CN208125876U - A triode Kelvin test component - Google Patents

Abstract

The utility model provides a Kelvin test component of a triode, which comprises a mounting seat, wherein the mounting seat comprises an input end and an output end, the input end comprises a first contact terminal, a second contact terminal, a third contact terminal, a fourth contact terminal, a fifth contact terminal and a sixth contact terminal which are arranged in sequence, the output end comprises a first output terminal, a second output terminal, a third output terminal, a fourth output terminal and a fifth output terminal which are arranged in sequence, the first contact terminal and the sixth contact terminal are arranged in a mirror image mode and each comprise a bending part A and a connecting part A, the second contact terminal and the fifth contact terminal are arranged in a mirror image mode and each comprise a bending part B and a connecting part B, the length of the bending part A is greater than that of the bending part B, and the length of the connecting part A is greater than that of the connecting part B. When the test assembly is used for testing the triode, the pin of the triode is in good contact with the triode, the operation is simple, and the test efficiency is high.

Description

A triode Kelvin test component

technical field

The utility model relates to the field of triode testing, in particular to a triode Kelvin testing assembly.

Background technique

For the test of positive and negative voltage drop or on-state resistance of power device chips, in order to improve the accuracy of the test, the Kelvin test method is usually used. The Kelvin test is commonly referred to as the four-wire test method. The purpose of the four-wire test method is to deduct the voltage drop caused by the wire resistance. Generally, the equivalent resistance of a 30-centimeter-long wire is about ten milliohms to hundreds of milliohms. If the current passing through the wire is large enough (such as an ampere level), the voltage drop at both ends of the wire will reach tens to hundreds of millivolts.

At present, the equipment of the Kelvin test method generally has four test probes, and the test probes are connected to the two ends of the electronic component under test. Impedance measurement. Using this test method, internal impedances such as cable impedance and contact impedance can be ignored, so the test accuracy can be improved.

The existing test method is generally to make the probe into a clip-shaped test clip, and the test clip contacts the contact pin of the electronic component to be tested, so as to perform the test. However, for small components such as diodes and triodes, the test needs to be fixed. Location, difficult operation, low test efficiency.

Utility model content

Aiming at the above problems, the utility model provides a Kelvin test assembly suitable for triodes. Using the test assembly to test the triodes, the pins of the triodes are in good contact with them, and the test operation is simple and the test efficiency is high.

In order to achieve the above object, the utility model is solved through the following technical solutions:

A triode Kelvin test assembly, comprising a mount, the mount includes an input end and an output end, the input end includes a first contact terminal, a second contact terminal, a third contact terminal, a fourth contact terminal, The fifth contact terminal and the sixth contact terminal, the output terminal includes a first output terminal, a second output terminal, a third output terminal, a fourth output terminal, and a fifth output terminal arranged in sequence, and the first contact terminal and The first output terminal is connected, the second contact terminal is connected to the second output terminal, the third contact terminal and the fourth contact terminal are both connected to the third output terminal, and the fifth The contact terminal is connected to the fourth output terminal, the sixth contact terminal is connected to the fifth output terminal, the first contact terminal and the sixth contact terminal are mirror images and both include a bent portion A and a connection part A, the second contact terminal and the fifth contact terminal are mirror images and both include a bent part B and a connecting part B, the length of the bent part A is greater than the length of the bent part B, the The length of the connection part A is greater than the length of the connection part B.

Specifically, between the first contact terminal and the second contact terminal, between the second contact terminal and the third contact terminal, between the third contact terminal and the fourth contact terminal . Between the fourth contact terminal and the fifth contact terminal, and between the fifth contact terminal and the sixth contact terminal, an insulating spacer is interposed.

Specifically, the sixth contact terminal is further provided with a locking block on the side away from the fifth contact terminal, the mounting seat is screwed to the locking block, and the mounting seat is connected to the locking block. A positioning column is also provided, and the positioning column passes through the input end and the insulating partition to fix the input end between the mounting seat and the locking block.

Specifically, the insulating partition is further provided between the sixth contact terminal and the locking block.

Specifically, the distance between the third contact terminal and the fourth contact terminal is d, where d≤0.38mm.

The beneficial effects of the utility model are:

First, the Kelvin test assembly of the present utility model is suitable for testing the electrical properties of the triode. During the test, the middle pin of the triode is sandwiched between the third contact terminal and the fourth contact terminal. Those who are in good contact can avoid test errors caused by poor contact, and then only need to press the first contact terminal, the second contact terminal, the fifth contact terminal and the sixth contact terminal to make them contact with the other two pins to complete Test, simple operation, high test efficiency;

Second, the first contact terminal and the second contact terminal, the fifth contact terminal and the sixth contact terminal are designed in a dislocation structure, which is convenient for testing and effectively avoids affecting the test structure due to mutual contact;

Third, since the standard size of the pins of the triode is 0.38 mm, setting the distance between the third contact terminal and the fourth contact terminal to be less than or equal to 0.38 mm can make the pins of the triode more firmly placed in the test assembly.

Description of drawings

Fig. 1 is a front view of a triode Kelvin test assembly of the present invention.

Fig. 2 is a right view of a triode Kelvin test assembly of the present invention.

Fig. 3 is a left view of a triode Kelvin test assembly of the present invention.

Fig. 4 is a schematic diagram of the internal structure of a triode Kelvin test assembly of the present invention.

Fig. 5 is a front view of a triode Kelvin test assembly of the present invention when it is inserted into the triode for testing.

Reference numerals are: mounting seat 1, input terminal 11, first contact terminal 111, second contact terminal 112, third contact terminal 113, fourth contact terminal 114, fifth contact terminal 115, sixth contact terminal 116, output Terminal 12, first output terminal 121, second output terminal 122, third output terminal 123, fourth output terminal 124, fifth output terminal 125, bent portion A101, connecting portion A102, bent portion B103, connecting portion B104 , an insulating partition 13, a locking block 14, a positioning column 15, a triode 2, a first pin 21, a second pin 22, and a third pin 23.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

As shown in Figure 1-5:

A triode Kelvin test assembly, comprising a mount 1, the mount 1 includes an input end 11 and an output end 12, the input end 11 includes a first contact terminal 111, a second contact terminal 112, a third contact terminal 113, a first Four contact terminals 114, the fifth contact terminal 115, the sixth contact terminal 116, the output terminal 12 includes the first output terminal 121, the second output terminal 122, the third output terminal 123, the fourth output terminal 124, the fifth output terminal 123 arranged in sequence. Output terminal 125, the first contact terminal 111 is connected to the first output terminal 121, the second contact terminal 112 is connected to the second output terminal 122, the third contact terminal 113 and the fourth contact terminal 114 are connected to the third output terminal 123, The fifth contact terminal 115 is connected to the fourth output terminal 124, the sixth contact terminal 116 is connected to the fifth output terminal 125, the first contact terminal 111 and the sixth contact terminal 116 are mirror images and both include a bent portion A101 and a connecting portion A102. , the second contact terminal 112 and the fifth contact terminal 125 are mirror images and both include a bent portion B103 and a connecting portion B104, the length of the bent portion A101 is greater than the length of the bent portion B103, and the length of the connecting portion A102 is greater than that of the connecting portion B104 length.

Preferably, between the first contact terminal 111 and the second contact terminal 112, between the second contact terminal 112 and the third contact terminal 113, between the third contact terminal 113 and the fourth contact terminal 114, between the fourth contact terminal 114 Between the fifth contact terminal 115 and between the fifth contact terminal 115 and the sixth contact terminal 116 are interposed insulating partitions 13 , the insulating partitions 13 separate each part and play an insulating effect.

Preferably, a locking block 14 is provided on the side away from the fifth contact terminal 115 of the sixth contact terminal 116, the mounting seat 1 is screwed to the locking block 14, and a positioning column is also provided between the mounting seat 1 and the locking block 14 15 , the positioning column 15 passes through the input end 11 and the insulating partition 13 to fix the input end 11 between the mounting base 1 and the locking block 14 .

Preferably, an insulating partition 13 is further provided between the sixth contact terminal 116 and the locking block 14 .

Preferably, the distance between the third contact terminal 113 and the fourth contact terminal 114 is d, d≤0.38mm, and the lower side of the triode 2 is provided with a first pin 21, a second pin 22, and a third pin 23 in sequence, because The standard size of the second pin 22 of the triode 2 is 0.38mm, and the distance between the third contact terminal 113 and the fourth contact terminal 114 is set to be less than or equal to 0.38mm, which can make the second pin 22 of the triode 22 more firmly. placed inside the test component.

The specific test operation is as follows:

The second pin 22 is sandwiched between the third contact terminal 113 and the fourth contact terminal 114. At this time, the first pin 21 is located between the second contact terminal 112 and the third contact terminal 113, and the third pin 23 is located between the fourth contact terminal 114 and the fifth contact terminal 115, press the second contact terminal 112 and the third contact terminal 113, make the bending part A101 and the bending part B103 contact with the first pin 21, press the second contact terminal 112 The fifth contact terminal 115 and the sixth contact terminal 116 make its bending portion A101 and bending portion B103 contact the third pin 23, while the first output terminal 121, the second output terminal 122, and the third output terminal on the lower side 123, the fourth output terminal 124, and the fifth output terminal 125 can all be connected to a multimeter or other testing instruments, and the corresponding test can be completed by selecting the corresponding testing part and testing option through the testing instrument.

The above-mentioned embodiment only expresses one implementation mode of the present utility model, and its description is relatively specific and detailed, but it should not be understood as limiting the patent scope of the present utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (5)

1. a kind of triode Kelvin test suite, which is characterized in that including mounting base (1), the mounting base (1) includes input It holds (11) and output end (12), the input terminal (11) includes the first contact terminal (111), the second contact terminal set gradually (112), third contact terminal (113), the 4th contact terminal (114), the 5th contact terminal (115), the 6th contact terminal (116), the output end (12) includes that the first lead-out terminal (121) set gradually, second output terminal sub (122), third are defeated Terminal (123), the 4th output terminal (124), the 5th output terminal (125) out, first contact terminal (111) and described the One output terminal (121) connection, second contact terminal (112) connect with the second output terminal sub (122), the third Contact terminal (113), the 4th contact terminal (114) connect with the third output terminal (123), the 5th contact Terminal (115) is connect with the 4th output terminal (124), the 6th contact terminal (116) and the 5th output terminal (125) it connects, first contact terminal (111) is with the 6th contact terminal (116) mirror settings and including bending Portion A (101) and interconnecting piece A (102), second contact terminal (112) and the 5th contact terminal (115) mirror settings It and include bending part B (103) and interconnecting piece B (104), the length of the bending part A (101) is greater than the bending part B (103) length, the length of the interconnecting piece A (102) are greater than the length of the interconnecting piece B (104).

2. a kind of triode Kelvin test suite according to claim 1, which is characterized in that first contact terminal (111) between second contact terminal (112), second contact terminal (112) and the third contact terminal (113) Between, between the third contact terminal (113) and the 4th contact terminal (114), the 4th contact terminal (114) with Between 5th contact terminal (115), between the 5th contact terminal (115) and the 6th contact terminal (116) It is folded with insulating barrier (13).

3. a kind of triode Kelvin test suite according to claim 2, which is characterized in that the 6th contact terminal (116) it is additionally provided with latch segment (14) far from the 5th contact terminal (115) side, the mounting base (1) and the latch segment (14) it is threadedly coupled, is additionally provided between the mounting base (1) and the latch segment (14) positioning column (15), the positioning column (15) Across the input terminal (11) and the insulating barrier (13) by the input terminal (11) be fixed on the mounting base (1) with it is described Between latch segment (14).

4. a kind of triode Kelvin test suite according to claim 3, which is characterized in that the 6th contact terminal (116) it is additionally provided between the latch segment (14) insulating barrier (13).

5. a kind of triode Kelvin test suite according to claim 1, which is characterized in that the third contact terminal It (113) is d, d≤0.38mm with the spacing of the 4th contact terminal (114).