Field effect transistor capable of being quickly replaced

Abstract

The utility model provides a field effect transistor capable of being quickly replaced, which comprises a metal oxide semiconductor (MOS) transistor main body, the MOS transistor main body is packaged in an external packaging structure, and three pins which extend out of the bottom of the external packaging structure and can be inserted into corresponding holes on a circuit board are further packaged in the external packaging structure. Each pin is a variable crimping pin which can be directly inserted into the hole and is fixed with the inner wall of the hole in an interference manner; the field effect transistor capable of being quickly replaced is simple, convenient and quick to disassemble and assemble.

Description

Technical Field

[0001] This invention belongs to the field of electronic components, specifically relating to a field effect device that can be quickly replaced. Background Technology

[0002] MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) are metal-oxide-semiconductor field-effect transistors, also known as metal-insulator-semiconductor field-effect transistors. They are separated by a thin layer of silicon dioxide. MOSFETs have multiple functions, such as switching and blocking functions. The use of MOSFETs has brought great convenience to electronic devices and is often used in motor drives, power supplies, battery protection and other fields.

[0003] Currently, the installation of MOSFETs typically requires inserting the pins into corresponding holes on the circuit board before soldering. MOSFETs are semiconductors used to control current, and they are often damaged by excessive current. Repairing them requires desoldering the faulty component, replacing it with a new one, and then soldering it again, which is cumbersome. Therefore, improvements are needed. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a quick-replaceable field-effect transistor to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0006] A quick-replaceable field-effect transistor includes a MOSFET body, which is encapsulated within an external package structure. The external package structure also encapsulates three pins that extend beyond the bottom of the external package structure and can be inserted into corresponding holes on a circuit board. Each pin is a variable-form crimp pin that can be directly inserted into the hole and interfered with and fixed to the inner wall of the hole.

[0007] Furthermore, the upper part of the MOS transistor body extends beyond the top of the external packaging structure and is provided with mounting holes.

[0008] Furthermore, the three pins are arranged side by side, and the MOS transistor body is integrally connected to the middle pin.

[0009] Furthermore, the portion of the pin located in the middle and the part of the MOS transistor body extending beyond the top of the external package structure is the gate, and one of the two pins located on the left and right sides is the source and the other is the drain.

[0010] Furthermore, each pin has a deformable hole, and the two sides of the deformable hole are arc-shaped interference arms. The lower ends of the two arc-shaped interference arms are connected, the upper ends of the two arc-shaped interference arms are connected, and the convex arc surfaces of the two arc-shaped interference arms face opposite directions.

[0011] Furthermore, the bottom of the external package structure protrudes on both sides of each pin to form a foot.

[0012] Compared with the prior art, the main advantages of this utility model are: by designing the pins as variable crimping feet that can be directly inserted into the hole and fixed to the inner wall of the hole, when repairing or replacing, it is only necessary to use tools to pull the component (field-effect transistor) out of the hole of the circuit board and insert the new component. The disassembly and assembly operation is simple and quick. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the quick-replaceable field-effect transistor of this utility model. Figure 1 ;

[0014] Figure 2 This is a three-dimensional schematic diagram of the quick-replaceable field-effect transistor of this utility model. Figure 2 ;

[0015] Figure 3 This is a three-dimensional schematic diagram of the quick-replaceable field-effect transistor of this utility model. Figure 3 ;

[0016] Figure 4 A three-dimensional schematic diagram of a quick-replaceable field-effect transistor after removing the external packaging structure;

[0017] Figure 5 This is a cross-sectional view of the quick-change field-effect transistor of this utility model;

[0018] Figure 6 for Figure 5 A schematic diagram showing its integration with a circuit board.

[0019] The reference numerals in the attached diagram are as follows: MOSFET body 1, mounting hole 11, external package structure 2, pin 21, circuit board 3, hole 31, lead 4, deformable hole 41, and arc-shaped interference arm 42. Detailed Implementation

[0020] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-6 As shown, the quick-replaceable field-effect transistor of this invention includes a MOSFET body 1, which is encapsulated within an external encapsulation structure 2. The external encapsulation structure 2 also encapsulates three pins 4 extending beyond the bottom of the external encapsulation structure 1 and insertable into corresponding holes 31 on a circuit board 3. Each pin 4 is a variable-form crimp pin that can be directly inserted into the hole 31 and fixed to the inner wall of the hole 31. The external encapsulation structure 2 is made of plastic or ceramic.

[0022] The upper part of the MOS transistor body 1 extends beyond the top of the external packaging structure 2 and is provided with mounting holes 11.

[0023] The three pins 4 are arranged side by side, and the MOS transistor body 1 is integrally connected to the middle pin 4. The portion of the middle pin 4 and the MOS transistor body 1 extending beyond the top of the outer package structure 2 is the gate. One of the two pins 4 on the left and right sides is the source and the other is the drain. The bottom of the outer package structure 2 protrudes on both sides of each pin 4 to form a foot 21. Each pin 4 has a deformable hole 41, and the two sides of the deformable hole 41 are arc-shaped interference arms 42. The lower ends of the two arc-shaped interference arms 42 are connected, and the upper ends of the two arc-shaped interference arms 42 are connected, with the convex arc surfaces of the two arc-shaped interference arms 42 facing opposite directions.

[0024] Compared with the prior art, the main advantages of this utility model are: by designing the pin 4 as a variable crimping pin that can be directly inserted into the hole 31 and interfered with and fixed to the inner wall of the hole 31, when repairing or replacing, it is only necessary to use a tool to pull the pin 4 of the component (field effect transistor) out of the hole 31 of the circuit board 3 and insert the new component. The operation is simple and quick.

[0025] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A quick-replaceable field-effect transistor, comprising a MOSFET body, the MOSFET body being encapsulated within an external package structure, the external package structure further encapsulating three pins extending beyond the bottom of the external package structure and capable of being inserted into corresponding holes on a circuit board, characterized in that: Each of the aforementioned pins is a variable-form crimp pin that can be directly inserted into the hole and fixed to the inner wall of the hole.

2. The quick-replaceable field-effect transistor according to claim 1, characterized in that: The upper part of the MOS transistor body extends beyond the top of the external packaging structure and is provided with mounting holes.

3. The quick-replaceable field-effect transistor according to claim 2, characterized in that: The three pins are arranged side by side, and the MOS transistor body is integrally connected to the middle pin.

4. The quick-replaceable field-effect transistor according to claim 3, characterized in that: The pin located in the middle and the part of the MOS transistor body extending outside the top of the external package structure are the gate, and one of the two pins located on the left and right sides is the source and the other is the drain.

5. The quick-replaceable field-effect transistor according to claim 3, characterized in that: Each pin has a deformable hole, and the two sides of the deformable hole are arc-shaped interference arms. The lower ends of the two arc-shaped interference arms are connected, the upper ends of the two arc-shaped interference arms are connected, and the convex arc surfaces of the two arc-shaped interference arms face opposite directions.

6. The quick-replaceable field-effect transistor according to claim 3, characterized in that: The bottom of the external package structure protrudes on both sides of each pin to form a foot.

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