Patent ID: 6917273
Filing Date: 2005-07-12
Classification: H01F

Abstract:
1. A common mode choke coil comprising: a Mn—Zn ferrite core which is shaped square, forms a closed magnetic path, and which has an initial permeability of at least 3,000 at 100 kHz and at least 100 at 10 MHz at room temperature; and a first and second edgewise winding which is formed of a first rectangular insulated wire, and which is provided around a core leg of said Mn—Zn ferrite core; and second edgewise winding which is formed of second rectangular insulated wire, and which is provided around a core leg of said Mn—Zn ferrite core located oppositely to said core leg having said first edgewise winding provided therearound, said second edgewise winding being wired independent of said first edgewise winding.