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Advantages of Solid Electrolytic Capacitor - News

Advantages of Solid Electrolytic Capacitor

366 Published by at August 13,2019

Solid capacitor is called solid aluminium electrolytic capacitor. The biggest difference between liquid aluminium capacitor and ordinary capacitor is that different dielectric materials are used. Liquid aluminium capacitor dielectric material is electrolyte, while solid capacitor dielectric material is conductive polymer material.


Advantages of solid electrolytic capacitors

1. High stability

Solid aluminium electrolytic capacitor can work steadily in high temperature environment. The performance of motherboard can be improved directly by using solid aluminium electrolytic capacitor. At the same time, because of its wide temperature range of stable impedance, it is suitable for power filter. It can effectively provide a stable and abundant power supply, especially in the ultra-frequency.

2. Long life

Solid-state aluminium electrolytic capacitors have a very long service life (service life of more than 50 years). Compared with liquid aluminium electrolytic capacitor, it can be counted as "long life 100 years". It will not break down, and there is no need to worry about the drying up of liquid electrolytes and leakage affecting the stability of the motherboard. Because there are no problems of liquid electrolyte, the solid-state aluminium electrolytic capacitor makes the motherboard more stable and reliable.

Solid electrolytes do not expand or even burn as liquid electrolytes do in high-temperature environments. Even if the temperature of the capacitor exceeds its tolerance limit, the solid electrolyte is only melting, which will not cause the metal shell of the capacitor to burst, so it is very safe.


3. Low ESR and high rated ripple current

ESR refers to series equivalent resistance, which is a very important index of capacitor. The lower the ESR, the faster the charging and discharging speed of capacitors. This performance directly affects the decoupling performance of microprocessor power supply circuit. The advantage of low ESR characteristics of solid electrolytic capacitors in high-frequency circuits is more obvious. It can be said that the low ESR characteristics at high frequencies are the watershed between the performance differences of solid-state electrolytic capacitors and liquid-state capacitors. The ESR of solid-state aluminium electrolytic capacitor is very low and has very small energy dissipation. The very low ESR characteristics of solid state capacitors under high temperature, high frequency and high power conditions can fully absorb the high amplitude voltage generated between power lines in the circuit and prevent its interference to the system.

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