Cu-SnAg Interconnects Evaluation for the Assembly at 10µm and 5µm Pitch

Several types of interconnects for the finer pitch assembly are currently being investigated across the globe. Here in this paper, a new type of interconnect Ni3Sn4 Interconnect is proposed and evaluated for assembly at 10 pitch and below. The proposed interconnect is compared to traditional solder interconnect. The comparison is done on the basis of shape of the joints in interconnects, the electric yield and mechanical properties. Later, Ni3Sn4 IMC interconnect is also compared to known Cu3Sn IMC Interconnect.