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Method for testing micro-resistance library sheet resistance value of printed wiring board

A technology of printed circuit boards and testing methods, applied in the direction of measuring resistance/reactance/impedance, measuring devices, measuring electrical variables, etc., can solve the problems of reducing production efficiency, inconvenient data recording, inconvenient maintenance, etc., to achieve easy disassembly and cleaning and Maintenance, improvement of test efficiency, and production cost savings

Inactive Publication Date: 2013-03-13
DALIAN PACIFIC ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the micro-resistance test device used by our company is purchased from a professional manufacturer, the purchase cost is relatively high, it is easy to be damaged during use, and it is not easy to maintain
Moreover, it is difficult to record data by using both hands during the test, thus reducing production efficiency

Method used

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  • Method for testing micro-resistance library sheet resistance value of printed wiring board
  • Method for testing micro-resistance library sheet resistance value of printed wiring board
  • Method for testing micro-resistance library sheet resistance value of printed wiring board

Examples

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specific example

[0031] Specific examples are as follows: figure 1 It is a schematic diagram of the overall structure of the micro-resistance testing device of the present invention. The micro-resistance testing device described in the figure is composed of a test probe, a lead wire and a special plug for a micro-resistance tester, wherein a group of test probes consists of a casing 1, a printed board 2, a double-pole double-pole The throw switch 3, the spring test needle cover 4 and the spring test needle 5 are composed; the shell 1 is composed of two parts, the upper shell 1a and the lower shell 1b, both of which are made of plastic material and have good insulation; the printed board 2 is made of thickness It is made of 1.6mm high Tg copper clad laminate, the line width is 0.5mm, and the copper plating thickness is 10Z. It has good conductivity, rigidity and stability. As a carrier, the printed board 2 is fixed in the housing 1 by four M2 fixing screws 1c through the positioning holes 2a, a...

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Abstract

The invention discloses a method for testing a micro-resistance library sheet resistance value of a printed wiring board. The method is characterized by comprising the following steps of processing the printed wiring board before appearance milling, performing milling processing to a resistance value test library and testing micro-resistance. A micro-resistance testing device consists of a testing probe, a lead and a plug special for a micro-resistance tester, wherein the testing probe consists of a casing, a printed board, a double-pole double-throw switch, a spring testing needle sleeve and a spring testing needle. The casing of the micro-resistance testing device is made of a plastic material, and an upper casing and a lower casing are fixed through a screw and are fastened in structure, convenient to dismantle, clean and maintain, economic and environment-friendly. The micro-resistance testing device can be held by one hand and respectively performs resistance value testing to through hole micro-resistance and laser hole micro-resistance, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the improvement of the test method for the resistance value of the library square of the micro-resistance of the printed circuit board. Background technique [0002] Printed boards are assembled during the processing and manufacturing process. In order to ensure the electrical properties of the finished boards, before delivery to customers, micro-resistance tests need to be performed on the side of the board to test the production board base copper, copper plating, laser holes, through-holes, etc. Hole and line condition. When testing micro-resistance, the use of test equipment is essential. Now the micro-resistance testing device used by our company is purchased from a professional manufacturer. The purchase cost is relatively high, and it is easy to be damaged during use and difficult to maintain. Moreover, two hands are used for testing during the test, which is not convenient for recording data, thereby reducing productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/02
Inventor 王泽东赵占波马庭峰
Owner DALIAN PACIFIC ELECTRONICS
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