Electronic component

Patent metadata

Field	Value
Publication number	US-11227715-B2
Application number	US-201615293700-A
Country	US
Kind code	B2
Filing date	Oct 14, 2016
Priority date	Jun 4, 2014
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

An electronic component includes a main body made of an insulator, a circuit element positioned inside the main body, and outer electrodes. The outer electrodes are constituted of bottom surface electrodes and post-like electrodes. The post-like electrodes are extended from a bottom surface of the main body toward the interior of the main body. Further, the post-like electrodes are embedded in the main body, and parts of the post-like electrodes are exposed to side surfaces of the main body. Furthermore, the bottom surface electrodes are made of a resin containing metal powder.

First claim

The invention claimed is:

1. An electronic component comprising:
a main body made of an insulator;
a circuit element positioned inside the main body; and
an outer electrode that is constituted of a bottom surface electrode positioned on a bottom surface of the main body and a post-like electrode extending from the bottom surface toward an interior of the main body, and that is electrically connected to the circuit element, a thickness of the bottom surface electrode in a direction orthogonal to the bottom surface becoming thinner as the bottom surface electrode progresses from a side surface side of the main body toward an inner side of the main body,
wherein the post-like electrode is embedded in the main body,
part of the post-like electrode is exposed to the side surface of the main body,
the bottom surface electrode is made of a resin containing metal powder,
a plating is applied to a surface of the bottom surface electrode and the side surface of the main body to which the post-like electrode is exposed, the plating extending from the bottom surface electrode to an uppermost tip formed on the side surface of the main body, the uppermost tip being lower than a top surface of the main body in side view, and
the thickness of the bottom surface electrode in the direction orthogonal to the bottom surface becoming thinner as the bottom surface electrode progresses from the side surface side of the main body toward the inner side of the main body increases a contact area between the bottom surface of the bottom surface electrode and solder of a terminal of a substrate when the electronic component is mounted on the substrate.

2. The electronic component according to claim 1 ,
wherein, when viewed in a direction orthogonal to the bottom surface, a length of an exposed portion of the post-like electrode, which is exposed to the side surface of the main body, is shorter than a longest length of an embedded portion of the post-like electrode, which is embedded in the main body, in a direction parallel to the side surface.

3. The electronic component according to claim 1 ,
wherein, when viewed in a direction orthogonal to the bottom surface, a length of the post- like electrode in a direction parallel to the side surface becomes longer as the post-like electrode progresses from the side surface toward the interior of the main body.

4. The electronic component according to claim 1 ,
wherein an area of the bottom surface electrode when viewed in a direction orthogonal to the bottom surface is larger than an area of an exposed portion of the post-like electrode, which is exposed to the side surface of the main body.

5. The electronic component according to claim 1 ,
wherein, when viewed in a direction orthogonal to the bottom surface, a length of the bottom surface electrode is longer than a length of the post-like electrode in a direction from the side surface of the main body toward the interior of the main body.

6. The electronic component according to claim 1 ,
wherein, when viewed in a direction orthogonal to the bottom surface, the post-like electrode is positioned within the bottom surface electrode.

7. The electronic component according to claim 1 ,
wherein an area of a cross-section of the post-like electrode in parallel to the bottom surface is larger than an area of a cross-section of a conductor constituting the circuit element, the cross- section of the conductor being orthogonal to an extension direction of the conductor.

8. The electronic component according to claim 1 ,
wherein the main body includes a resin containing metallic magnetic powder.

9. An electronic component comprising:
a main body made of an insulator;
a circuit element positioned inside the main body; and
an outer electrode that is constituted of a bottom surface electrode positioned on a bottom surface of the main body and a post-like electrode extending from the bottom surface toward an interior of the main body, and that is electrically connected to the circuit element, a thickness of the bottom surface electrode in a direction orthogonal to the bottom surface becoming thinner as the bottom surface electrode progresses from a side surface side of the main body toward an inner side of the main body,
wherein the post-like electrode is embedded in the main body,
part of the post-like electrode is exposed to the side surface of the main body,
the bottom surface electrode is made of a resin containing metal powder, and
a plating is applied to a surface of the bottom surface electrode and the side surface of the main body to which the post-like electrode is exposed, the thickness of the plating in the direction orthogonal to the bottom surface becoming thinner as the plating progresses from the side surface side of the main body toward the inner side of the main body.

10. The electronic component according to claim 9 ,
wherein, when viewed in a direction orthogonal to the bottom surface, a length of an exposed portion of the post-like electrode, which is exposed to the side surface of the main body, is shorter than a longest length of an embedded portion of the post-like electrode, which is embedded in the main body, in a direction parallel to the side surface.

11. The electronic component according to claim 9 ,
wherein, when viewed in a direction orthogonal to the bottom surface, a length of the post- like electrode in a direction parallel to the side surface becomes longer as the post-like electrode progresses from the side surface toward the interior of the main body.

12. The electronic component according to claim 9 ,
wherein an area of the bottom surface electrode when viewed in a direction orthogonal to the bottom surface is larger than an area of an exposed portion of the post-like electrode, which is exposed to the side surface of the main body.

13. The electronic component according to claim 9 ,
wherein, when viewed in a direction orthogonal to the bottom surface, a length of the bottom surface electrode is longer than a length of the post-like electrode in a direction from the side surface of the main body toward the interior of the main body.

14. The electronic component according to claim 9 ,
wherein, when viewed in a direction orthogonal to the bottom surface, the post-like electrode is positioned within the bottom surface electrode.

15. The electronic component according to claim 9 ,
wherein an area of a cross-section of the post-like electrode in parallel to the bottom surface is larger than an area of a cross-section of a conductor constituting the circuit element, the cross- section of the conductor being orthogonal to an extension direction of the conductor.

16. The electronic component according to claim 9 ,
wherein the main body includes a resin containing metallic magnetic powder.

17. The electronic component according to claim 9 ,
wherein the plating extends from a bottom surface of the bottom surface electrode to at least an upper side of the circuit element.

18. The electronic component according to claim 9 , wherein the thickness of the bottom surface electrode in the direction orthogonal to the bottom surface becoming thinner as the bottom surface electrode progresses from the side surface side of the main body toward the inner side of the main body increases a contact area between the bottom surface of the bottom surface electrode and solder of a terminal of a substrate when the electronic component is mounted on the substrate.

Assignees

• Murata Manufacturing Co

Inventors

• Hamada Akinori
• Kudo Hayami
• Okura Ryo
• Otani Shinji

Classifications

• H01F41/041

  Printed circuit coils (apparatus or processes for manufacturing printed circuits in general H05K3/00) · CPC title

• H01F27/255

  made from particles (H01F27/26 takes precedence) · CPC title

• H01F41/10

  Connecting leads to windings (making electric connections in general H01R43/00) · CPC title

• H01F17/0013

  with stacked layers · CPC title

• H05K3/32

  electrically connecting electric components or wires to printed circuits · CPC title