??There are many classification methods and types of electrolytic capacitors. Based on the materials and characteristics of the capacitors, they can generally be divided into the following categories:

??1) Aluminum electrolytic capacitors

??The capacitance range is 0.1? F ~ 22000? F, the best choice for high pulsating current, long life and large capacity, widely used in power supply filtering, decoupling and other occasions.

??2) Film capacitor
??The capacitance range is 0.1pF ～ 10? F, with smaller tolerances, higher capacity stability and extremely low piezoelectric effect, so it is the first choice for X, Y safety capacitors and EMI/EMC.

??3) Tantalum capacitor
??Capacitance capacity range is 2.2? F ~ 560? F, low equivalent series resistance (ESR), low equivalent series inductance (ESL). The pulsation absorption, transient response and noise suppression are better than aluminum electrolytic capacitors, which is an ideal choice for high-stability power supplies.

??4) Ceramic capacitor
??The capacitance range is 0.5pF ～ 100? F, the crystallization of unique materials and thin film technology, caters to today's "lighter, thinner, more energy-saving" design concept.

??5) Super capacitor
??Capacitor capacity range is 0.022F ~ 70F, extremely high capacitance value, so it is also called "golden capacitor" or "farad capacitor". The main features are: ultra-high capacitance value, good charge/discharge characteristics, suitable for electric energy storage and power backup. The disadvantage is that the withstand voltage is lower and the operating temperature range is narrow.