Common mode choke (1, 30, 45) having an in particular magnetically permeable annular core and at least one coil (2, 3, 8, 9, 18, 34, 35) and a further coil (14, 15, 35, 36), wherein the coil (2, 3, 8, 9, 18, 35, 35) and the further coil (14, 15, 35, 36) are each arranged in the region of the annular core such that a magnetic flux passing through the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) encompasses the annular core, the annular core encloses an in particular cylindrical or polygonal aperture and the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) comprise, for each coil winding, at least one respective electrical inner conductor (2, 3, 8, 9, 18, 14, 15, 35, 36), in particular a busbar, which is arranged in the aperture, wherein the inner conductors arranged in the aperture in particular in cross section conjointly form a shape corresponding to the aperture and thus conjointly fill the aperture, wherein the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) each have at least two or only two coil windings, wherein an electrical connection (18, 25) between the inner conductor (2, 3, 33, 34, 35, 36) of one coil winding and an outer conductor (8, 9) of the further coil winding is formed by an electrical connection element (18, 25) with a flat extent, characterized in that electrical terminals of the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) are connected to a circuit carrier (39, 44), wherein the connection element (18, 25) is at a spacing from the circuit carrier (39, 44), wherein the circuit carrier (39, 44) has an electrically insulating layer and at least one electrically conductive layer (20, 24, 26, 27, 28), wherein, in the region of an end face (41, 42) of the inner conductor (2, 3, 14, 15, 34, 35, 36), the inner conductor (2, 3, 14, 15, 34, 35, 36) is connected to an electrically conductive layer (26, 28) of the circuit carrier and, in the region of a solder foot (12, 13) of the outer conductor (8, 9), the outer conductor (8, 9) is connected to an electrically conductive layer of the circuit carrier, and the inner conductor (2, 3, 14, 15, 34, 35, 36) and the outer conductor (8, 9) are connected by means of the connection element which is at a spacing from the circuit carrier and is integrally bonded to the electrically conductive layers (24, 26). the annular core encloses an in particular cylindrical or polygonal aperture and the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) comprise, for each coil winding, at least one respective electrical inner conductor (2, 3, 8, 9, 18, 14, 15, 35, 36), in particular a busbar, which is arranged in the aperture, wherein the inner conductors arranged in the aperture in particular in cross section conjointly form a shape corresponding to the aperture and thus conjointly fill the aperture, wherein the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) each have at least two or only two coil windings, wherein an electrical connection (18, 25) between the inner conductor (2, 3, 33, 34, 35, 36) of one coil winding and an outer conductor (8, 9) of the further coil winding is formed by an electrical connection element (18, 25) with a flat extent, characterized in that electrical terminals of the coils (2, 3, 8, 9, 18, 14, 15, 35, 36) are connected to a circuit carrier (39, 44), wherein the connection element (18, 25) is at a spacing from the circuit carrier (39, 44), wherein the circuit carrier (39, 44) has an electrically insulating layer and at least one electrically conductive layer (20, 24, 26, 27, 28), wherein, in the region of an end face (41, 42) of the inner conductor (2, 3, 14, 15, 34, 35, 36), the inner conductor (2, 3, 14, 15, 34, 35, 36) is connected to an electrically conductive layer (26, 28) of the circuit carrier and, in the region of a solder foot (12, 13) of the outer conductor (8, 9), the outer conductor (8, 9) is connected to an electrically conductive layer of the circuit carrier, and the inner conductor (2, 3, 14, 15, 34, 35, 36) and the outer conductor (8, 9) are connected by means of the connection element which is at a spacing from the circuit carrier and is integrally bonded to the electrically conductive layers (24, 26).