Alloying influences on low melt temperature SnZn and SnBi solder alloys for electronic interconnections

Guang Ren, Ian J. Wilding, Maurice N. Collins

Research output: Contribution to journalReview articlepeer-review

Abstract

Due to its commercial potential and the technological challenges associated with processing, low temperature soldering is a topic gaining widespread interest in both industry and academia in the application space of consumer and "throw away" electronics. This review focuses on the latest metallurgical alloys, tin zinc (Sn-Zn) and tin bismuth (Sn-Bi), for lower temperature processed electronic interconnections. The fundamentals of solder paste production and flux development for these highly surface active metallic powders are introduced. Intermetallic compounds that underpin low temperature solder joint production and reliability are discussed. The influence of alloying on these alloys is described in terms of critical microstructural changes, mechanical properties and reliability. The review concludes with an outlook for next generation electronic interconnect materials.

Original languageEnglish
Pages (from-to)251-260
Number of pages10
JournalJournal of Alloys and Compounds
Volume665
DOIs
Publication statusPublished - 25 Apr 2016

Keywords

  • Alloying
  • Microstructure
  • Reliability
  • Solder

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