The present invention was based on the object of providing a ribbon wire with which it is possible to effectively prevent damage to the bonding surfaces during the bonding process and short circuits when the corresponding assemblies are used. According to the invention, this object is achieved by a bonding wire having a wire core made of a first material and a wire sheath which envelops the wire core and is made of a second material, wherein the first material has a first metal and the second material has a second metal and the first metal and the second metal are different, and wherein the bonding wire has a cross-sectional ratio of not more than 0.8.
