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Inductor component

A technology for inductors and components, applied in the field of wire-wound inductor components, can solve the problems of reduced impedance, low self-resonant frequency of inductor components, large capacitance, etc., to achieve stable high-frequency characteristics, good high-frequency characteristics, Position stabilization effect

Inactive Publication Date: 2018-07-03
MURATA MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to this winding method, the self-resonant frequency of the inductor component becomes low, and the capacitance is very large on the high-frequency side higher than the self-resonant frequency, so the drop in impedance is remarkable.

Method used

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Embodiment Construction

[0038] refer to Figure 1 to Figure 7 , the inductor component 31 according to the first embodiment of the present invention will be described.

[0039] Such as figure 1As clearly shown, the inductor component 31 is provided with the drum-shaped iron core 33 which has the winding core part 32 extended in the longitudinal direction. The drum core 33 includes a pair of flange portions 34 , 35 respectively provided at respective ends of the winding core portion 32 . In addition, the inductor component 31 includes a plate-shaped core 37 spanned between a pair of flange portions 34 and 35 and bonded to the drum-shaped core 33 via an adhesive 36 . Both the drum core 33 and the plate core 37 are made of a magnetic material such as ferrite, and constitute a closed magnetic circuit.

[0040] Such as figure 2 As indicated by the dashed lines, the winding core portion 32 included in the drum core 33 has a hexagonal cross-sectional shape close to a quadrilateral, and is located sligh...

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Abstract

The invention provides an inductor component with high inductance and a good DC superposition characteristic. The inductor component can realize high resistance in the high frequency side that is higher than the self-resonance frequency. The inductor component includes a drum core (33) including a winding core portion (32) extending along a longitudinal direction and a pair of flange portions (34,35) disposed on end portions of the winding core portion, a plate core (37) arranged between the pair of flange portions, a wire (38) wound around the winding core portion and a pair of terminal electrodes (39, 40) that are electrically connected to the end portions of the wire. The drum core and the plate core are made of a magnetic material. An average distance (G) between the plate core and the pair of flange portions is no less than about 20 [mu]m and no more than about 50 [mu]m. The wire includes aligned banked winding portions (B1-B4) arranged along the longitudinal direction and more than half of a total number of turns of the wire belong to the aligned banked winding portions (B1-B4).

Description

technical field [0001] The present invention relates to an inductor component, and more particularly to a winding wire having a structure in which a plate-like core is spanned between a pair of flanges of a drum-shaped core and a wire is wound around a winding core of the drum-shaped core. type inductor components. Background technique [0002] In an inductor component having a drum-shaped iron core made of a magnetic material, if the plate-shaped iron core made of a magnetic material is bonded to the drum-shaped iron core Combined, thereby forming a closed magnetic circuit, high inductance can be achieved. [0003] However, this structure is generally effective only for low-frequency applications because it utilizes the characteristic of high relative magnetic permeability of ferrite. [0004] In addition, it is known that an inductor component provided with a plate-shaped iron core made of a magnetic material generally has poor DC superposition characteristics. Therefor...

Claims

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Application Information

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IPC IPC(8): H01F17/04H01F27/24H01F27/30H01F27/29
CPCH01F17/045H01F27/24H01F27/292H01F27/306H01F5/04
Inventor 宫本昌史
Owner MURATA MFG CO LTD
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