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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor (AEC) is a type of capacitor that uses an electrolyte to achieve a larger capacitance per unit volume than other types of capacitors. It consists of two metal plates or electrodes, typically aluminum foil, separated by a layer of electrolyte, typically thin paper saturated in an electrolytic solution which acts as the dielectric, or insulator. The aluminum electrolytic capacitor is more suitable for applications requiring higher voltage levels than ceramic capacitors. The aluminum electrolytic capacitor is used in a wide variety of applications in the electronics industry, such as power supplies, signal wave shaping, and energy storage.

EGXE630ELL471MM25S application field and working principle

The EGXE630ELL471MM25S is an aluminum electrolytic capacitor from Panasonic emphasizing long life and high reliability. It has 17.2µF capacitance, 16V rated voltage, 10% tolerance, and 105°C operating temperature.:

• The EGXE630ELL471MM25S is designed for high frequency High ripple current, such as switching power supplies, inverters, motor drive circuits, and other high capacity applications.
• The EGXE630ELL471MM25S is constructed with a non-solid electrolyte, which eliminates potential dry-up problems over the life of the product. This ensures long life reliability without maintenance.
• The EGXE630ELL471MM25S provides excellent ripple current capacity with a high reliability and long life, and is available in a variety of different sizes and capacitance values.

The working principle of an aluminum electrolytic capacitor is based on the movement of ions in the electrolyte. When a voltage is applied across the two metal plates, ions in the electrolyte are attracted towards the plates. This creates an electric field between the plates, which stores electric energy. The more ions that are attracted to the plates, the larger the electric field, and the higher the capacitance of the capacitor.

Conclusion

The EGXE630ELL471MM25S is an aluminum electrolytic capacitor that provides excellent ripple current capacity and long life reliability. It is perfect for high ripple current applications in the electronics industry, including switching power supplies, inverters, and motor drive circuits. The working principle of the capacitor is based on the movement of ions in the electrolyte, creating an electric field between the two metal plates.

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