Kirk and Fred tackle how traditional reliability methods fall short in today's complex electronics landscape. They critique outdated approaches, like the Military Handbook 217, which hasn't been revised in decades. The hosts delve into the challenges posed by smaller components and higher clock speeds that change failure dynamics. Plus, they highlight the importance of adapting reliability testing to match modern manufacturing variabilities. Expect insights on the evolution of technology and personal anecdotes that shape our future innovation expectations.
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insights INSIGHT
Modern Electronics Challenge Traditional Methods
Traditional reliability methods don't fully address new failure modes in modern electronics like 20+ layer PCBs and embedded components.
Increasing electronic speeds transform 3rd order effects into critical first order issues needing new approaches.
insights INSIGHT
Limitations of Military Handbook 217
Military Handbook 217 and similar models rely on oversimplified fit rates and assume constant failure rates which are inaccurate for today's electronics.
These models ignored wear-out mechanisms, resulting in poor field reliability correlations.
volunteer_activism ADVICE
Design for Robustness Early
Build the most robust design early to tolerate manufacturing and environmental variations.
Monitor manufacturing excursions closely as even good designs can fail with inconsistent production.
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Kirk and Fred discuss a question from a listener about why traditional reliability methods don't work for modern electronics.
Key Points
Join Kirk and Fred as they discuss why traditional methods, such as those based on prediction using classical references like Military Handbook 217F don't work with today's electronics..
Topics include:
IThe decreasing dimensions of electronic components and circuit boards, along with significantly higher clock speeds in digital electronics, have made some third-order effects become first-order effects that were previously not considered
Any product with a robust design can, at any time during the manufacturing period, become unreliable if a manufacturing excursion occurs, and there isn’t a crystal ball that can predict it.
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.
Please click on this link to access a relatively new analysis of traditional reliability prediction methods article from the US ARMY and CALCE titled “Reliability Prediction – Continued Reliance on a Misleading Approach”. It is in the public domain, so please distribute freely. Attempting to predict reliability is a misleading and costly approach to use for developing a reliable system.
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