What is the difference between a chip aluminum electrolytic capacitor and a solid capacitor?
Article Source：QUNIO ELECTRONICS
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issuing time：2019-04-11
Solid capacitors are called: solid aluminum electrolytic capacitors. The biggest difference between it and ordinary capacitors (ie, liquid aluminum electrolytic capacitors) is that different dielectric materials are used. The liquid aluminum capacitor dielectric material is the electrolyte, and the solid capacitor dielectric material is the conductive polymer. For those who often go to Internet cafes or use computers for a long time, there must have been or heard from the instability of the computer due to the capacitance of the board, or even the bursting of the capacitor! That is because on the one hand, the board is used for a long time, and the overheating causes the electrolyte to expand due to heat, causing the capacitor to lose its effect or even exploding due to exceeding the boiling point! On the other hand, if the board is not energized for a long period of time, the electrolyte easily forms a chemical reaction with the alumina, causing an explosion when it is turned on or energized. But if you use solid capacitors, there is no such hidden danger and danger!cQO群奥|群奥电子|东莞群奥|樟木头群奥|东莞电容器|东莞铝电解电容器|东莞电容器生产厂家|樟木头铝电解电容厂家 |东莞市
Since the solid capacitor uses a conductive polymer product as a dielectric material, the material does not interact with the aluminum oxide, and does not explode after being energized; at the same time, it is a solid product, and naturally there is no crack due to thermal expansion. The situation is gone.
Solid capacitors are environmentally friendly, low impedance, high and low temperature stability, high ripple resistance and high reliability. They are the highest-end products in electrolytic capacitors. Since the solid-state capacitance is much better than the liquid aluminum capacitor, the solid-state capacitor has a temperature resistance of 260 degrees and good conductivity, frequency characteristics and longevity. It is suitable for low voltage and high current applications, mainly used in digital products such as thin DVD and projection. Machines and industrial computers have also been widely used in computer card products in recent years.
Summary: In fact, the chip capacitor is essentially the same as the electrolytic capacitor described above. The difference between them is only in the package or the soldering process. Whether it is a plug-in or a chip-mounting process, the capacitor itself is erect. PCB, the fundamental difference is the capacitor installed in the SMT chip process, with a black rubber base. The benefits of SMT are mainly in terms of production. It is highly automated and has high precision. It is not as easily damaged as plug-in in transit. However, the SMT chip process requires a wave soldering process. The capacitor may affect performance after passing through a high temperature. In particular, the cathode uses an electrolyte capacitor, and the electrolyte may dry out after a high temperature. The plug-in process has a low installation cost, so the performance of the capacitor itself can be better at the same cost. Due to the low mechanical cost of the European and American factories and the high cost of labor, most of them tend to manufacture SMT patches. The labor in domestic factories is cheaper, so manufacturers are more willing to use plug-in installation.
