SURFACE-MOUNT INDUCTOR AND A METHOD FOR MANUFACTURING THE SAME

• US 20160225516A1
• Filed: 01/27/2016
• Published: 08/04/2016
• Est. Priority Date: 01/30/2015
• Status: Abandoned Application

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: TOKO Incorporated (Murata Manufacturing Co Limited)
• Inventors: KITAMURA, Kazuhisa
• Application Number:
  US15/007,385
• Publication Number:
  US 20160225516A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 17/043 with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• CPC Class Codes: H01F 27/292 Surface mounted devices
• CPC Class Codes: H01F 41/005 Impregnating or encapsulating insulating of windings H01F41/12

Abstract

A surface-mount inductor, having a coil formed by winding an insulated wire, and a mounting body incorporating the coil where the coil has lead ends, which are extended over the mounting face of the mounting body, the mounting face has a recessed portion formed by removing insulation of the lead ends, and the recessed portion is filled with sealant to make the mounting face of the mounting body flat, as well as a method for manufacturing the same are herein disclosed.

Claims

1. A surface-mount inductor having a coil made by winding an insulated wire, and a mounting body accommodating the coil inside, wherein

the coil has lead ends,

the lead ends extend over a mounting face of the mounting body,

the mounting face of the mounting body has a recessed portion formed by removing insulation from the lead ends, and

the recessed portion is filled with metal so that the mounting face of the mounting body are flat.

2. The surface-mount inductor according to claim 1, wherein

the recessed portion is filled with a metal layer consisting of a combination of an Sn layer, an Ag layer and a Ni layer.

3. A method for manufacturing a surface-mount inductor having a coil made by winding an insulated wire, and a mounting body accommodating the coil inside, comprising the steps of:

forming a coil;

incorporating the coil in the mounting body and extending lead ends of the coil over the mounting face of the mounting body;

removing insulation from the lead ends; and

filling a recessed portion, formed by removing insulation from the lead ends, with metal to form a surface to be level with the mounting face of the mounting body so as to make external terminals.