Why use surface mount technology (SMT)?Finished Aluminium Substrate Pcb maker_Shenzhen StarLight Industrial Development Co., Ltd.

Why use surface mount technology (SMT)?Finished Aluminium Substrate Pcb maker

source:Other information release time:2023-05-08 Hits: Popular:PCB Assembly company: Share:

　　Electronic products pursue miniaturization, and the previously used perforated plug-in components cannot be reduced

　　Electronic products have more complete functions, and the integrated circuits (ICs) used no longer have perforated components, especially large-scale and highly integrated ICs, which have to use surface mount components

　　Mass production and automation of production require factories to produce high-quality products at low cost and high output to meet customer needs and strengthen market competitiveness

　　Development of electronic components, development of integrated circuits (ICs), and diverse applications of semiconductor materials

　　Electronic technology revolution is imperative, chasing international trends

　　(3) Input signal source current circuit

　　(4) The input circuit of the output load current circuit charges the input capacitor through an approximate DC current, and the filtering capacitor mainly plays a broadband energy storage role; Similarly, the output filter capacitor is also used to store high-frequency energy from the output rectifier while eliminating DC energy from the output load circuit. Therefore, the terminals of the input and output filter capacitors are very important, and the input and output current circuits should only be connected to the power supply from the terminals of the filter capacitor; If the connection between the input/output circuit and the power switch/rectifier circuit cannot be directly connected to the terminal of the capacitor, AC energy will be filtered by the input or output capacitor and radiated into the environment. The AC circuit of the power switch and the AC circuit of the rectifier contain high amplitude trapezoidal currents, which have a high harmonic component and a frequency far greater than the fundamental frequency of the switch. The peak amplitude can reach 5 times the amplitude of the continuous input/output DC current, and the transition time is usually about 50ns. These two circuits are most prone to electromagnetic interference, so these AC circuits must be laid out before wiring other printed wires in the power supply, The three main components of each circuit, including filter capacitors, power switches or rectifiers, inductors or transformers, should be placed adjacent to each other, and the position of the components should be adjusted to minimize the current path between them. The best way to establish a switch mode power supply layout is similar to its electrical design

Read recommendations:

PCB Assembly

Double Sided PCB