Patent ID: 6938327

Claim:
A method of manufacturing a common mode choke coil comprising the steps of: a) kneading powder of a magnetic material and a binder together; b) burying coated conducting wires into a semimanufactured product obtained in step a), said coated conducting wires each having a length equivalent to at least several common mode choke coils and being integrally coated with a non-magnetic and electrically insulating material in a state in which a plurality of metallic conducting wires are spaced apart with a predetermined distance therebetween; wherein step b) further comprises the steps of: b1) forming a core of the semimanufactured product obtained in step a) b2) winding said coated conducting wires around said core; and thereafter, b3) coating the semimanufactured product obtained in step b2) with the semimanufactured product obtained in step a); c) dividing the semimanufactured product obtained in step b) into pieces, each piece having a length equivalent to one common mode choke coil; d) exposing both end portions of each of said metallic conducting wires which constitute said coated conducting wires; e) sintering the semimanufactured product obtained in step d); and thereafter, f) connecting an electrode to each of said end portions of each of said metallic conducting wires; wherein said coated conducting wires are twisted together.