What is a Aluminum Electrolytic Capacitor and its characteristics and applications?

1.Aluminum Electrolytic Capacitor is made of oxide film with a thickness of 0.02 ~ 0.03 mm.

The aluminum electrolytic capacitor has the positive and negative poles, and the aluminum foil is the positive electrode. The reason why the electrolytic capacitor is positive and negative is that the oxide film medium has unidirectional conductivity.

The larger the capacitance of the capacitor is, the larger the pulse current can be tolerated, the larger the capacity error is, the greater the leakage current is; ordinary aluminum electrolytic capacitors are not suitable for high frequency and low temperature applications, and should not be used for low frequency bypass and signal coupling above 25 kHz, in the power filter circuit. When it is connected to the circuit, the polarity must be connected correctly, otherwise the capacitor will be damaged.

 Note : the capacitance, voltage, and polarity of the electrolytic capacitor are marked on the outer shell, and the " + " indicates the positive electrode, or is indicated by the long lead of the electrode; " a negative electrode, or a short lead on the electrode. ".

2.Main characteristic

1 ) The capacity of unit volume is large and the weight is light. Capacitance : 0.47 ~ 10000F.

2 ) Electrolytic capacitors are usually polar, that is, positive and negative.

3 ) The dielectric constant is large and the range is 7 ~ 10.

4 ) The time stability is poor, the storage time is long, and the capacitance error is large.

5 ) The leakage current is large, the loss is large, and the capacity and loss will vary with the temperature. The aluminum electrolytic capacitor is only suitable for the temperature range of -20 ~ + 509°C.

 6 ) pressure is not high, rated voltage : 6.3 ~ 450V, the price is cheap.

3.Basic applications :

Mainly used in power filter, low-frequency coupling, decoupling bypass and other circuits.

If you want to know more, our website www.allicdata.com has product specifications for the aluminum electrolytic capacitor, you can go to and get more information.

Aluminum electrolytic capacitor: EEE-0JA470WR