Vibration Induced Fatigue Life Estimation of Corner Leads of Peripheral Leaded Components
Vibration Induced Fatigue Life Estimation of Corner Leads of Peripheral Leaded Components
复制标题
外围引线元件角引线的振动疲劳寿命估算
DOI：
10.1115/1.2792159
复制
发表时间：
1996
影响因子：
1.6
通讯作者：
D. Barker
中科院分区：
文献类型：
--
作者：
Sidharth;D. Barker
集成电路和相关电子技术的快速发展，对电子封装及其材料结构的可靠性提出了越来越高的要求。除了热致应力外，电子封装在运输、处理和/或操作过程中经常经历动态外部负载。这对于汽车、军事和商业航空电子操作环境尤其重要。这些动载荷在引线中产生较大的动应力，导致疲劳失效。对于外围引线封装，角引线是压力最大的引线。本文研究了当局部外围引线组件/板组件在两个方向上受弯矩作用时，外围引线组件角部引线的面外位移的确定。该解决方案是通过结合有限元分析（FEA）、实验设计（DOE）和分析技术来实现的。面外位移可以作为局部导联模型的边界条件来确定应力，从而可以用来估计疲劳寿命。
The rapid advancement of integrated circuits and associated electronic technologies have placed increasing demands on electronic packaging and its material structures in terms of the reliability requirements. In addition to the thermally induced stresses, electronic packages often experience dynamic external loads during shipping, handling, and/or operation. This is especially important for automotive, military, and commercial avionics operating environments. These dynamic loads give rise to large dynamic stresses in the leads causing fatigue failures. For peripheral leaded packages the corner leads are the most highly stressed leads. This paper addresses the determination of the out-of-plane displacement of the corner leads of peripheral leaded components when the local peripheral leaded component/board assembly is subjected to bending moments in two directions. The solution is achieved by using a combination of Finite Element Analysis (FEA), Design of Experiments (DOE), and analytical techniques. The out-of-plane displacement can then be applied as a boundary condition on a local lead model to determine the stresses which in turn can be used to estimate the fatigue life.