Copper bus bars are used to distribute high amounts of current and used for mounting components and dissipating heat in various electrical and electronic applications. The main purpose of a busbar is to carry electricity and distribute it. Typically, C110 copper – a general purpose copper per ASTM B152–. Copper Busbars are plated with bright or matte tin to further enhance the corrosion protection, electrical conductivity and solderability of the copper bus bar. Tin has many favorable properties. Tin-plated copper busbars are used in a variety of industries and applications, including: Electrical power transmission and distribution:Tin-plated. Tin plating is a versatile and functional plating for copper busbars and electronic applications due to its low cost, corrosion protection, conductivity, solderability, heat-transfer and anti-galling. Busbars can be used in a wide variety of applications. When specifying a tin coating for a busbar application, there are a few key characteristics to consider. There are several types of tin that can be used to plate copper busbars, including: Electrolytic Bright.