SMT is (surface mount technology) (an acronym for surface mounted technology), the electronic assembly industry in one of the most popular and a technical process. Electronic circuit SMT (surface mount technology, SMT), said for surface mount or surface mounted technology. It is a no pin or short lead surface mount components (SMC / SMD, the Chinese call sheet components) installed on the printed circuit boards (printed circuit board, PCB ) surface or other surface of the substrate, welding assembly of the circuit is connected by reflow soldering or other methods.
Usually we use electronic products are by the PCB and all kinds of capacitors, resistors and other electronic components according to the design of the circuit design, so all kinds of electrical appliances need different kinds of SMT processing technology to process.
SMT basic elements: the process of solder paste printing / parts mount -->AOI optical inspection / maintenance / return / welding plate.
Some people may ask answer electronic components why to do so complicated?? this fact and the development of our electronic industry is closely related to, today, the electronic products, the pursuit of miniaturization, previously used perforation plug-in components has been unable to narrow. Electronic product function can more complete, the integrated circuit (IC) has no perforated elements, especially on a large scale, highly integrated IC, had to use surface mount components. Product batch, automatic production, the factory to with low cost and high yield, produce high quality products to meet customer needs and strengthen the development of the market competitiveness of electronic components, integrated circuit (IC) open , semiconductor materials of diverse applications. Electronic technology revolution is imperative, chasing the trend. Can imagine, in Intel, amd the CPU, image processing production process of the component manufacturer strives to 20 nanometers, the SMT surface assembly technology and development is not to the situation.
SMT processing has the advantages of high density assembly, electronic products, small size, light weight, the volume and weight of the SMD components only traditional cartridge elements about a tenth of the common SMT, electronic products smaller 40% ~ 60%, the weight is lightened. High reliability and anti vibration can. Solder joint defect rate low. High frequency characteristics. Reduce the electromagnetic and radio frequency interference. Easy to realize automation, improve production efficiency. Reduces costs by up to 30% to 50%. Save material, energy, equipment, manpower and time.
Source: What is SMT Technology
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