Electronic component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10340072-B2
Application number	US-201615204113-A
Country	US
Kind code	B2
Filing date	Jul 7, 2016
Priority date	Jan 31, 2014
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

An electronic component includes a body made of a material containing particles of a metallic magnetic material, and an outer electrode disposed on a surface of the body. The surface of the body has a contact portion with which the outer electrode is in contact, and the surface of the body includes particles of the metallic magnetic material which are exposed from the surface of the body.

First claim

The invention claimed is:

1. An electronic component, comprising:
a body made of a material containing particles of a metallic magnetic material; and
an outer electrode disposed on a surface of the body,
wherein,
the surface of the body has a contact portion which is in direct contact with the outer electrode, and the contact portion includes particles of the metallic magnetic material which are exposed from the surface of the body,
surfaces of the particles of the metallic magnetic material are coated with respective insulating films, and
at the contact portion, the insulating films are removed to expose the particles of the metallic magnetic material.

2. The electronic component according to claim 1 ,
wherein the particles of the metallic magnetic material at the contact portion are exposed through forming the contact portion by cutting.

3. The electronic component according to claim 1 ,
wherein the body has a rectangular cuboid shape and has a mounting surface that is to face a circuit board in a mounting process, and opposing first and second end surfaces adjacent to the mounting surface, and
wherein the outer electrode extends into at least one of the mounting surface and the first end surface.

4. The electronic component according to claim 1 ,
wherein the outer electrode includes a close-contact layer made of Ti, Cr, or Ni.

5. The electronic component according to claim 1 ,
wherein the outer electrode is made of Cu, Ag, or an alloy of Cu and Ag.

6. The electronic component according to claim 1 , further comprising:
a circuit element mounted in the body and electrically connected to the outer electrode.

Assignees

• Murata Manufacturing Co

Inventors

• Kitajima Masaki
• Tomohiro Takashi
• SHINOHARA Gota
• Suzuki Hironori
• Shimizu Noriko

Classifications

• H01F2017/0066

  with a magnetic layer · CPC title

• H01F17/0033

  with the coil helically wound around a magnetic core · CPC title

• H01F41/0246

  Manufacturing of magnetic circuits by moulding or by pressing powder (magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36) · CPC title

• H01F41/0206

  Manufacturing of magnetic cores by mechanical means (magnetic cores per se H01F27/24) · CPC title

• H01F41/046

  structurally combined with ferromagnetic material · CPC title