Electronic component

Patent metadata

Field	Value
Publication number	US-12154707-B2
Application number	US-202117518668-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	Apr 20, 2020
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

An electronic component includes a multilayer body including first and second principal surfaces opposite to each other in a stacking direction and including long sides and short sides, capacitor electrodes defining capacitors, coil conductors including a winding axis parallel or substantially parallel to the stacking direction and defining inductors, terminal electrodes connected to the coil conductors and the capacitor electrodes, and dummy electrodes not connected to the terminal electrodes and extending along the long sides of the multilayer body. The coil conductors are closer to the first principal surface than the capacitor electrodes in the stacking direction. The dummy electrodes are closer to the first principal surface than the coil conductors. The dummy electrodes do not overlap the coil opening of the coil conductors when viewed in the stacking direction.

First claim

What is claimed is:

1. An electronic component comprising:
a multilayer body including a first principal surface and a second principal surface opposite to each other in a stacking direction of base layers, and having a rectangular or substantially rectangular parallelepiped shape in which the first principal surface and the second principal surface include a long side and a short side;
capacitor electrodes defining a capacitor;
coil conductors including a winding axis parallel or substantially parallel to the stacking direction and defining at least one inductor;
terminal electrodes connected to the coil conductors and the capacitor electrodes; and
at least one dummy electrode not connected to the terminal electrodes and extending along the long side of the multilayer body; wherein
the coil conductors are closer to the first principal surface than the capacitor electrodes in the stacking direction;
the at least one dummy electrode is closer to the first principal surface than the coil conductors in the stacking direction; and
the at least one dummy electrode does not overlap a coil opening of the coil conductors when viewed in the stacking direction.

2. The electronic component according to claim 1 , wherein the terminal electrodes are exposed on the second principal surface.

3. The electronic component according to claim 1 , wherein the at least one dummy electrode is on the first principal surface.

4. The electronic component according to claim 1 , wherein
the at least one dummy electrode includes a plurality of dummy electrodes; and
each of the plurality of dummy electrodes includes a conductive pattern.

5. The electronic component according to claim 4 , wherein the plurality of dummy electrodes extend along a first long side and a second long side, respectively, of the first principal surface, the first long side being opposite to the second long side.

6. The electronic component according to claim 5 , wherein the plurality of dummy electrodes include a plurality of conductive patterns extending along the first long side, and a plurality of conductive patterns extending along the second long side.

7. The electronic component according to claim 1 , wherein the at least one dummy electrode overlaps the coil conductors when viewed in the stacking direction.

8. The electronic component according to claim 1 , wherein the inductor and the capacitor define an LC filter.

9. The electronic component according to claim 1 , wherein the terminal electrodes include first, second, third, and fourth terminal electrodes on the second principal surface.

10. The electronic component according to claim 1 , wherein a direction identifying mark is provided on the first principal surface.

11. The electronic component according to claim 1 , wherein ends of the coil conductors are connected to one another by a via conductor.

12. The electronic component according to claim 1 , further comprising side terminal electrodes in electrical communication with respective ones of the terminal electrodes.

13. The electronic component according to claim 1 , wherein the at least one inductor includes a first inductor and a second inductor that are magnetically coupled to one another.

14. The electronic component according to claim 13 , wherein the first and second inductors are connected in series with one another and the capacitor is connected in shunt to the first and second inductors.

Assignees

• Murata Manufacturing Co

Inventors

• Shigematsu Satoshi

Classifications

• H01F27/24

  Magnetic cores · CPC title

• H01F17/0013

  with stacked layers · CPC title

• H01F27/292

  Surface mounted devices · CPC title

• H01G4/40

  Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations · CPC title

• H01F27/004 Primary

  Arrangements for interchanging inductances, transformers or coils thereof · CPC title