Sn PLATING FLAT CONDUCTOR AND FLAT CABLE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide Sn plating flat conductor and flat cable using the same superior in properties of bending resistance, connector connection, wear resistance and soldering. SOLUTION: Sn plating layer 2 of thickness 0.05μm or more is provided on whole surface of conductor 1 having U-shaped section of thickness 0.1 mm or less and width 1.5 mm or less. The Sn plating layer 2 is composed of pure Sn plating layer 2 and metal compound layer 4 formed between the pure Sn plating layer 3 and the conductor 1. Ratio of thickness V1 of the pure Sn plating layer 3 to thickness V2 of the metal compound layer 4 preferably satisfies an expression 1. 2