UVZ2D221MHH

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used in modern electrical equipment due to their small size, low cost and high capacitance. The most common type of aluminum electrolytic capacitor is the polarized electrolytic capacitor, which has a positive and a negative lead. The positive lead is the anode, and the negative lead is the cathode. The anode is made of aluminum and the cathode is made of a combination of manganese dioxide and activated carbon.

The UVZ2D221MHH aluminum electrolytic capacitor is a polarized device that has a cylindrical form factor and radial lead termination. It is constructed with a metal-electrolyte-metal (MEM) structure, which consists of two metal plates separated by an electrolytic material. The device has a voltage rating of 4.5V to 25V and a temperature range of -55°C to 125°C. This capacitor is ideal for applications where low ESR, long life and low leakage current are required.

The working principle of the aluminum electrolytic capacitor is based on the phenomenon of electrochemical action. An electric field causes ions to move from the negative to the positive plate. This movement of ions creates an electric double layer of opposite charges on the surface of the two plates. This double layer acts as a dielectric and is responsible for the capacitance of the device. The capacitance of an aluminum electrolytic capacitor is determined by the area and distance of the plates, as well as by the dielectric material.

Since aluminum electrolytic capacitors are polarized devices, they must be connected correctly in order for them to function correctly. The positive lead must be connected to the anode and the negative lead must be connected to the cathode. This helps to prevent the capacitor from malfunctioning or even exploding. If the wrong polarity is applied, the device will not work as intended.

Aluminum electrolytic capacitors are commonly used in a wide variety of applications such as power supplies, motor control, lighting, and consumer electronics. Due to their cost effectiveness, small size, and high capacitance, aluminum electrolytic capacitors are one of the most popular types of capacitors used. The UVZ2D221MHH is a reliable and cost effective option for many applications requiring low ESR, long life and low leakage current.