A high current, low profile inductor includes a conductor coil surrounded by magnetic material to form an inductor body. The inductor coil is formed from a flat plate which is cut into a sine-shaped configuration and then is folded in accordion fashion to create a helical coil.

Inductor coil and method for making same

A high current, low profile inductor includes a conductor coil surrounded by magnetic material to form an inductor body. An inductor body is formed around the inductor coil and includes a resin and a magnetic material compressed while it is dry and surrounding the inside and the outside of the coil.

Method for making a high current low profile inductor

A method of manufacturing an electronic component including providing a wire having first and second ends and a pre-formed core, winding the wire about at least a portion of the pre-formed core and connecting the first and second wire ends to at least one terminal for mounting the component to a circuit, and using a wet press process to form a mixture of magnetic and/or non-magnetic material over at least a portion of the wire and pre-formed core, and harden the mixture without exposing the wire and pre-formed core to the damaging forces of a dry press process to form an electronic component with a generally planar top surface with which the component can be picked and placed on a circuit using conventional pick-and-place equipment.

Method of manufacturing an electronic component

PROBLEM TO BE SOLVED: To solve the problem of difficulties of further miniaturization and thinning in a conventional construction since the limit of miniaturization is 10 mm square and 5 mm high. SOLUTION: The module has an insulating magnetic body 20 formed by pressurizing and molding metal magnetic powder and binder, at least one coil 10 having a winding part 11 embedded in the magnetic body 20 and a plurality of lead parts 13, 14 led out of the winding part 11, a plurality of terminal electrodes 30 each of which has a coil connection part 32 and an element connection part 31 which are formed in one piece and which are fixed to the magnetic body 20 and an electronic component 40 constituting an electric circuit together with the coil 10. The lead parts 13, 14 are connected to the coil connection part 32, and the electronic component 40 is mounted on the element connection part 31. COPYRIGHT: (C)2003,JPO

Electronic circuit module

This inductor device (1) is provided with a magnetic body (2) and a conductor that is buried in the magnetic body (2). The conductor is provided with a first conductor (3), which is a metal pin. The magnetic body (2) has the form of a plate that has a first main surface and a second main surface facing each other and having a predetermined shape and a lateral surface that connects the first main surface and the second main surface with each other. The conductor is provided with the first conductor (3), which has one end exposed from the second main surface of the magnetic body (2), and a second conductor (4) that is connected to the other end of the first conductor (3). The conductor is arranged so that the first conductor (3) is perpendicular to the first main surface and the second main surface of the magnetic body (2) and the second conductor (4) is parallel to the first main surface and the second main surface of the magnetic body (2). Due to this configuration, an inductor device, an inductor array and a multilayer substrate, each of which has high reliability and comprises a conductor having low specific resistance with small variation, are provided.

Inductor device, inductor array, multilayer substrate and method of manufacturing inductor device

PURPOSE: To obtain a small-sized stationary induction apparatus which is little deteriorated in its characteristics and exerts small magnetic effects on its periphery, by burying coils into resin with a dispersed ferromagnetic material and molding this resin to form an iron core. CONSTITUTION: Coils provided with windings 11, 12 so as to form an opening along a central axis are buried into a base material 16, having an insulating property, such as resin with ferromagnetic material powder dispersed therein, and the base material 16 with the ferromagnetic material powder dispersed therein is molded into a desired shape, so that the base material, with which an opening part 14 is filled, functions as an iron core with windings provided therearound. The base material 16 put in the ferromagnetic material powder having the insulating property, in this iron core, functions to reduce an eddy current. Since the coils 15 are also surrounded with the base material 16, corresponding to the iron core, with the ferromagnetic material dispersed therearound, a magnetic circuit passing gaplessly through the opening in the center of the coils 15 is formed around the coils 15. Hence, almost no flux leaks outside and so magnetic effects exerted on the outside can be reduced. COPYRIGHT: (C)1988,JPO&Japio

Takao Maeda

Papers

Stationary induction apparatus