Common mode filter
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsWon Chul SIM, Young Seuck YOO, Hye Won BANG
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Abstract
A multilayer common mode filter includes: a body including a coil part having a plurality of spiral coils, wherein the coil part has one lead portion connected to one of external electrodes disposed on the body and one or more dummy lead portions each connected to the other external electrodes, and the lead portion is connected to dummy lead portions of other coil layers stacked in a thickness direction in series. Therefore, even though the common mode filter is miniaturized, the common mode filter may secure predetermined levels or more of performance and reliability.
Claims12
A common mode filter comprising:
- a body including a first magnetic body, a coil part disposed on the first magnetic body and including a plurality of coil layers including spiral coils and stacked in a thickness direction, and a second magnetic body disposed on the coil part;
- and
- a plurality of external electrodes disposed on two surfaces of the body opposing each other so that the plurality of external electrodes face each other,
- wherein one of the plurality of coil layers has a lead portion connected to one of the external electrodes and one or more dummy lead portions each connected to the other external electrodes, and
- the lead portion of the one of the plurality of coil layers is connected to dummy lead portions of other coil layers stacked in the thickness direction in series.
A common mode filter comprising:
- a body including a magnetic substrate, a coil part disposed on the magnetic substrate and including a plurality of spiral coils disposed to face each other in a thickness direction, and a magnetic body disposed on the coil part;
- and
- a plurality of external electrodes disposed on two surfaces of the body opposing each other so as to face each other,
- wherein the coil part has a lead portion connected to one of the external electrodes, and further has one or more dummy lead portions disposed on the same horizontal surface as a horizontal surface on which the lead portion is disposed so as to be respectively connected to the other external electrodes per coil, and the lead portion is connected to other dummy lead portions stacked to face the lead portion in the thickness direction in series.
Dependencies are inferred from the claim text.