Because of the progress of science and technology, process requirements, the circuit board components also require more and more small space, the more efficient, so the research came out of the SMD components (no pins or short lead surface assembly components), these components have a small space, with the SMD machine for the SMT chip efficiency is very high, there are fewer and fewer problems. This is a manifestation of scientific and technological progress.
SMT SMD refers to the pcb based on the processing of a series of processes in the abbreviation of PCB (PrintedCircuitBoard), the Chinese name for the printed circuit board, also known as printed circuit boards, printed circuit boards, is an important electronic components, is the electronic components of the support body, is the provider of electrical connections of electronic components. Because it is made using electronic printing technology, it is called "printed" circuit board.
SMT SMD technology has 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 cartridge components, generally after the use of SMT, the volume of electronic products is reduced by 40% to 60%, and the weight is reduced by 60% to 80%. High reliability and shock 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 material, energy, equipment, labor, time, etc..