TVA1211-E3

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, typically abbreviated as “AlECs”, are one of the most common type of capacitors available in the market, and are used in a wide variety of applications. An AlEC is constructed with an anode and cathode, generally made from aluminum foil, and a separator, often of a polymer material. The aluminum layers are coated with a thin layer of oxide, which acts as an insulating layer. This layer of oxide is incredibly thin, yet strong enough to prevent electrical arcing between the two surfaces. The two anodes are then separated by a separator, which is typically a dielectric material such as PTFE, Kydex, or polypropylene. This separator, along with the oxide layer, enables the capacitor to build up a charge when connected with a voltage source.

The TVA1211-E3 aluminum electrolytic capacitor is a high-performance capacitor optimized for high-frequency applications. It features a substantially larger capacitance than standard AlECs and can easily handle ripple currents up to 2.3A. It consists of a cylindrical can with a bottom terminal and an axial lead connection, both made from Aluminum. The bottom terminal feature a mica insulation, which greatly reduces losses. The capacitor also has a low operating temperature, with an operating temperature range of -40°C to 85°C. It is available in values from 22uF to 330uF, and can be installed in either a vertical or horizontal configuration.

Working Principle

The TVA1211-E3 aluminum electrolytic capacitor works on the basic principles of capacitance. When a voltage is applied to the capacitor, an electric field is created between the two electrodes. This electric field increases the distance between the two electrodes, resulting in a decrease in the capacitance. The higher the voltage applied, the greater the capacitance decreases. The capacitor also has an inherent self-discharge rate, which is the rate at which it loses its charge when disconnected from its voltage source. This is due to the small amount of current that leaks through the oxide layer, and the amount of current that leaks is dependent on the thickness of the oxide layer and the temperature of the capacitor.

Application Field

The TVA1211-E3 aluminum electrolytic capacitor is suitable for a variety of high-frequency applications, such as power supplies, DC-to-DC converters, and audio amplifiers. It is also suitable for supporting microprocessors and logic circuits, as it has a very low equivalent series resistance (ESR). The capacitor can also be used as input/output or filtering capacitors in a variety of circuits, as its high capacitance and low resistance can reduce ripple currents. Additionally, its high temperature range enables it to be used in a wide range of environments and applications, such as automotive, industrial, telecommunications, and consumer electronics.

In summary, the TVA1211-E3 aluminum electrolytic capacitor is an excellent choice for a variety of high-frequency applications. Its high capacitance, low ESR, and wide operating temperature range make it suitable for a variety of applications, from consumer electronics to industrial applications.