US-20260128493-A1 - ELECTRONIC COMPONENT

US20260128493A1US 20260128493 A1US20260128493 A1US 20260128493A1US-20260128493-A1

Abstract

An electronic component includes a base body having a mounting surface and a main surface facing each other, a first electrode, a second electrode, a third electrode, and a fourth electrode disposed on the mounting surface, a first transmission line electrically connecting the first electrode and the second electrode, a second transmission line electrically connecting the third electrode and the fourth electrode and magnetically coupled to the first transmission line, and a capacitor provided between the first electrode and the third electrode and/or between the second electrode and the fourth electrode.

Inventors

Takeshi Oohashi

Assignees

TDK CORPORATION

Dates

Publication Date: 20260507
Application Date: 20251104
Priority Date: 20241105

Claims (10)

1 . An electronic component comprising: a base body having a mounting surface and a main surface facing each other; a first electrode, a second electrode, a third electrode, and a fourth electrode disposed on the mounting surface; a first transmission line electrically connecting the first electrode and the second electrode; a second transmission line electrically connecting the third electrode and the fourth electrode and magnetically coupled to the first transmission line; and a capacitor provided between the first electrode and the third electrode and/or between the second electrode and the fourth electrode.
2 . The electronic component according to claim 1 , wherein the capacitor is constituted by a plurality of conductors disposed at the same height position in a facing direction between the mounting surface and the main surface.
3 . The electronic component according to claim 2 , wherein the plurality of conductors include at least a first conductor, a second conductor, and a third conductor, and the second conductor is disposed between the first conductor and the third conductor when viewed from the facing direction.
4 . The electronic component according to claim 1 , wherein a first capacitor is provided between the first electrode and the third electrode, a second capacitor is provided between the second electrode and the fourth electrode, and a capacitance of the first capacitor is different from a capacitance of the second capacitor.
5 . The electronic component according to claim 2 , comprising: a ground electrode disposed on the mounting surface and connected to ground; and a resistor provided in an electrical path between the ground electrode and the second transmission line.
6 . The electronic component according to claim 5 , wherein a first capacitor is provided between the first electrode and the third electrode, a second capacitor is provided between the second electrode and the fourth electrode, and the resistor is disposed at a position closer to the plurality of conductors constituting the second capacitor than to the plurality of conductors constituting the first capacitor.
7 . The electronic component according to claim 1 , comprising a third capacitor and a fourth capacitor provided in an electrical path between the third electrode and the fourth electrode which include the second transmission line.
8 . The electronic component according to claim 7 , comprising: a first resistor electrically connected in series to the third capacitor; and a second resistor electrically connected in parallel to the fourth capacitor.
9 . The electronic component according to claim 7 , wherein the capacitor is constituted by a plurality of conductors disposed at the same height position in a facing direction between the mounting surface and the main surface, and an area of a region in which the plurality of conductors are disposed is larger than an area of the conductors constituting each of the third capacitor and the fourth capacitor.
10 . The electronic component according to claim 2 , wherein the plurality of conductors are directly connected to any of the conductors connected in the facing direction between the mounting surface and the main surface in each of the first electrode, the second electrode, the third electrode, and the fourth electrode.

Description

TECHNICAL FIELD The present disclosure relates to an electronic component BACKGROUND Japanese Unexamined Patent Publication No. 2009-44303 discloses an electronic component that includes a laminate made of a dielectric material, a set of input/output terminals, a detection terminal, and a termination terminal that are provided on a lower surface of the laminate, a main transmission line provided within the laminate and a sub transmission line that is coupled to the main transmission line, and a first attenuator and a second attenuator disposed on an upper surface of the laminate, in which respective ends of the main transmission line are connected to the input/output terminals, the sub transmission line has one end connected to the first attenuator and the other end connected to the second attenuator, the first attenuator is connected to the detection terminal via a first inductor provided inside the laminate, and the second attenuator is connected to the termination terminal via a second inductor provided inside the laminate. SUMMARY When an electronic component becomes smaller in size, isolation thereof is deteriorated by formation of capacitance resulting from a reduced distance between the main transmission line and the sub transmission line provided in the base body (laminate), or by a reverse current due to a loop. An objective of the present disclosure is to provide an electronic component capable of achieving improvement in isolation. (1) An electronic component according to one aspect of the present disclosure includes a base body having a mounting surface and a main surface facing each other, a first electrode, a second electrode, a third electrode, and a fourth electrode disposed on the mounting surface, a first transmission line electrically connecting the first electrode and the second electrode, a second transmission line electrically connecting the third electrode and the fourth electrode and magnetically coupled to the first transmission line, and a capacitor provided between the first electrode and the third electrode and/or between the second electrode and the fourth electrode. The electronic component according to one aspect of the present disclosure includes the capacitor provided between the first electrode and the third electrode and/or between the second electrode and the fourth electrode. As described above, in the electronic component, when a capacitance is formed by providing a capacitor between the first electrode and the third electrode and/or between the second electrode and the fourth electrode, a high level of isolation can be realized even when a distance between the first transmission line (main transmission line) and the second transmission line (sub transmission line) is small. Therefore, improvement in isolation can be achieved in the electronic component. (2) In the electronic component of (1) described above, the capacitor may be constituted by a plurality of conductors disposed at the same height position in a facing direction between the mounting surface and the main surface. In this configuration, the capacitance of the capacitor can be easily adjusted. This configuration is particularly effective for forming a minute capacitance in the capacitor. (3) In the electronic component of (2) described above, the plurality of conductors may include at least a first conductor, a second conductor, and a third conductor, and the second conductor may be disposed between the first conductor and the third conductor when viewed from the facing direction. In this configuration, the capacitance of the capacitor can be adjusted by adjusting the area over which adjacent conductors face each other. (4) In the electronic component of any one of (1) to (3) described above, a first capacitor may be provided between the first electrode and the third electrode, a second capacitor may be provided between the second electrode and the fourth electrode, and a capacitance of the first capacitor may be different from a capacitance of the second capacitor. In this way, when two capacitors, the first capacitor and the second capacitor having different capacitances are provided as the capacitor, it is possible to easily adjust the capacitance of the capacitor in the electronic component. (5) The electronic component of any one of (1) to (4) described above may include a ground electrode disposed on the mounting surface and connected to ground, and a resistor provided in an electrical path between the ground electrode and the second transmission line. (6) In the electronic component of (5) described above, a first capacitor may be provided between the first electrode and the third electrode, a second capacitor may be provided between the second electrode and the fourth electrode, and the resistor may be disposed at a position closer to the plurality of conductors constituting the second capacitor than to the plurality of conductors constituting the first capacitor. (7) The electronic component of any