Basic Knowledge of In-Circuit Testing: What is an In-Circuit Tester?
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To ensure that electronic devices function correctly, the electronic circuit board within the device must operate normally. The electronic circuit board can function when electronic components are properly mounted on the printed circuit board (substrate) and power is supplied. The inspection of the electronic circuit board in this state, where electronic components are mounted, is called in-circuit testing (ICT). An in-circuit tester is a testing device aimed at inspecting the connection reliability between electronic components and the substrate, as well as checking for component errors. By inspecting the constants of individual electronic components (such as resistors and capacitors) and diode characteristics with small electrical signals, the quality can be compared without placing additional load on the substrate itself. It is also referred to as MDA (Manufacturing Defect Analyzer). Main inspection contents: ● Solder shorts and opens ● Pattern disconnections ● Missing components ● Incorrect component values ● Reverse insertion of polarized components ● Lifted leads of ICs and connectors ● Operation confirmation of digital transistors, optocouplers, and Zener diodes ● Other simple function tests
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Takaya Corporation developed and sold the world's first "Flying Probe Tester" about 30 years ago and is still a leading company in the PCB inspection machine industry, boasting the top market share globally. If you are interested in flying probe-type in-circuit testers or are facing challenges with electrical testing of PCBs, please feel free to contact us.
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【Adopted Industries】 EMS, EMDS companies Semiconductor manufacturing equipment Communication infrastructure and servers Automotive, aircraft, and marine Medical devices Industrial machinery and robots FA machine tools Power generation and power systems 【Use Cases】 ■ Inspection of mass-produced items Connected to loaders/unloaders for automated/unmanned inspection even in large lots ■ Inspection of multi-variety small quantity substrates No need for dedicated fixture production costs; easy identification of defective areas ■ Inspection of prototype substrates Function tests responsive to design changes (applying voltage to the substrate to confirm circuit operation (ON/OFF) and measure direct current) ■ Implementation confirmation inspection during model switching Verification of the mounting program for the first lot and checking for setup errors during model changes ■ Defect analysis inspection Inspection of substrates that failed functional tests and defect analysis of substrates that failed in the market We have a track record of being utilized in various other applications as well. For more details, please contact your sales representative.
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Founded in 1894 as a textile company, Takaya Textile expanded and established its electronics division in 1966, beginning the assembly of transistor radios. Currently, in addition to contract manufacturing services (EMS) related to electronic devices, the company actively manufactures and sells in-circuit testers (printed circuit board inspection devices), RFID-related equipment (technology that enables information exchange through short-range wireless communication from IC information tags), and engages in IT consulting and system solutions, among various electronics businesses both domestically and internationally. We will continue to evolve as a corporate group that contributes to the development of society, with textiles and electronics as our two pillars.