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Effect of electromigration of Sn-xAg-Cu solder joints on its microstructure and mechanical properties

  • Shuang Tian
  • , Fengjiang Wang*
  • , Dongyang Li
  • , Peng He
  • *Corresponding author for this work
  • Jiangsu University of Science and Technology
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, effect of electromigration of Sn-0.7Cu, Sn-0.3Ag-0.7Cu and Sn-3.0Ag-0.5Cu solder joints on the microstructure and mechanical properties were investigated. Within a certain range, addition of Ag enhanced the electromigration stressing resistance and the joint strength. Electromigration changed the distribution and morphology of the IMC. In cathode side, the Cu6Sn5 layer reduces with the increasing time, while in anode side, the Cu6Sn5 layer would increased with the increasing time. Electromigration reduced the mechanical properties of linear joints. The drop rate of ultimate tensile strength has a linear relationship with the stressing time. According to the fracture morphology, the fracture mechanism changed from ductile to cleavage fracture.

Original languageEnglish
Title of host publication16th International Conference on Electronic Packaging Technology, ICEPT 2015
EditorsHu He, Keyun Bi, Wenhui Zhu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages256-259
Number of pages4
ISBN (Electronic)9781467379991
DOIs
StatePublished - 1 Sep 2015
Event16th International Conference on Electronic Packaging Technology, ICEPT 2015 - Changsha, China
Duration: 11 Aug 201514 Aug 2015

Publication series

Name16th International Conference on Electronic Packaging Technology, ICEPT 2015

Conference

Conference16th International Conference on Electronic Packaging Technology, ICEPT 2015
Country/TerritoryChina
CityChangsha
Period11/08/1514/08/15

Keywords

  • Ag content
  • electromigration
  • joint strength
  • microstructure

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