Extruded flexible flat cable

An extruded flexible flat cable having

• a conductor covered with an insulation layer extrude-formed with an extrusion molding method,
• the insulation layer being formed from a fire-retardant resin composition containing a resin composition and a fire-retardant additive,
• the fire-retardant resin composition having a melting point of 170-215 degrees C. measured with a differential thermal analysis at a rate of temperature increase of 10 degrees C. per minute,
• wherein a resin component of the resin composition consists of a modified polybutylene terephthalate,
• wherein the fire-retardant additive consists of organic/inorganic acid,
• wherein the fire-retardant resin composition includes 1 to 9 parts by weight of 1,2-diethyl phosphinic acid aluminum salt and/or an oxo acid salt with respect to 100 parts by weight of the modified polybutylene terephthalate, as the fire-retardant additive and
• wherein the conductor has a thickness of at least 0.1 mm and the flat cable has a flexion cycle of at least 7*104 measured with a flexural fatigue tester at a flexion radius of R=10 and at a temperature of 25±3 degrees C.