A connector wherein the connector has: a cover portion into which one end of a cable is configured to be inserted, and which is made of an insulating synthetic resin; a plug portion which is supported in a state where the plug portion is projected from a tip end of the cover portion, which is to be inserted into a mating connector, and which includes: an insulator; a plurality of contact terminals that are supported by the insulator; and a metal shell which covers an outer circumference side of the insulator; and a printed circuit board which is placed in the cover portion, and on which a thermal protection circuit is mounted, the thermal protection circuit includes: an FET which is inserted in a power supply line of the printed circuit board; and a temperature switch IC which detects a temperature, and which, when the detected temperature exceeds a predetermined temperature, outputs an abnormal heating signal for causing the FET to cut off the power supply line, and the connector further includes a metal bonding member which thermally couples the metal shell to the temperature switch IC, characterised in that the metal bonding member is configured by a metal plate member which is formed separately from the metal shell, which is integrated with the metal shell, and which extends from the metal shell to the temperature switch IC, and wherein the metal bonding member, otherthan a front end portion is covered by a bag shaped insulator with high thermal conductivity, secured by single-sided adhesive tape. a cover portion into which one end of a cable is configured to be inserted, and which is made of an insulating synthetic resin; a plug portion which is supported in a state where the plug portion is projected from a tip end of the cover portion, which is to be inserted into a mating connector, and which includes: an insulator; a plurality of contact terminals that are supported by the insulator; and a metal shell which covers an outer circumference side of the insulator; and a printed circuit board which is placed in the cover portion, and on which a thermal protection circuit is mounted, the thermal protection circuit includes: an FET which is inserted in a power supply line of the printed circuit board; and a temperature switch IC which detects a temperature, and which, when the detected temperature exceeds a predetermined temperature, outputs an abnormal heating signal for causing the FET to cut off the power supply line, and the connector further includes a metal bonding member which thermally couples the metal shell to the temperature switch IC, characterised in that the metal bonding member is configured by a metal plate member which is formed separately from the metal shell, which is integrated with the metal shell, and which extends from the metal shell to the temperature switch IC, and wherein the metal bonding member, otherthan a front end portion is covered by a bag shaped insulator with high thermal conductivity, secured by single-sided adhesive tape. an FET which is inserted in a power supply line of the printed circuit board; and a temperature switch IC which detects a temperature, and which, when the detected temperature exceeds a predetermined temperature, outputs an abnormal heating signal for causing the FET to cut off the power supply line, and the connector further includes a metal bonding member which thermally couples the metal shell to the temperature switch IC, characterised in that the metal bonding member is configured by a metal plate member which is formed separately from the metal shell, which is integrated with the metal shell, and which extends from the metal shell to the temperature switch IC, and wherein the metal bonding member, otherthan a front end portion is covered by a bag shaped insulator with high thermal conductivity, secured by single-sided adhesive tape.