COIL COMPONENT

• US 20160240306A1
• Filed: 02/04/2016
• Published: 08/18/2016
• Est. Priority Date: 02/13/2015
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: KANBE, Yuki
• Granted Patent: US 10,347,415 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 17/045 with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
• CPC Class Codes: H01F 2017/0093 Common mode choke coil
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• CPC Class Codes: H01F 27/292 Surface mounted devices

Abstract

A coil component has a core having a winding core portion and a flange portion disposed on each of both ends of the winding core portion, the flange portion including a foot portion; a wire wound around the winding core portion; an electrode portion disposed on a bottom surface of the foot portion of the flange portion and connected to the wire; a metal terminal to be connected via a mounting solder to a mounting substrate; and a joining member connecting the metal terminal to the electrode portion. The joining member has a heat resistance property retaining a connection state between the electrode portion and the metal terminal at least at the melting point of the mounting solder.

Claims

1. A coil component comprising:

a core having a winding core portion and a flange portion disposed on each of both ends of the winding core portion, the flange portion including a foot portion;

a wire wound around the winding core portion;

an electrode portion disposed on a bottom surface of the foot portion of the flange portion and connected to the wire;

a metal terminal to be connected via a mounting solder to a mounting substrate; and

a joining member connecting the metal terminal to the electrode portion, wherein

the joining member has a heat resistance property retaining a connection state between the electrode portion and the metal terminal at least at the melting point of the mounting solder.

2. The coil component according to claim 1, wherein

the foot portion has a cutout disposed on a side surface, and wherein the joining member is embedded in the cutout.

3. The coil component according to claim 1, wherein

the metal terminal has a first connecting portion connected to the electrode portion, a second connecting portion to be connected to the mounting substrate, and a coupling portion coupling the first connecting portion and the second connecting portion such that the first connecting portion and the second connecting portion have a difference in height.

4. The coil component according to claim 3, wherein

an end portion of the coupling portion closer to the first connecting portion is positioned immediately under the bottom surface of the foot portion.

5. The coil component according to claim 3, wherein

the second connecting portion is disposed with a rising portion for connection by the mounting solder.

6. The coil component according to claim 1, wherein

the metal terminal is not positioned immediately under a winding portion of the wire wound around the winding core portion.

7. The coil component according to claim 1, wherein

the metal terminal is connected by thermocompression bonding via the joining member to the electrode portion.

8. The coil component according to claim 1, wherein

the joining member is made of a Sn—

Sb-based solder.

9. The coil component according to claim 1, wherein

the joining member is made of a Bi-based solder.

10. The coil component according to claim 1, wherein

the joining member is made of a conductive adhesive.