Interfacial Reaction and Bump Shear Property of Electroplated Sn-37Pb Solder Bump with Ni Under Bump Metallization during Multiple Reflows

被引：1
|
作者：
Koo, Ja-Myeong [1 ]
Jung, Seung-Boo [1 ]
机构：
[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea
来源：
THERMEC 2006 SUPPLEMENT: 5TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS | 2007年 / 15-17卷
关键词：
Sn-Pb (tin-lead) solder; intermetallic compound (IMC); multiple reflows; ball shear test; flip chip; electroplating; Ni under bump metallization (Ni UBM);
D O I：
10.4028/www.scientific.net/AMR.15-17.181
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The interfacial reactions and bump shear properties of the electroplated Sn-37Pb (in wt.%) solder bumps with the Ni under bump metallization (UBM) were investigated as a function of the number of reflows. A continuous facetted Ni3Sn4 intermetallic compound (IMC) layer was formed at the interface between the solder bump and the Ni UBM during reflow. The thickness of the Ni3Sn4 IMC layer was 0.41 mu m after 1 reflow, and then the thickness of the IMC layer increased with increasing the number of reflows. The shear properties of the bumps indicated the maximum values after 1 reflow, and then decreased with increasing the number of reflows. The fracture surfaces of the bumps showed ductile failure characteristics after 1 reflow, and then the fraction of the brittle fracture, induced by the IMC formed at the interface, increased with increasing the number of reflows.
引用
收藏
页码：181 / 186
页数：6
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