Electrostatic discharge sensitivity test tool clamp

Abstract

The utility model relates to the technical field of electrostatic test tools, in particular to an electrostatic discharge sensitivity test tool clamp, which comprises a PCB (printed circuit board) main board, a test seat is arranged in the center of the top of the PCB main board, a plurality of control switches are distributed on two sides of the PCB main board, and an electrode A and an electrode B are arranged at one end of the PCB main board; each pin of the test seat is electrically connected with the A electrode or the B electrode through the control switch. According to the utility model, the tedious wiring process is simplified through the tool, and all test steps are completed through shifting different gears of the control switch, so that the efficiency of test work is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrostatic test frock technical field, concretely relates to a kind of electrostatic discharge sensitivity test frock clamps. BACKGROUND

[0002] Semiconductor components are always facing the reliability problem caused by electrostatic discharge, and with the development of super large scale integrated circuit, high power MOS circuit, microwave radio frequency circuit, the device becomes more sensitive to static electricity due to design, process and other problems. In most cases, the device failure caused by static electricity is potentially and slowly, and the initial performance changes slightly, but the ability of the device to resist overvoltage is weakened, which poses a risk during the operation of the circuit and significantly shortens the service life. Therefore, after the production of components, or before use, the anti-static ability of the components needs to be graded, and the components are stored and used according to the grading results.

[0003] The function of the electrostatic discharge sensitivity test frock clamp is to transmit the current waveform emitted by the electrostatic discharge equipment to the lead-out end of the component according to the standard specified combination. The electrostatic discharge sensitivity grading requires that all lead-out ends of the device be combined, connected to the A end of the electrostatic discharge equipment in turn, and the same name lead-out end be connected to the B end. The electrostatic discharge equipment only has two discharge ports (i.e. A end and B end), while the number of lead-out ends of the component is much larger than two. The existing equipment cannot meet the test requirements of simultaneous lead-out end combination, so the test efficiency is low. In order to meet the requirements of the standard, a frock clamp must be designed to realize the electrostatic discharge sensitivity test. SUMMARY

[0004] The utility model provides a kind of electrostatic discharge sensitivity test frock clamp, the frock simplifies the cumbersome wiring process, and all test steps are completed by dialing different gears of control switch, so the efficiency of test work is greatly improved.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a kind of electrostatic discharge sensitivity test frock clamp, comprising: PCB mainboard, the top center of the PCB mainboard is provided with test seat, and a plurality of control switches are distributed on both sides, one end of the PCB mainboard is provided with A electrode and B electrode;Each pin of the test seat is electrically connected with the A electrode or the B electrode through the control switch.

[0006] The control switch is a single-pole three-position dial lever switch with lock, and the central electrode of each control switch is electrically connected with the corresponding pin of the test seat through printed line, and the first contact electrode and the second contact electrode on both sides are electrically connected with the corresponding A electrode and B electrode respectively.

[0007] The top of the PCB main plate is covered with an upper copper foil, and the A electrode and the first contact electrode are electrically connected with the upper copper foil; the bottom of the PCB main plate is covered with a lower copper foil, and the B electrode and the second contact electrode are electrically connected with the lower copper foil.

[0008] A plurality of support columns are vertically connected around the bottom of the PCB main plate.

[0009] The utility model discloses beneficial effect lies in: when carrying out electrostatic discharge sensitivity test, the element to be measured is fixed on the test seat, then A electrode and B electrode are connected to the A end and B end of electrostatic discharge equipment respectively, finally through the different control switch of stirring to complete the electrostatic sensitivity test of the pin of the element to be measured, thereby obtaining the grading result. Compared with the traditional test equipment, the tool simplifies the cumbersome wiring process, and all test steps are completed by stirring the different gears of the control switch, therefore the efficiency of test work is greatly improved. The upper copper foil and the lower copper foil are connected with the A end and B end of the electrostatic discharge equipment respectively, in the test process, the test personnel selects the intercommunication of each pin and corresponding A electrode or B electrode through the control switch, thereby realizing the electrostatic discharge sensitivity test of the element to be measured. The support column can effectively support the PCB main plate, and is isolated with the test table, the PCB main plate bottom and the metal foreign matter contact short circuit, thereby improving the test stability. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0011] Figure 1 It is the top structure schematic diagram of the PCB main plate of the utility model;

[0012] Figure 2 It is the top wiring diagram of the PCB main plate of the utility model;

[0013] Figure 3 It is the bottom structure schematic diagram of the PCB main plate of the utility model.

[0014] In the drawing: 1, PCB main plate;2, test seat;3, control switch;4, A electrode;5, B electrode;6, pin;7, printing line;8, central electrode;9, first contact electrode;10, second contact electrode;11, upper copper foil;12, lower copper foil;13, support column. DETAILED DESCRIPTION

[0015] The technical scheme of the utility model will be described clearly and completely in combination with the drawings of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] According to Figure 1 、 Figure 2 、 Figure 3 As shown in FIG. 1, a static discharge sensitivity test tool clamp includes: a PCB mainboard 1, a test seat 2 is arranged at the top center of the PCB mainboard 1, a plurality of control switches 3 are distributed on both sides of the test seat 2, and an A electrode 4 and a B electrode 5 are arranged at one end of the PCB mainboard 1; and each pin 6 of the test seat 2 is electrically connected with the A electrode 4 or the B electrode 5 through the control switch 3.

[0017] Through the above arrangement, when the static discharge sensitivity test is performed, the to-be-tested element is fixed on the test seat 2, then the A electrode 4 and the B electrode 5 are connected to the A end and the B end of the static discharge equipment respectively, and finally the static sensitivity test of each pin 6 of the to-be-tested element is completed by turning different control switches 3, so that the grading result is obtained. Compared with the traditional test equipment, the tool simplifies the cumbersome wiring process, and all test steps are completed by turning different gears of the control switch 3, so that the efficiency of the test work is greatly improved.

[0018] The control switch 3 is a single-pole three-position dial lever switch with a lock, the central electrode 8 of each control switch 3 is electrically connected with the corresponding pin 6 of the test seat 2 through the printed wire 7, and the first contact electrode 9 and the second contact electrode 10 on both sides are respectively electrically connected with the corresponding A electrode 4 and B electrode 5.

[0019] The top of the PCB mainboard 1 is covered with an upper copper foil 11, the A electrode 4 and the first contact electrode 9 are electrically connected with the upper copper foil 11, the bottom of the PCB mainboard 1 is covered with a lower copper foil 12, and the B electrode 5 and the second contact electrode 10 are electrically connected with the lower copper foil 12.

[0020] Through the arrangement, the upper copper foil 11 and the lower copper foil 12 are respectively connected with the A end and the B end of the static discharge equipment, in the test process, the tester selects the communication of each pin 6 with the corresponding A electrode 4 or B electrode 5 through the control switch 3, so that the static discharge sensitivity test of the to-be-tested element is realized.

[0021] A plurality of support columns 13 are vertically connected to the periphery of the bottom of the PCB mainboard 1.

[0022] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electrostatic discharge sensitivity test tooling fixture, characterized by, Include: PCB mainboard (1), the top of the PCB mainboard (1) is provided with test seat (2), both sides are distributed with a plurality of control switch (3), one end of the PCB mainboard (1) is provided with A electrode (4) and B electrode (5); Each pin (6) of the test seat (2) is respectively connected with the A electrode (4) or the B electrode (5) through the control switch.

2. The electrostatic discharge sensitivity test fixture of claim 1, wherein: The control switch (3) is a single pole three position dial rod switch with lock, and the central electrode (8) of each control switch (3) is connected with the corresponding pin (6) of the test seat (2) through the printed line (7), and the first contact electrode (9) and the second contact electrode (10) on both sides are respectively connected with the corresponding A electrode (4) and B electrode (5).

3. The electrostatic discharge sensitivity test fixture of claim 2, wherein: The top of the PCB mainboard (1) is covered with upper copper foil (11), and the A electrode (4) and the first contact electrode (9) are connected with the upper copper foil (11); the bottom of the PCB mainboard (1) is covered with lower copper foil (12), and the B electrode (5) and the second contact electrode (10) are connected with the lower copper foil (12).

4. The electrostatic discharge sensitivity test fixture of claim 1, wherein: A plurality of support columns (13) are respectively connected vertically around the bottom of the PCB mainboard (1).

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