Do it Right the First Time

Abstract

Kirk and Fred discuss the risks to reliability of having to rework or human handling of circuit boards and rework in general.

Key Points

Join Kirk and Fred as they discuss process control and hand soldering and how it increases the reliability risk compared to the original production line produced circuit boards

Topics include:

• Reworked solder joints are inconsistent and human “touch-up” carries a greater risk of failure than the original re-flow oven soldering.
• Rework and repair are often referred to as the “hidden factory” as the costs of touch-ups and failures of the rework are not always financially accounted for.
• A fundamental tenet of reliability engineering is that if you do not know the physics of why a system fails and why it’s unreliable, you will not know how to make it reliable
• Customers, in general, expect more reliable products, and the smartphone industry has made them more shock-resistant and water-resistant in each new iteration of the design.

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 1016 Do it Right the First TimeKirk Gray

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Show Notes

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. Trying to predict reliability for development is a misleading a costly approach.

You can now purchase the most recent recording of Kirk Gray’s Hobbs Engineering 8 (two 4 hour sessions) hour Webinar “Rapid and Robust Reliability Development – 2022 HALT & HASS Methodologies Online Seminar” from this link.

For more information on the newest discovery testing methodology here is a link to the book “Next Generation HALT and HASS: Robust design of Electronics and Systems” written by Kirk Gray and John Paschkewitz.