Patent ID: 8653928
Filing Date: 2014-02-18
Classification: H01F

Abstract:
1. A common mode noise filter comprising: a first magnetic body and a second magnetic body; a non-magnetic body sandwiched between the first magnetic body and second magnetic body; a first coil conductor and a second coil conductor of planar shape which are embedded in the non-magnetic body and positioned on the first magnetic body side and second magnetic body side in the non-magnetic body in a manner facing each other in a non-contact state; a first external terminal connected to one end of the first coil conductor via a first lead conductor; a second external terminal connected to other end of the first coil conductor; a third external terminal connected to one end of the second coil conductor via a second lead conductor; and a fourth external terminal connected to other end of the second coil conductor; wherein the first lead conductor is embedded in the non-magnetic body except where connected to the first external terminal, and the second lead conductor is embedded in the non-magnetic body except where connected to the third external terminal, wherein with the first lead conductor embedded in the non-magnetic body, a part of the non-magnetic body covering the first lead conductor present at a position closer to the first magnetic body than the first coil conductor protrudes toward the first magnetic body and bites into the first magnetic body; and with the second lead conductor embedded in the non-magnetic body, a part of the non-magnetic body covering the second lead conductor present at a position closer to the second magnetic body than the second coil conductor protrudes toward the second magnetic body and bites into the second magnetic body.