Estimating The Vibration Fatigue Life Of Quad Leaded Surface Mount Components
D. Barker, Y. Chen, and A. Dasgupta
This paper discusses the assumptions and details of the fatigue life
calculations required to predict the fatigue of quad leaded surface mount
components operating in a vibration environment. A simple approximate
stress analysis is presented that does not require complex finite element
modeling, nor does it reduce the problem to a simple empirical equation
or rule of thumb. The goal of the new method is to make PWB vibration
solder joint reliability information available to the designer as early
as possible and in an easily understood and implemented manner.
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