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AOI technology applied in SMT processing and its development In SMT’s AOI technology, the pattern recognition method has become the mainstream of application. This is because there are many specifications and types of surface mount components, PCB circuits, solder paste printing patterns, and assembled components among the main inspection objects of SMT’s AOI technology, and […]

1. SMT assembly quality inspection There are many inspection methods for the assembly quality of SMT products. The inspection methods currently used mainly include the following four types: manual visual inspection; electrical testing; automatic optical inspection and X-ray inspection. (1) Manual visual inspection Manual visual inspection in SMT assembly is to use human eyes or […]

The content of SMT assembly quality inspection and control is very rich. The basic content includes the inspection and control of incoming raw materials, the inspection and control of assembly process and the inspection and control of components after assembly. The incoming raw material inspection includes PCR and component inspection, as well as all SMT […]

SMT, SMA and their assembly 1. SMT Electronic circuit surface mount technology (SMT: Surface Mount Technology) is also known as surface mount or surface mount technology. It is a kind of surface assembly components without leads or short leads (SMC/SMD for short, often called chip components) placed on the surface of a printed circuit board […]

.1 Precision machining and ultra-precision machining The development of manufacturing technology has a history of thousands of years, from the stone age, the saw age, the iron age to the modern polymer plastic age; from hand-made, machine-made to modern intelligence Control automated production; at the same time, from general precision processing, precision processing to ultra-precision […]

What are the basic principles of PCBA manufacturability design? Let’s take a look with the editor of Dongguan SMT processing factory. 1. Preferred surface assembly and crimping components. Surface mount components and crimping components have good manufacturability. With the development of component packaging technology, most components can be purchased in packaging types suitable for reflow […]

The concept of design for manufacturability has been popular for many years. Different industries have different connotations. For example, in the machinery manufacturing industry, design for manufacturability generally refers to the design of parts for manufacturability. But in the field of electronics manufacturing, it mainly refers to the assemblability of parts. design. Design for manufacturability […]

The assembly method of SMT and its process flow mainly depend on the type of surface mount component (SMA), the types of components used and the conditions of assembly equipment. Generally, SMA can be divided into three types: single-sided mixed assembly, double-sided mixed assembly, and full-surface assembly, totaling 6 assembly methods. Different types of SMA […]

SMT process technical requirements With the rapid development and popularization of SMT, its process technology is becoming more mature and beginning to be standardized. The United States, Japan and other countries have formulated corresponding standards for SMT process technology. my country has also formulated: “General Technical Requirements for Surface Mounting Process”, “Technical Requirements for Assembling […]

Solders in SMT chip processing can be divided into tin-lead solder, silver solder, and copper solder according to their components. According to the environmental humidity used, it can be divided into high temperature solder (solder used at high temperature) and low temperature solder (solder used in a low temperature environment). In order to ensure the […]