Competitive growth of Cu3Sn and Cu6Sn5 at Sn/Cu interface during various multi-reflow processes

被引:9
作者
Shang, Min [2 ]
Dong, Chong [2 ]
Yao, Jinye [2 ]
Wang, Chen [2 ]
Ma, Haoran [1 ]
Ma, Haitao [2 ]
Wang, Yunpeng [2 ]
机构
[1] Dalian Univ Technol, Sch Microelect, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
基金
中国国家自然科学基金;
关键词
SOLDER; ENERGY; ALLOY; TIME;
D O I
10.1007/s10854-021-06711-x
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
The competitive growth of Cu3Sn and Cu6Sn5 in the multi-reflow processes induced by temperature, time, and cooling rate was systematically studied in this work. Results indicated that the thickness proportion of Cu3Sn in the IMC layer was highly promoted in the temperature-increased multi-reflow process and slightly increased with a fluctuation in the isothermal multi-reflow process, while obviously decreased in the temperature-decreased multi-reflow process. The proportion of Cu3Sn grew following the increase of reflow temperature, time, and cooling rate and the thickness of Cu3Sn formed at the central of the Cu6Sn5 bottom was higher than that formed at the edge. The results have a significant meaning in understanding and controlling the competitive growth of Cu3Sn and Cu6Sn5 and improving the reliability of solder joints.
引用
收藏
页码:22771 / 22779
页数:9
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