A surface mount common mode inductor suitable for tape and reel packaging

Abstract

This utility model discloses a surface mount common mode inductor suitable for tape and reel packaging, comprising a base, a magnetic core, windings, and terminals. The magnetic core is mounted at the bottom of the base, with copper wire wound around its head and tail to form windings. Terminal tops and bottoms are respectively located at the top and bottom of the base's corner supports, with the copper wires connected to the terminal tops by soldering. An insulating plate is installed inside the base to separate the windings, and the components are fixed with adhesive. The terminal bottoms serve as solder points adapted to PCB surface mount technology. This design, through structural improvements, solves the problems of large thickness and low production efficiency of traditional through-hole inductors, achieving the technical effects of thinner and lighter electronic products, automated production, and optimized electrical performance.

Description

Technical Field

[0001] This utility model belongs to the field of inductors, and in particular relates to a surface mount common mode inductor suitable for tape and reel packaging. Background Technology

[0002] Currently, most common mode inductors on the market are plug-in type, which has significant drawbacks: First, they are relatively tall in the circuit board, resulting in thick electronic products that cannot meet the design trend of miniaturization and thinness; second, subsequent assembly and production are mainly done by manual plug-in, which has low production efficiency and high manufacturing costs; third, the traditional design lacks an effective isolation structure between windings, which poses a risk of breakdown under high voltage / current conditions and affects product reliability. Utility Model Content

[0003] The purpose of this invention is to provide a surface mount common-mode inductor suitable for tape and reel packaging, aiming to solve the problems existing in the background art. To achieve this purpose, the technical solution adopted by this invention is:

[0004] A surface mount common mode inductor suitable for tape and reel packaging includes a base and a magnetic core. The magnetic core is mounted on the bottom of the base. The head and tail of the magnetic core are provided with copper wires to form windings. The top and bottom of the support feet at the corners of the base are respectively provided with terminal tops and terminal bottoms. The beginning and end of the copper wires are connected to the terminal tops.

[0005] Four terminals are provided at the top and bottom of the base. The top and bottom of the four terminals are located at the left and right corners of the base.

[0006] An insulating plate is installed in the middle of the winding.

[0007] Adhesive is applied to the insulating plate to attach the windings and magnets to the base.

[0008] The bottom of the terminal is the solder point for soldering the common mode inductor onto the circuit board.

[0009] The beneficial effects of this utility model are:

[0010] Structural innovation brings multiple technological advantages: the use of a surface-mount structure instead of a through-hole structure significantly reduces the mounting height of the inductor on the circuit board, thereby reducing the overall thickness of electronic products and meeting the requirements for ultra-thin designs; it is compatible with tape and reel packaging processes, and welding can be completed through automated surface mount machines, significantly improving production efficiency and reducing costs; an insulating plate is set inside the base to isolate voltage / current between windings, avoiding the risk of breakdown and improving stability and safety; and the use of adhesive to fix the windings and magnetic core, combined with terminal welding technology, enhances the structural stability of the inductor in complex environments. Attached Figure Description

[0011] Figure 1A schematic diagram of the overall top surface provided for an embodiment of this utility model;

[0012] Figure 2 A schematic diagram of the overall bottom structure provided for an embodiment of this utility model.

[0013] The following are the labeling elements in the figure:

[0014] 1. Winding; 2. Insulating plate; 3. Magnetic core; 4. Terminal bottom; 5. Terminal top; 6. Base; 7. Adhesive. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] like Figures 1-2As shown, this utility model embodiment provides a surface mount common mode inductor suitable for tape and reel packaging, including a base 6 and a magnetic core 3. The magnetic core 3 is installed at the bottom of the base 6. The head and tail of the magnetic core 3 are provided with copper wires wound to form a winding 1. The top and bottom of the support legs at the corners of the base 6 are respectively provided with terminal top 5 and terminal bottom 4. The beginning and end of the copper wire are connected to the terminal top 5.

[0020] There are four terminals, with the top 5 and bottom 4 of the terminals located at the left and right corners of the base 6.

[0021] An insulating plate 2 is installed in the middle of winding 1.

[0022] The insulating plate 2 is provided with adhesive 7, which is used to mount the winding 1 and the magnet onto the base 6.

[0023] Terminal 4 at the bottom is a solder point for soldering the common mode inductor onto the circuit board.

[0024] Working principle:

[0025] This surface-mount common-mode inductor operates on the principle of electromagnetic induction. Copper wire windings are wound around both ends of the magnetic core. When alternating current passes through the windings, the magnetic core generates an alternating magnetic field to suppress common-mode interference signals and filter out high-frequency noise. An insulating plate inside the base physically separates the two windings to ensure electrical safety. The top of the terminal is welded to the copper wire of the winding, and the bottom is fixed to the circuit board by reflow soldering to achieve electrical connection. Adhesive cures the magnetic core, windings and base into a whole to improve structural strength. Its surface-mount structure is compatible with tape and reel packaging processes, and can be picked up, positioned and soldered by automated equipment, replacing the manual insertion process.

[0026] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A chip common mode inductor suitable for use in a tape packaging, characterized by: It includes a base and a magnetic core. The magnetic core is installed at the bottom of the base. The head and tail of the magnetic core are provided with copper wire to form a winding. The top and bottom of the support feet at the corners of the base are respectively provided with terminal top and terminal bottom. The beginning and end of the copper wire are connected to the terminal top.

2. A patch common mode inductor suitable for use in a tape packaging according to claim 1, characterized in that: Four terminals are provided at the top and bottom of the base, and the four terminals at the top and bottom of the base are located at the left and right corners.

3. A patch common mode inductor suitable for use in a tape packaging according to claim 2, characterized in that: An insulating plate is provided in the middle of the winding.

4. A patch common mode inductor suitable for use in a tape packaging according to claim 3, characterized in that: The insulating plate is provided with adhesive, which is used to mount the winding and the magnetic core onto the base.

5. A patch common mode inductor suitable for use in a tape packaging according to claim 4, characterized in that: The bottom of the terminal is a solder point for soldering a common-mode inductor onto the circuit board.

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