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Board-end ESD test tool and test method

A technology for testing fixtures and board ends, applied in electrostatic field measurement, etc., can solve problems such as easily damaged chips, and achieve the effect of improving overall quality and competitiveness

Inactive Publication Date: 2018-05-18
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the static electricity on the board end directly releases the static electricity to the circuit, and the circuit is connected to the chip, so even if we use the smallest static electricity level of the electrostatic gun, it is easy to damage the chip

Method used

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  • Board-end ESD test tool and test method
  • Board-end ESD test tool and test method

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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] The electrostatic generation at the board end is mainly concentrated on the external interfaces such as USB, VGA, LAN, and the board end connector of the key chip. Taking the USB2.0 interface as an example, USB2.0 has a power line, a ground line and a pair of signal lines. The ground wire is connected to the case and is tested during system-level electrostatic testing. Secondly, the static electricity on the board end is mostly generated at the connector on the board end.

[0030] The board end is mainly the test of power lines and signal lines. Whether it is an exter...

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Abstract

The invention particularly relates to a board-end ESD test tool and test method. The test tool comprises a test board made of a connecting wire as short as possible and an insulating material, whereinthe test board is connected to the board end through the connecting wire; the connecting wire is located on the front side of the test board, the back side of the test board is provided with a copperfoil layer; the copper foil layer is used as a ground plane; on the front side of the test board, the end of the connecting wire is connected with a disc solder joint; and a resistor is connected inparallel to the copper foil layer via the connecting wire. The board-end ESD test tool and test method solve a problem that a conventional electrostatic test tool and method cannot perform board-end electrostatic test verification, reduce the static risk of a product in production, maintenance and end customers, thereby enhancing overall quality and competitiveness of the product.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility, in particular to an ESD test fixture and a test method for board ends. Background technique [0002] Electro-Static Discharge (ESD for short) phenomenon is the most common cause of electronic equipment failure. The country has formulated a strict national standard IEC61000-4-2 for static electricity testing. At the same time, electrostatic testing is an important part of electromagnetic compatibility technology, which mainly studies the ability of IT equipment to resist electrostatic interference. However, the anti-static interference capability in the standard is based on the final customer, which means that the test standard simulates the static electricity that the final customer may generate during use. [0003] Therefore, first of all, in the industry, if the generation of static electricity does not appear in the use of end customers, it is not considered in the desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/12
CPCG01R29/12
Inventor 党杰
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD