Tin/Bismuth Alloy Foil (Sn97/Bi3)

Tin/Bismuth Alloy Foil (Sn97/Bi3) combines the corrosion resistance and solderability of tin with the low melting point and embrittlement control offered by bismuth. This alloy exhibits reduced thermal expansion and excellent wettability, making it ideal for precision soldering in temperature-sensitive electronics. Industries such as microelectronics, optics, and specialty manufacturing use this foil for creating lead-free solders, producing thermally stable coatings, and fabricating precision components. Specific applications include joining delicate optical assemblies, coating connectors to prevent tin whisker formation, and forming lead-free bonding layers in electronics. The foil geometry enables uniform coverage, easy cutting to shape, and consistent material performance in both prototyping and high-volume manufacturing.