Unidirectional low-capacitance TVS diode

Abstract

The utility model discloses a unidirectional low-capacitance TVS diode, comprising a diode, the outer end of the diode is sleeved with a protective housing 1 and a protective housing 2, the outer walls of the protective housing 1 and the protective housing 2 are respectively and fixedly provided with a second clamping seat and a first clamping seat, and the second clamping seat and the first clamping seat are clamped by a clamping tongue. According to the unidirectional low-capacitance TVS diode provided by the utility model, the protection shell I and the protection shell II are sleeved at the outer end of the diode and are used for protecting the diode from external interference and damage so as to play a role in protection, the clamping connection of the protection shell I and the protection shell II is convenient for installation, and the clamping tongue is pressed to enter the slot during disassembly so as to be pulled out to finish disassembly. And the operation is simple, and a preliminary positioning function can be achieved through the insertion connection between the guide rod and the guide groove.

Description

Technical Field

[0001] The utility model relates to the technical field of diodes, in particular to a unidirectional low-capacitance TVS diode. Background Art

[0002] With the rapid development of semiconductor technology, the key size of integrated circuits is getting smaller and smaller, and the operating voltage is getting lower and lower. However, there are always unpredictable surges and electrostatic discharge (ESD) on the whole machine. If the corresponding protection is not done, it will cause devastating damage to the chip. Therefore, TVS (Transient Voltage Suppression System) is used to protect the chip from damage.

[0003] Protection devices represented by transient voltage suppressors (TVSs) are widely used in surge and ESD terminals of products.

[0004] However, the existing unidirectional low-capacitance TVS diode is small in size and relatively fragile during installation, and is easily damaged by external interference. The pins at both ends are also easily deformed, causing the tube body to be damaged and fail. Utility Model Content

[0005] The main purpose of the utility model is to provide a unidirectional low-capacitance TVS diode, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A unidirectional low-capacitance TVS diode comprises a diode, wherein the outer end sleeve of the diode is provided with a protective shell 1 and a protective shell 2, the outer walls of the protective shell 1 and the protective shell 2 are respectively fixedly mounted with a second clamping seat and a first clamping seat, and the second clamping seat and the first clamping seat are clamped with tongues.

[0008] Preferably, the latch tongue is fixedly mounted on an outer wall of one side of the second card seat, a slot matching with the latch tongue is provided on one side wall of the first card seat, and a latch groove penetrating with the slot is provided on the top of the first card seat.

[0009] Preferably, a guide groove is provided on the other end of one side wall of the second protective shell opposite to the first clamping seat, and a guide rod engaged with the guide groove is integrally injection-molded on one side wall of the first protective shell.

[0010] Preferably, a locking seat is provided on one side wall of the protective shell 1 and the protective shell 2, and the locking seat is sleeved on the outside of the pin on the diode.

[0011] Preferably, a threaded seat is provided on the locking seat, and three groups of locking grooves are equidistantly provided on the threaded seat.

[0012] Preferably, a locking head is threadedly connected to the outer side of the locking groove, and a threaded groove matching the threaded seat is formed on the inner wall of the locking head.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by arranging the protective shell 1 and the protective shell 2 on the outer end sleeve of the diode to protect the diode from external interference and damage, the protective effect is played, and the two are arranged to be connected to facilitate installation, and when disassembling, the tongue is pressed into the slot to be pulled out to complete the disassembly, and the operation is simple, and the insertion between the guide rod and the guide groove can play a preliminary positioning function;

[0014] The provided locking head can drive the threaded seat to shrink and wrap around the outside of the pin through rotation, so as to protect the roots of the pins at both ends of the diode and prevent the roots from being deformed and damaged due to force. The provided locking groove is used for the threaded seat to be locked by the locking head, and it can provide space for the threaded seat to shrink and deform toward the pin side of the diode, thereby achieving the purpose of wrapping and protecting the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a unidirectional low-capacitance TVS diode of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of a unidirectional low-capacitance TVS diode of the utility model;

[0017] Figure 3 This is an enlarged schematic diagram of a protective shell of a unidirectional low-capacitance TVS diode of the utility model;

[0018] Figure 4 The utility model is a three-dimensional structural schematic diagram of a unidirectional low-capacitance TVS diode.

[0019] In the figure: 1. diode; 2. protective shell 1; 3. locking head; 4. protective shell 2; 5. first card seat; 6. second card seat; 7. card slot; 8. card tongue; 9. slot; 10. locking seat; 11. guide groove; 12. guide rod; 13. threaded seat; 14. threaded groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-4As shown, a unidirectional low-capacitance TVS diode includes a diode 1, and a protective shell 1 2 and a protective shell 2 4 are provided on the outer end sleeve of the diode 1. The outer walls of the protective shell 1 2 and the protective shell 2 4 are respectively fixedly installed with a second clamping seat 6 and a first clamping seat 5, and the second clamping seat 6 and the first clamping seat 5 are clamped with a clamping tongue 8. The protective shell 1 2 and the protective shell 2 4 are provided on the outer end sleeve of the diode 1 to protect the diode 1 from external interference and damage, thereby playing a protective role, and the clamping arrangement of the two facilitates installation and disassembly.

[0022] In this embodiment, the tongue 8 is fixedly installed on the outer wall of one side of the second card seat 6, a slot 9 matching with it is opened on one side wall of the first card seat 5, and a card slot 7 penetrating with the slot 9 is opened on the top of the first card seat 5.

[0023] Specifically, during installation, the fixing is completed by inserting the latch tongue 8 on the second latch holder 6 into the latch slot 7 on the first latch holder 5. During disassembly, the latch tongue 8 is pressed into the slot 9 and can be pulled out to complete the disassembly. The operation is simple.

[0024] In this embodiment, a guide groove 11 is formed on the other end of one side wall of the second protective shell 4 opposite to the first clamping seat 5 , and a guide rod 12 engaged with the guide groove 11 is integrally injection-molded on one side wall of the first protective shell 2 .

[0025] Specifically, when the protective shell 1 2 and the protective shell 2 4 are fixedly connected, the insertion between the guide rod 12 and the guide groove 11 can play a preliminary positioning function.

[0026] In this embodiment, a locking seat 10 is disposed on one side wall of the protective shell 1 2 and the protective shell 2 4 , and the locking seat 10 is sleeved on the outer side of the pin on the diode 1 .

[0027] Specifically, the locking seat 10 can protect the roots of the pins at both ends of the diode 1 to prevent the roots from being deformed and damaged due to stress.

[0028] In this embodiment, a threaded seat 13 is disposed on the locking seat 10 , and three sets of locking grooves are equidistantly formed on the threaded seat 13 .

[0029] Specifically, the locking groove is used for the threaded seat 13 to provide space for the threaded seat 13 to shrink and deform toward the pin side of the diode 1 when the threaded seat 13 is locked by the locking head 3, thereby achieving the purpose of wrapping and protecting the pin.

[0030] In this embodiment, the locking head 3 is threadedly connected to the outer side of the locking groove, and a thread groove 14 matching the thread seat 13 is formed on the inner wall of the locking head 3 .

[0031] Specifically, the locking head 3 can be rotated to drive the threaded seat 13 to shrink and wrap around the outside of the pin.

[0032] It should be noted that the utility model is a unidirectional low-capacitance TVS diode, which protects the diode 1 from external interference and damage by arranging a protective shell 1 2 and a protective shell 2 4 on the outer end sleeve of the diode 1, and plays a protective role. The two are arranged to be connected to each other for easy installation and disassembly. During installation, the fixing can be completed by inserting the tongue 8 on the second holder 6 into the slot 7 on the first holder 5. During disassembly, the tongue 8 can be pressed into the slot 9 and pulled out to complete the disassembly. The operation is simple. When the protective shell 1 2 and the protective shell 2 4 are fixedly connected, the insertion between the guide rod 12 and the guide groove 11 can play a preliminary positioning function. The locking head 3 can be rotated to drive the threaded seat 13 to shrink and wrap around the outside of the pin, so as to protect the roots of the pins at both ends of the diode 1 to avoid deformation and damage due to stress on the roots. The locking groove is used for the threaded seat 13 to be locked by the locking head 3, and it can provide space for the threaded seat 13 to shrink and deform toward the pin side of the diode 1, thereby playing the purpose of wrapping and protecting the pin.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A unidirectional low capacitance TVS diode, comprising a diode (1), characterized in that: The outer end sleeve of the diode (1) is provided with a protective shell 1 (2) and a protective shell 2 (4); the outer walls of the protective shell 1 (2) and the protective shell 2 (4) are respectively fixedly mounted with a second clamping seat (6) and a first clamping seat (5); the second clamping seat (6) and the first clamping seat (5) are clamped with a clamping tongue (8); a locking seat (10) is provided on one side wall of the protective shell 1 (2) and the protective shell 2 (4); the locking seat (10) is sleeved on the outer side of the pin on the diode (1); a threaded seat (13) is provided on the locking seat (10); and three groups of locking grooves are equidistantly provided on the threaded seat (13); a locking head (3) is threadedly connected to the outer side of the locking groove; and a threaded groove (14) matching the threaded seat (13) is provided on the inner wall of the locking head (3).

2. The unidirectional low capacitance TVS diode according to claim 1, characterized in that: The latch tongue (8) is fixedly mounted on an outer wall of one side of the second latch seat (6); a slot (9) matching the second latch tongue is provided on one side wall of the first latch seat (5); and a latch groove (7) penetrating the slot (9) is provided on the top of the first latch seat (5).

3. The unidirectional low capacitance TVS diode according to claim 2, characterized in that: A guide groove (11) is provided at the other end of a side wall of the second protective shell (4) opposite to the first clamping seat (5), and a guide rod (12) is integrally injection-molded on a side wall of the first protective shell (2) and is clamped with the guide groove (11).

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