SOT-89 clamp seat

Abstract

The utility model discloses an SOT-89 clamp base which comprises a clamp base body, a clamp cover plate is rotationally connected to the clamp base body, an ejector pin is arranged on the clamp base body, the end portion of the contact end of the ejector pin is opposite to one side of the clamp cover plate, and a cooling fin is arranged on one side, close to the clamp base, of the clamp cover plate. The SOT-89 is placed on the placing groove, so that the SOT-89 is in contact with the arc-shaped surface of the ejector pin, meanwhile, the clamp cover plate is rotated, so that the SOT-89 is stably fixed on the clamp base by the clamp cover plate, the SOT-89 is conveniently tested and aged on the clamp base, and meanwhile, the SOT-89 is cooled by the cooling fins, so that the SOT-89 is prevented from being damaged in the testing and aging process of the SOT-89. The contact end of the SOT-89 pin is not scratched by the end portion of the ejector pin, indentation of the SOT-89 is prevented, meanwhile, heat dissipation of the SOT-89 is achieved, damage to the SOT-89 is reduced, and the finished product turnover rate of the SOT-89 is increased.

Description

Technical Field

[0001] The utility model relates to the field of testing SOT-89 plastic-packaged devices, in particular to an SOT-89 fixture base. Background Art

[0002] During the testing and burn-in process of SOT-89 plastic-packaged devices, a fixture base is required to load the devices for testing and burn-in. However, when the thimble in the self-owned fixture base contacts the SOT-89, indentations are likely to be generated on the device leads, and during the testing and burn-in process, the heat dissipation effect of the fixture base on the device is not good. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an SOT-89 fixture base.

[0004] The utility model is achieved through the following technical solutions.

[0005] An SOT-89 fixture base provided by the utility model includes a fixture base, a fixture cover is rotatably connected to the fixture base, a thimble is arranged on the fixture base, the end of the contact end of the thimble faces away from the side of the fixture cover, and heat sinks are arranged on the side of the fixture cover close to the fixture base.

[0006] Preferably, a plurality of placement grooves are formed on the fixture base, the plurality of placement grooves are evenly divided into two groups, the two groups of placement grooves are arranged oppositely, a placement hole is formed between the two groups of placement grooves opposite to each other, a thimble is arranged in each placement groove, and the end of the thimble away from the placement groove is placed in the placement hole.

[0007] Preferably, the end of the thimble close to the placement hole is set in an "L" shape. The vertical part of the thimble penetrates out of the placement groove, and the horizontal part of the thimble extends into the placement hole.

[0008] Preferably, a heat dissipation plate is arranged on the side of the fixture cover facing away from the fixture base.

[0009] Preferably, the fixture cover is made of high-temperature resistant plastic material.

[0010] Preferably, the heat sink is made of aluminum material.

[0011] Preferably, a convenient plate is connected to the fixture cover, and the convenient plate is arranged on the side of the fixture cover facing away from the fixture base.

[0012] Preferably, the end of the horizontal part of the thimble close to the placement hole is arc-shaped, and the end of the thimble faces away from the fixture cover.

[0013] The beneficial effects of the present utility model are as follows: Place the SOT-89 on the placement groove so that the SOT-89 is in contact with the arc surface of the thimble. At the same time, rotate the fixture cover plate so that the fixture cover plate fixes the SOT-89 firmly on the fixture base, facilitating the testing and aging of the SOT-89 on the fixture base. Meanwhile, the heat sink also dissipates heat from the SOT-89, so that during the testing and aging process of the SOT-89, the contact end of the SOT-89 pins will not be scratched by the end of the thimble, preventing indentation on the SOT-89. At the same time, heat dissipation of the SOT-89 is also achieved, reducing damage to the SOT-89 and increasing the finished product yield rate of the SOT-89. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a partial schematic structural diagram of the present utility model mainly for showing the thimble;

[0016] In the figure: 1-fixture base; 2-fixture cover plate; 3-thimble; 4-heat sink; 5-placement groove; 6-placement hole; 7-heat dissipation plate; 8-convenient plate. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0019] In the embodiments of the present application, referring to Figure 1 , it includes a fixture base 1. One side of the fixture base 1 is rotatably connected with a rotating bearing, and a fixture cover plate 2 is fixedly connected to the rotating bearing. The fixture cover plate 2 is made of high-temperature resistant plastic material. A convenient plate 8 is integrally connected to the fixture cover plate 2. The convenient plate 8 is arranged on the side of the fixture cover plate 2 facing away from the fixture base 1. The convenient plate 8 is perpendicular to the fixture cover plate 2, facilitating the worker to pull the fixture cover plate 2 to rotate so that the fixture cover plate 2 is separated from or closed with the fixture base 1. A heat dissipation plate 7 is arranged on the side of the fixture cover plate 2 facing away from the fixture base 1. The heat dissipation plate 7 is made of aluminum material, which helps to dissipate heat from the fixture cover plate 2.

[0020] In the embodiment of the present application, with reference to Figure 1 and Figure 2 , a plurality of placement grooves 5 are formed on the fixture base 1. The plurality of placement grooves 5 are evenly divided into two groups, with three placement grooves 5 in each group. The two groups of placement grooves 5 are arranged oppositely. A placement hole 6 is formed between the two groups of placement grooves 5 that face each other. A thimble 3 is arranged in each placement groove 5. The end of the contact end of the thimble 3 is far from the placement groove 5 and is placed in the placement hole 6. One end of the thimble 3 close to the placement hole 6 is set in an "L" shape. The vertical portion of the thimble 3 penetrates out of the placement groove 5 and faces away from the fixture base 1. The horizontal portion of the thimble 3 is placed in the placement groove 5. One end of the horizontal portion of the thimble 3 away from the vertical portion is arc-shaped, and the end of the horizontal portion of the thimble 3 faces away from the fixture cover plate 2.

[0021] When the SOT-89 is placed between the placement groove 5 and the placement hole 6, the pin of the contact end of the SOT-89 contacts the arc of the thimble 3, so that the SOT-89 does not directly contact the end of the thimble 3, and damage to the pins of the SOT-89 is avoided as much as possible.

[0022] In the embodiment of the present application, with reference to Figure 1 , a heat sink 4 is arranged on one side of the fixture cover plate 2 close to the fixture base 1. The heat sink 4 is made of aluminum material. When the fixture base 1 and the fixture cover plate 2 are combined, the SOT-89 is fixed on the fixture base 1. During the testing and aging of the SOT-89, heat is easily generated. The heat generated by the SOT-89 is dissipated to a certain extent through the heat sink 4, further protecting the SOT-89.

[0023] The working principle of this embodiment is as follows: Place the SOT-89 between the placement groove 5 and the placement hole 6 so that the SOT-89 contacts the arc portion of the thimble 3. At the same time, rotate the rotating bearing so that the fixture cover plate 2 is laid on the fixture base 1, fixing the SOT-89 firmly on the fixture base 1, facilitating the testing and aging of the SOT-89 on the fixture base 1. At the same time, the heat sink 4 and the heat dissipation block dissipate heat from the SOT-89 at the same time, so that during the testing and aging of the SOT-89, the contact end of the pins of the SOT-89 will not be scratched by the end of the thimble 3, preventing indentation on the SOT-89. At the same time, heat dissipation of the SOT-89 is also achieved, reducing damage to the SOT-89 and improving the yield rate of the SOT-89.

[0024] The above is only the preferred embodiment of the present invention, and does not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A SOT-89 fixture seat, characterized in that: The clamp base (1) comprises a clamp cover (2) rotatably connected to the clamp base (1), a pin (3) is arranged on the clamp base (1), the end of the contact end of the pin (3) faces away from the clamp cover (2), and a heat sink (4) is arranged on the side of the clamp cover (2) close to the clamp base (1).

2. A SOT-89 fixture seat as claimed in claim 1, characterized in that: The clamp base (1) is provided with a plurality of placement grooves (5), the plurality of placement grooves (5) are evenly divided into two groups, the two groups of placement grooves (5) are arranged opposite to each other, a placement hole (6) is provided between the two groups of placement grooves (5), each of the placement grooves (5) is provided with an ejector pin (3), and one end of the ejector pin (3) away from the placement groove (5) is placed in the placement hole (6).

3. A SOT-89 fixture seat as claimed in claim 2, characterized in that: One end of the ejector pin (3) close to the placement hole (6) is arranged in an "L" shape, the vertical portion of the ejector pin (3) passes through the placement groove (5), and the horizontal portion of the ejector pin (3) extends into the placement hole (6).

4. A SOT-89 fixture seat as claimed in claim 1, characterized in that: A heat dissipation plate (7) is provided on the side of the clamp cover plate (2) facing away from the clamp base (1).

5. A SOT-89 fixture seat as claimed in claim 1, characterized in that: The clamp cover plate (2) is made of high temperature resistant plastic material.

6. A SOT-89 fixture seat as claimed in claim 1, characterized in that: The heat sink (4) is made of aluminum.

7. A SOT-89 fixture base as claimed in claim 1, characterized in that: A convenient plate (8) is connected to the clamp cover plate (2), and the convenient plate (8) is arranged on a side of the clamp cover plate (2) facing away from the clamp base (1).

8. A SOT-89 fixture seat as claimed in claim 2, characterized in that: The end of the horizontal portion of the ejector pin (3) close to the placement hole (6) is in an arc shape, and the end of the ejector pin (3) faces away from the fixture cover plate (2).

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