ICT Instrument Overview

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ICT Instrument Overview

In-Circuit-Tester is an automatic online tester. It is a test equipment for PCBA (Printed-Circuit Board Assembly), which is a must-have for modern electronics companies. It has a wide range of ICT and high measurement accuracy. The problem indication is clear, even if the average skilled worker handles the problematic PCBA. The use of ICT can greatly increase production efficiency and reduce production costs. 2. The ICT Test is mainly used to test the PCB open circuit, short circuit, and soldering of all parts. It can be divided into open circuit test, short circuit test, resistance test, capacitance test, diode test, and triode test. , FET test, IC pin test (testjet ` connect check) and other general and special components such as missing, mis-installed, parameter value deviation, solder joint welding, circuit board open circuit and other faults, and the fault is Which component or open-circuit is located at which point accurately tells the user. (Higher recognition ability for component soldering test) 3. ICT equipment manufacturers vary, the world's major ICT automatic test equipment manufacturers mainly include Agilent Technologies Agilent (USA), Teradyne Teradyne (USA), Check Sum (USA), AEROFLEX (USA), WINCHY Yingqi, Hioki (Japan), IFR (AEROFLEX M&A), Takaya (Japan), Tescon (Japan), Okano (Japan), System (Taiwan), JET (Jizhi), TRI (Delux), SRC Galaxy, ANSO (ANSO), Concord, Rohde & Schwarz, Scorpion, Shindenski, SPEA, Tecnost-MTI, Testronics, WK Test, Schuhll, Viper, PTI, etc. The test principles of different brands of ICT are the same or similar. Around the 1980s, Japan simplified and miniaturized similar products in the United States and changed it to a pneumatic press type. It represented Japan's TESCON and OKANO, making ICT easy to use and low-cost, making it an electronic factory. The necessary testing equipment is lacking and is rapidly popularized. In the 1980s, Taiwan became an important base for electronic foundry manufacturing from the source of electronic computer counterfeiting that caused Western headaches. In the late 1980s and early 1990s, Taiwan began to completely copy the TESCON tester and launched numerous brand presses. ICT, which is cheaper, forced Japan's TESCON, which had the world's first market share, to fade out of the market, and significantly increased its market share due to the development of Taiwan's electronics industry. Since the 1970s, similar static testers have been developed in China. In 1993, Chinese local brands led Japan, South Korea, Taiwan and Hong Kong to develop the first ICT version in Asia. Today, Teradyne and Agilent are still leading brands and become the de facto standard for such technologies!

Definitions Online testing, ICT, In-Circuit Test, is a standard test method for checking manufacturing defects and component defects by testing the electrical performance and electrical connections of online components. It mainly checks the single components of the line and the open and short circuit conditions of each circuit network, and has the characteristics of simple operation, fast and rapid, and accurate fault location. Is a component-level test method used to test each component on the assembled board

Flying probe ICT is basically only static test, the advantage is that no fixture is needed, and the program development time is short.

The needle bed type ICT can perform analog device functions and digital device logic function tests, and has high fault coverage. However, special needle bed clamps are required for each single board, and the fixture production and program development cycle is long.