FLAT CABLE, FLAT CABLE PRODUCTION METHOD, AND ROTATING CONNECTOR DEVICE EQUIPPED WITH FLAT CABLE

There is provided a flat cable having a good folding property and inhibiting occurrence of buckling while maintaining an electrical conductivity equivalent to an electrical conductivity of a conventional flat cable, so as to achieve further improvement in a bending property.A flat cable is a flat cable including a predetermined number of conductors, a pair of insulating films disposed in such a manner as to sandwich the predetermined number of conductors, and an adhesive layer provided between the pair of insulating films, wherein the conductors each satisfy Y ≥ 1.2 × t × E / (2X - t) within a range of bending radius of 4 mm to 8 mm, where X (mm) denotes bending radius, Y (MPa) denotes 0.2% yield stress, t (mm) denotes thickness, and E (MPa) denotes Young's modulus, and the conductors each have an electrical conductivity of greater than or equal to 50% IACS.