Patent ID: 7482540

Claim:
A flat cable comprising: (1) a plurality of flat conductors each including a copper substrate, the flat conductors being aligned in a plane; and (2) an insulating resin that covers the flat conductors, at least a terminal part of each of the flat conductors having a tin-copper alloy layer formed on the copper substrate and a zinc-containing tin plating layer formed on the tin-copper alloy layer, with a thickness of the tin-copper alloy layer being at least 0.2 μm and not greater than 1.0 μm, a thickness of the zinc-containing tin plating layer being at least 0.2 μm and not greater than 1.5 μm, a total thickness of the tin-copper alloy layer and the zinc-containing tin plating layer being at least 0.4 μm and not greater than 1.7 μm, the zinc content in the zinc-containing tin plating layer is at least 0.2% and not greater than 20%, and the zinc-containing tin plating layer contains an amount of at least 2% and not greater than 4% of bismuth.