The impact of electrical current, mechanical bending, and thermal annealing on tin whisker growth

被引：47
作者：
Fukuda, Yuki [1 ]
Osterman, Michael [1 ]
Pecht, Michael [1 ]
机构：
[1] Univ Maryland, CALCE, College Pk, MD 20742 USA
来源：
MICROELECTRONICS RELIABILITY | 2007年 / 47卷 / 01期
关键词：
D O I：
10.1016/j.microrel.2006.04.011
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents the results of an eight-month design-of-experiment assessment of whisker growth on bright and matte tin-plated copper, mechanically deformed and unformed coupons, subject to a continuous 50 degrees C/50%RH environment, with and without the presence of a constant electrical current density magnitude of 0.48 x 10(2) A/cm(2). Whiskers were observed to grow both at the anode and cathode end. The distribution-based data showed a reduction in whisker density due to annealing and/or the application of electrical current for both bright and matte tin. However, the application of electrical current was observed to increase the standard deviation of the length distribution, and to generate longer whiskers. (c) 2006 Elsevier Ltd. All rights reserved.
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页码：88 / 92
页数：5
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