The difference between electrolytic capacitors and ordinary ceramic capacitors of the same capacity[Copy link]
Actually, you are very familiar with the usage of electrolytic tantalum capacitors and ceramic capacitors. You have only used them more in bypass filtering and rarely in other circuits. Can anyone give me some relevant usage information?
Due to differences in structure and materials, the main differences are in series equivalent inductance, series equivalent resistance and loss angle. It is recommended to read the device manual carefully and compare the parameters.
The chip takes up little space. The ceramic chip capacitor capacity of the chip is not large. The ceramic chip is used for high-frequency filtering. It is stable and has good insulation. Electrolytic capacitors also have chip. Electrolytic capacitors generally have large capacity, polarity, large ESR, and are used for filtering in medium and low frequency circuits.
The differences between electrolytic capacitors and ceramic capacitors are: electrolytic capacitors have large capacity, polarity, and large equivalent series inductance; ceramic capacitors have small capacity, no polarity, and small equivalent series inductance. Electrolytic capacitors have good low-frequency characteristics and are mostly used in low-frequency circuits; ceramic capacitors have good high-frequency characteristics and are mostly used in high-frequency circuits. Electrolytic capacitors can filter out low-frequency ripples, so they can be used as low-pass filters; ceramic capacitors can filter out high-frequency ripples, so they can be used as high-pass filters. Electrolytic capacitors cannot be used in pure AC power circuits; ceramic capacitors can be used in pure AC circuits. Electrolytic capacitors, in English, are aluminum eletrolytic capacitors. They are capacitors made of metal foil (aluminum/tantalum) as the positive electrode, the insulating oxide layer of the metal foil (aluminum oxide/tantalum pentoxide) as the dielectric, and conductive materials, electrolytes and other materials together as the cathode. Electrolytic capacitors are mostly used in medium and low frequency circuits for filtering, decoupling, signal coupling, time constant setting, DC isolation, etc. Ceramic capacitors are a type of capacitor that uses ceramic material as a dielectric, coats a layer of metal film on the ceramic surface, and then sintered at high temperature as electrodes. Ceramic capacitors are mostly used as loop capacitors and pad capacitors in high-stability oscillation circuits to play a role in filtering, decoupling, signal coupling, etc. For more details, please follow IND4 Automotive People
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