The Function of ICT Automatic On line Tester in SMT Process

ICT, namely automatic online tester, is a standard test method to check manufacturing defects and defective components by testing the electrical performance and electrical connection of online components. It is a necessary testing equipment for PCBA (PRINTED - Circuit board assembly) production in modern electronic enterprises. ICT has a wide range of applications, high measurement accuracy, and clear instructions for detected problems. Even workers with ordinary electronic technology can easily handle problematic PCBA. Using ICT can greatly improve production efficiency and reduce production cost

ICT, namely automatic online tester, is a standard test method to check manufacturing defects and defective components by testing the electrical performance and electrical connection of online components. It is a necessary testing equipment for PCBA (PRINTED - CIRCUIT board assembly) production in modern electronic enterprises. ICT has a wide range of applications, high measurement accuracy, and clear instructions for detected problems. Even workers with ordinary electronic technology can easily handle problematic PCBA. The use of ICT can greatly improve production efficiency and reduce production costs.

ICT Test is mainly used to test the open circuit, short circuit and welding of all parts of the PCBA circuit by testing the test points from the PCB layout where the probe contacts. It can be divided into open circuit test, short circuit test, resistance test, capacitance test, diode test, triode test, FET test, IC pin test and other general and special components such as missing installation, wrong installation, parameter value deviation, solder joint welding If the circuit board is open or short circuited, tell the user exactly which component is the fault or where the open or short circuit is located. (High recognition ability for welding test of components)

It finds the defects of manufacturing process and components by directly testing the electrical performance of online devices. The component class can check out the out of tolerance, failure or damage of the component value, and the program error of the Memory class. For the process category, such faults as solder short circuit, wrong, wrong, missing component insertion, pin cocking, faulty soldering, PCB short circuit, broken wire, etc. can be found.

The tested fault is directly located on specifIC components, device pins and network points, and the fault location is accurate. No more professional knowLEDge is required for troubleshooting. The automatic test using program control is SIMple to operate and fast to test. The test time of a single board is usually from a few seconds to dozens of seconds.

Online testing is usually the first testing process in production, which can timely reflect the production and manufacturing conditions, and is conducive to process improvement and promotion. ICT tested fault boards can greatly improve production efficiency and reduce maintenance costs due to accurate fault location and convenient maintenance. Because of its specific test items, it is one of the important test methods for modern mass production quality assurance.

PCB manufacturers and PCB designers will explain the role of ICT automatic online tester in SMT manufacturing process.