淡江大學機構典藏:Item 987654321/121472
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    题名: Effects of Surface Diffusion and Solder Volume on Porous-Type Cu3Sn in Cu/Sn/Cu Microjoints
    作者: Wang, Y.W.
    关键词: Semiconductor package;Microjoint;Porous-type Cu3Sn
    日期: 2022-01
    上传时间: 2021-10-14 12:11:29 (UTC+8)
    出版者: Elsevier (Taiwan)
    摘要: High-density interconnection technology is critical for semiconductor packages, which require high speed and multifunctional demands. The shrinkage of solder volume is needed for the miniaturization of devices. Fewer studies investigate using Cu3Sn than Cu6Sn5 in large solder joints. However, Cu3Sn has a significant and critical effect on microjoints. Cu6Sn5 can transform completely to Cu3Sn, which may cause unexpected problems in microjoints. The interfacial reactions in large and small solder joints are different. Porous-type Cu3Sn is an unusual structure at the interface. In this study, we utilize the transient liquid-phase bonding (TLP) process on microbumps to drive the transformation of Cu6Sn5 to Cu3Sn. Porous-type Cu3Sn is loose and unfavorable for joint strength. High-temperature bonding, microbumps and flux residues induce porous structure formation.
    關聯: Materials Chemistry and Physics 275, 125307(4 pages)
    DOI: 10.1016/j.matchemphys.2021.125307
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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