Do you know how to distinguish aluminum electrolytic capacitors?

Electrolytic capacitors:

Electrolytic capacitors generally have positive and negative poles, that is, they have polarity. Therefore, the positive and negative poles cannot be wrongly connected when used in the circuit. It is now possible to manufacture non-polar or electrolytic capacitors for AC circuits, called bipolar electrolytic capacitors or non-polar electrolytic capacitors. Under the action of the applied voltage, the device that is partially damaged for some reason has the function of self-repairing. This phenomenon is called self-healing of electrolytic capacitors.

Electrolytic capacitors can generally only be used in the range of -20°C to +70°C. Characteristics are greatly affected by temperature and frequency. Generally, aluminum electrolytic capacitors are often used. The model of aluminum electrolytic capacitors is generally CDXX, and the capacity, withstand voltage, positive and negative electrodes are marked on the shell. Sometimes it is also expressed by the length of the , the long line is positive and the short line is negative.

The loss of aluminum electrolytic capacitors is large, and the temperature and frequency characteristics are poor, which limits the application in AC circuits.

Tantalum Electrolytic Capacitors:

Tantalum electrolytic capacitors are capacitors that use metal tantalum as the electrode and tantalum oxide as the dielectric. The characteristics are: high chemical stability, high rated pressure resistance, good high temperature resistance, high mechanical strength and small size. Commonly used CA logo, its capacity is from 0.47uF to 1000uF, and the rated withstand voltage is mainly 6.3V, 10V, 16V, 63V. The performance is far better than aluminum electrolytic capacitors, but the price is more expensive.

Other electrolytic capacitors include niobium electrolytic capacitors, which have better performance and smaller size. Titanium electrolytic capacitors, tantalum-niobium electrolytic capacitors.