SMT SMD refers to a series of processed on the basis of PCB abbreviation. PCB (Printed Circuit Board) means printed circuit board. (Original: SMT chip refers to the PCB based on the processing of a series of processes in the abbreviation of PCB (PrintedCircuitBoard))
SMT is the surface assembly technology (Surface Mounted Technology) (abbreviation of Surface Mounted Technology), is currently the most popular in the electronic assembly industry, a kind of technology and process. Surface Mount Technology (SMT) for electronic circuits is known as surface mount or surface mount technology. It is a pinless or short-lead surface assembly components (referred to as SMC / SMD, the Chinese said sheet components) mounted on the surface of the printed circuit board (Printed Circuit Board, PCB) or the surface of other substrates, through the re-flow soldering or dip soldering and other methods to be welded and assembled circuit assembly technology.
In general we use electronic products are designed by the pcb plus a variety of capacitors, resistors and other electronic components according to the design of the circuit diagram design and become, so all kinds of electrical appliances need a variety of different smt chip processing technology to process.
SMT basic process components: solder paste printing - & gt; parts mounted - & gt; reflow soldering - & gt; AOI optical inspection - & gt; maintenance - & gt; sub-panel.
Some people may ask why pick up an electronic component to do so complex? This is in fact and the development of our electronics industry is closely related, today, the pursuit of miniaturization of electronic products, the previous use of perforated plug-in components have been unable to shrink. Electronic products are more complete, the use of integrated circuits (IC) has no perforated components, especially large-scale, highly integrated IC, had to use surface mount components. Product batch, production automation, the factory to low-cost high yield, produce quality products to meet customer demand and strengthen market competitiveness The development of electronic components, integrated circuits (IC) development, semiconductor materials, diversified applications. The revolution in electronic technology is inevitable, chasing the international trend. It can be imagined, in intel, amd and other international cpu, image processing device producers of the production process refined to 20 a few nanometers of the case, smt this surface assembly technology and the development of technology and process is also the case of necessity.
smt SMD processing advantages: high assembly density, small size and light weight of electronic products, the volume and weight of SMD components is only about 1/10 of the traditional plug-in components, generally after the use of SMT, the volume of electronic products to reduce the size of 40% ~ 60%, weight reduction of 60% ~ 80%. High reliability and vibration resistance. Low solder joint defect rate. Good high frequency characteristics. Reduced electromagnetic and radio frequency interference. Easy to realize automation and improve productivity. Reduce cost up to 30%~50%. Save materials, energy, equipment, labor, time, etc..
It is because of the complexity of the process of smt chip processing, so there are a lot of smt chip processing factories, specializing in smt chip processing, in Shenzhen, thanks to the booming electronics industry, smt chip processing achievements of an industry boom.