Sn1 Au5

Sn₁Au₅ is an intermetallic compound combining tin and gold in a 1:5 atomic ratio, belonging to the class of precious-metal intermetallics used primarily in microelectronics and optoelectronics. This material is employed in bonding, contact, and barrier applications where its combination of gold's corrosion resistance and tin's lower cost provides cost-effective performance in demanding thermal and electrical environments. It is particularly relevant for flip-chip assembly, wire bonding, and high-reliability interconnects where thermal cycling and oxidation resistance are critical.