The difference between ceramic capacitors and electrolytic capacitors (2)

Electrolytic capacitor is a positive electrode made of metal foil (aluminum/antimony), an insulating oxide layer of aluminum foil (aluminum oxide/niobium oxide) as a dielectric, and a capacitor made of a conductive material, an electrolyte, and other materials. Electrolytic capacitors are used for filtering, decoupling, signal coupling, time constant setting, and DC blocking in medium and low frequency circuits. Electrolytic capacitors have large capacity, but they are not resistant to high voltage, have unstable capacity, and have a short lifetime. They are used in low-voltage and low-frequency circuits. Electrolytic capacitors are graded and their equivalent series inductance is large.

Electrolytic capacitors have good low-frequency characteristics and are mostly used in low-frequency circuits. They can filter out low-frequency ripples and can be used as low-pass filters; they cannot be used in pure AC power circuits. Ceramic capacitors have a small capacity, high pressure resistance, good quality, and are used in high voltage and high frequency circuits. The ceramic capacitor has no polarity and the equivalent series inductance is small. Electrolytic capacitors have large capacity, but are not resistant to high voltage, have unstable capacity, and have a short lifetime. They are used in low-voltage and low-frequency circuits. Electrolytic capacitors are graded and their equivalent series inductance is large.