Electronic component and method of manufacturing the same

• US 10,692,644 B2
• Filed: 12/13/2017
• Issued: 06/23/2020
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Muneuchi, Keita, Iso, Eiji
• Primary Examiner(s): Hinson, Ronald
• Application Number:
  US15/840,932
• Publication Number:
  US 20180182533A1
• Time in Patent Office: 923 Days
• Field of Search: 336 83
• CPC Class Codes: H01F 17/04 with magnetic core
• CPC Class Codes: H01F 2017/048 with encapsulating core, e.g. made of resin and magnetic powder
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• CPC Class Codes: H01F 27/2871 Pancake coils
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 27/324 Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of ferromagnetic material
• CPC Class Codes: H01F 41/061 Winding flat conductive wires or sheets
• CPC Class Codes: H01F 41/076 Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire

Abstract

An electronic component includes at least one coil including a winding part and lead-out end parts at both ends thereof, and a magnetic molded body having a mounting surface with the coil incorporated therein. The lead-out end parts are led out toward the mounting surface such that end surfaces of the lead-out end parts are arranged on the same plane as the mounting surface.

Claims

1. An electronic component comprising:

at least one coil including a winding part and a pair of lead-out end parts drawn from both ends of the winding part;

a magnetic molded body having a mounting surface with the coil incorporated therein; and

a plurality of external terminals formed only on the mounting surface and respectively contacting the end surfaces of the pair of lead out end parts, wherein

the winding part is formed by winding a conductor in two tiers, the conductor having a rectangular cross section, a wider surface of the conductor at each end of the conductor being parallel to the winding axis so that both ends of the conductor are located on the outer part of the winding portion,

the pair of lead-out end parts are led out toward the mounting surface with the wide surface at each of the pair of lead-out end parts being parallel to each other such that end surfaces of the pair of lead-out end parts are arranged only on the same plane as the mounting surface,

the end surfaces of the pair of lead-out end parts are cross sections of the conductor, and

the coil is incorporated in the magnetic molded body such that a winding axis of the coil is arranged to be parallel to the mounting surface of the magnetic molded body.

2. The electronic component according to claim 1, comprising a plurality of the coils, wherein at least two of the coils have the respective winding parts stacked in a winding axis direction of the coils.

3. The electronic component according to claim 2, wherein an intermediate layer is disposed between the stacked coils.

4. The electronic component according to claim 3, wherein the intermediate layer comprises an insulating layer having a major surface orthogonal to the mounting surface.

5. The electronic component according to claim 3, wherein the intermediate layer comprises a magnetic flux blocking sheet having a major surface orthogonal to the mounting surface.

6. The electronic component according to claim 3, wherein the intermediate layer is sandwiched by a pair of magnetic sheets.