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US 2020/0052673 A1Published application
Common-mode choke coil
AssigneeMurata Manufacturing Co., Ltd.
InventorKatsufumi SASAKI
Life of this patent
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Abstract
A common-mode choke coil includes a first filter unit and a second filter unit, each of which serves as a common-mode filter unit and is formed by arranging a primary coil and a secondary coil in a stacking direction. Of the first filter unit and the second filter unit, the first filter unit has a resonant frequency different from that of the second filter unit, and the line length is different between the primary coil and the secondary coil.
Claims20
A common-mode choke coil comprising:
- a plurality of common-mode filter units each formed by arranging a primary coil and a secondary coil in a stacking direction,
- wherein the plurality of common-mode filter units includes one common-mode filter unit whose resonant frequency is different from a resonant frequency of another common-mode filter unit and one common-mode filter unit in which a line length is different between the primary coil and the secondary coil.
Dependencies are inferred from the claim text.