Patent ID: 7692527

Claim:
A common mode choke coil comprising: first and second coil conductors that are magnetically coupled to each other; a third coil conductor that is electrically connected in series to the first coil conductor and substantially not magnetically coupled to the first coil conductor; a fourth coil conductor that is electrically connected in series to the second coil conductor and substantially not magnetically coupled to the second coil conductor; a first contact conductor of which one end is connected to an inner end of the first coil conductor and the other end is connected to an inner end of the third coil conductor; and a second contact conductor of which one end is connected to an inner end of the second coil conductor and the other end is connected to an inner end of the fourth coil conductor, wherein the inner end of the first coil conductor and the inner end of the second coil conductor are formed so as not to overlap each other in view of an accumulating direction of the first and second coil conductors, the first contact conductor and the second contact conductor are formed so as not to overlap each other in view of the accumulation direction, and the third coil conductor and the fourth coil conductor are substantially not magnetically coupled.