Function and characteristics of chip electronic components
How amazing are the densely packed accessories on the electronic circuit boards of electronic products? The operation of electronic products depends on them! I believe that everyone is not unfamiliar with electronic components, even if they can’t name them, but they can roughly understand their functions.
Electronic components is a general term for electronic components and electronic devices. Electronic components are products that have not changed their molecular composition during processing. They usually include resistors, capacitors, inductors, potentiometers, relays, connectors, various sensitive components, resonators, filters, switches, etc. In most cases, electronic components are often specifically referred to as resistors, capacitors, and inductors. Electronic devices refer to products whose molecular structure has been changed during production and processing in factories, which usually include diodes, triodes, and integrated circuits.
The role of electronic components:
We all know that electronic products need programs to run, so what does the program rely on to run, no matter the big rockets, airplanes, car electronics, as small as mobile phones, sports bracelets and other products, there is no need to use electronic circuit boards, the initial stage of product design The important part is also the electronic circuit board, and the important components to ensure the normal operation of the electronic circuit board are the large and small components. The electronic components are connected to the PCB board after SMT chip processing or DIP post-welding, and Import the program software, and then you can perform functional tests.
Features of electronic components:
(1) Small size, light weight, saving raw materials.
Chip electronic components are small in size, generally on the order of 0.5mm to tens of millimeters in size, with a thickness of 0.2 to 2mm, and most of them have no lead wire or short lead wire structure. Therefore, the weight is reduced, the raw materials are saved, the cost is reduced, and the high-density assembly is facilitated, thereby promoting the miniaturization, thinning and light weight of the whole electronic machine.
(2) Conducive to improving the reliability of electronic equipment.
Chip-type electronic components have no lead wires or short lead wires, small size, light weight, and thinner thickness, especially the leadless structure, which makes it more able to withstand vibration and shock, and is easier to produce when the circuit is working The heat is dissipated, and the chip electronic components are designed and manufactured to meet the requirements of high-temperature welding conditions and cleaning conditions in the surface assembly technology. The materials of the chip electronic components and the appropriate packaging methods themselves are resistant to high temperature, Not afraid of welding and moisture resistant. In addition, the surface assembly technology does not need to use the plug-in assembly technology like the traditional lead-out electronic components, and the plug-in lead through hole is recognized as one of the main failure factors of the circuit. The surface mount circuit using chip electronic components fundamentally eliminates the root cause of this failure, thereby improving the reliability of electronic equipment.
Is strict. Nevertheless, considering the comprehensive cost of using chip electronic components, it is still lower than the cost of using traditional electronic components using traditional assembly technology, and the cost performance is extremely high.
(3) Excellent electrical performance.
The lead-free or short lead-out structure of chip electronic components reduces the parasitic inductance and capacitance caused by the lead-out lines, reduces the equivalent series resistance brought by the lead-out lines, and improves the cut-off of the electronic components themselves. frequency. It not only helps to improve the frequency characteristics and response speed of the entire circuit, but also hardly needs adjustment after assembly, which is beneficial to the assembly of high-frequency circuits.
(4) The size and shape are standardized, and the overall cost is low.
The overall dimensions of most chip electronic components have been standardized, and can be assembled using automatic post-installation machines, with high work efficiency, good welding quality, and mass assembly. Although the price of a certain type of chip electronic components is still higher than that of traditional electronic components, the price of chip electronic components themselves has the potential advantage of being cheaper than traditional electronic components.
The reason that the price of some chip electronic components is higher than that of ordinary electronic components is that on the one hand, the production technology is not yet mature, and on the other hand, the performance and manufacturing process requirements of chip electronic components are more demanding.
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