ELXS421VSN221MP45S

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used electronic components in electronic systems. The ELXS421VSN221MP45S is an example of such a capacitor. It is a surface mount type aluminum electrolytic capacitor and has a capacitance of 421 uF at a rated voltage of 25V. The capacitance of this capacitor is significantly lower than the voltage, which indicates that it is designed for low voltage, low frequency applications. In addition to the low-voltage characteristics, ELXS421VSN221MP45S is also equipped with a wide variety of interesting features such as a low equivalent series resistance ( ESR) of 0.064 ohms, excellent frequency response, a price that is lower than its competitors, and a wide temperature range of -55°C to +105°C.

Application Field of ELXS421VSN221MP45S

The ELXS421VSN221MP45S is an ideal choice for uses in low-voltage circuits. Examples of such applications include power supplies, switch power supplies, inverters, electric motor drivers, rectifiers, audio equipment, measuring equipment, communications equipment, and video equipment.

The ELXS421VSN221MP45S is also suitable for use in high frequency applications, such as electric motor drivers, DC-DC converters, switching regulators, sensors, and microprocessors. In addition, it is also suitable for use in low noise, low frequency circuits such as oscillators, intercoms, and audio amplifiers. This capacitor also has a high ripple current capability, making it ideal for use in high ripple applications such as power supplies, inverters, and switching regulators.

Working Principle of ELXS421VSN221MP45S

The ELXS421VSN221MP45S is an aluminum electrolytic capacitor. As such, it consists of two layers of aluminum foil and a thin electrolytic layer between them. During the manufacturing process, one layer of aluminum foil is tightly wound and the other is stored in a sealed container. This sealed container is filled with an electrolyte solution and a conductive media such as activated carbon is added to facilitate the electrolysis process.

The inner surface of the aluminum foil is plated with an oxide layer. This oxide layer acts as an insulator and the current from the outer layer must flow across this oxide layer. This causes a small voltage drop across the capacitor and results in a potential difference between the two layers of aluminum, called the Polarization Voltage. This polarization voltage is necessary for the capacitor to be able to store and release electrical energy.

In an aluminum electrolytic capacitor, the outer layer, referred to as the negative electrode, is made up of aluminum foil and the inner layer, or the positive electrode, is the electrolyte component of the capacitor. When an external voltage is applied across the capacitor, current flows from the negative to the positive electrode. This current is stored in the capacitor and can be used to generate a voltage, allowing the capacitor to act as an energy storage device.

In summary, the ELXS421VSN221MP45S is an aluminum electrolytic capacitor and is ideal for use in low voltage and high frequency applications. It has a low ESR and a high ripple current capability, making it ideal for use in power supplies, inverters, and other similar applications. Its oxide layer and polarization voltage also allow it to act as an energy storage device.