables.

Enjoy an episode of Speaking of Reliability. Where you can join friends as they discuss reliability topics. Join us as we discuss topics ranging from design for reliability techniques, to field data analysis approaches.

SOR 240 Should Reliability Engineers Encourage Component Derating?Kirk Gray

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Show Notes

Check here to read Fred’s review of the 2018 ASQ CRE body of Knowledge

Click here to read Kirk’s article “Why the Drain in the Bathtub Curve Matters”.

Click here to read the article, “Long Term Thermal Overstressing of Computers”  co-authored  by Kirk Gray and Michael Pecht,

For more information about Kirk's Consulting services, please see his Accelerated Reliability Solutions website please click here

To see or purchase Kirk's new book co-authored with John Paschkewitz, Next Generation HALT and HASS: Robust Design of Electronics and Systems please click on this link.

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