Suppressing Growth of the Cu5Zn8 Intermetallic Layer in Sn-Zn-Ag-Al-Ga/Cu Solder Joints

Autor: R. S. Lai, Kwang-Lung Lin, B. Salam
Rok vydání: 2008
Předmět:
Zdroj: Journal of Electronic Materials. 38:88-92
ISSN: 1543-186X
0361-5235
Popis: Cu5Zn8 normally forms between Sn-Zn solder and Cu metallization. In this study, the growth of the intermetallic compound (IMC) layer is slowed by increasing the silver content in the Sn-8.5Zn-Ag-Al-Ga/Cu system. Experimental results showed that the total thickness of the IMC layers formed with 1.5 wt.% silver content was about half that without silver. The reduction might be due to the formation of the intermetallic compound (Ag,Cu)-Zn at the interface in addition to silver.
Databáze: OpenAIRE