The manufacturing process of SMT chip processing is very complex, each process is a ring with a ring, and the problem of that process will affect the quality of the product. In order to improve the welding quality of PCBA processing products, professional testing equipment needs to be set up in each process to strictly control the quality of the process.

1, SPI detection SPI, the solder paste thickness gauge, is generally placed behind the solder paste printing process, mainly used to detect the thickness, area, volume distribution of the solder paste on the PCB board, is an important equipment to monitor the solder paste printing quality.

2, AOI detection AOI is an automatic optical detector, which can be placed in various positions of the production line, but it is generally placed behind the reflow welding process to detect the welding quality of the PCB board after reflow welding, and timely find defects such as less tin, less material, virtual welding, and tin.

Explain the importance of AOI testing equipment for SMT patch processing:

When automatic detection, the machine automatically scans the PCB through the camera, collects images, compares the tested solder joints with qualified parameters in the database, checks the defects on the PCB through image processing, and displays/marks the defects through the display or automatic signs for SMT process engineers to improve and SMT maintenance personnel to repair. Automatic optical detector is a very widely used detection equipment in SMT patch factories today, and it has a trend of gradually replacing manual detection.

3, X-RAY detection X-RAY is commonly used in hospitals, the use of high voltage impact on the target to produce X-ray penetration to detect the quality of electronic components, semiconductor packaging products internal structure, and SMT welding quality of various types of solder joints. It is mainly used to detect the BGA chip with the pin located below, and can detect defects such as bridge, void, too large solder joint, and too small solder joint on the BGA. Some objects that cannot be seen on the surface can be detected with X-RAY. The general price is more expensive, and the application is less in small and medium-sized enterprises.

4, ICT detection ICT is an automatic online tester, which has a wide range of application and simple operation. ICT automatic online detector is mainly for production process control, can measure resistance, capacitance, inductance, integrated circuit. It is especially effective for detecting open circuit, short circuit, component damage, etc., accurate fault location, easy maintenance. SMT chip processing testing equipment is an important means to achieve quality control, which can effectively avoid the subjectivity of manual eye inspection and improve the accuracy and efficiency of testing.