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Aluminum Electrolytic Capacitors

The 420USC82MEFC22X25 is an aluminum electrolytic capacitor made by USCONEC, a market leader in electrolytic capacitor manufacturing. This capacitor is used in many electronic applications such as in AC/DC power supplies, power regulator, lighting systems and switching converters. It is especially suitable for use in environments with frequent changes in temperature, vibration, or humidity.

The 420USC82MEFC22X25 is composed primarily of a polarized aluminum electrolyte, a tantalum-doped electrolyte, and foil layers sealed inside a casing. The capacitor is rated for 63V and a maximum working temperature of 105 degrees Celsius. It features low equivalent series resistance (ESR), low self-heating, and long life. It also has a high surge current capacity and excellent rippling characteristics.

Application Fields

The 420USC82MEFC22X25 aluminum electrolytic capacitor is used in a wide range of electronic applications and is invaluable for any device that requires a high frequency AC signal, such regular waveforms. Common applications for this capacitor include:

• AC/DC power supplies
• Switchmode power supplies
• Linear power supplies
• Power regulators
• Lighting systems
• Switching converters

Working Principle

The working principle of the 420USC82MEFC22X25 aluminum electrolytic capacitor is fairly simple. The capacitor’s construction consists of two electrodes separated by a thin layer of dielectric material. When the capacitor is connected to an external circuit, charges begin to flow from one electrode to the other via the dielectric material, creating an electric field. This electric field causes an electric potential difference between the two electrodes, allowing the capacitor to store energy as electrical charge.

The amount of energy stored in the capacitor is directly related to the size of the electric field, and thus the voltage across the capacitor. When the voltage applied to the capacitor is higher than the rated voltage, the electric field may become too large and cause the capacitor to become permanently damaged. For this reason, the capacitor must be operated within its rated voltage and temperature to prevent the risk of damage.

Conclusion

The 420USC82MEFC22X25 aluminum electrolytic capacitor is an essential component in a wide variety of electronic devices. With its excellent performance in high temperature, vibration, and humidity spaces, as well as its low ESR and long life, it is a reliable and versatile capacitor. While the working principle is simple, the capacitor must always be used within its rated voltage and temperature to ensure it does not become damaged due to an excessive electric field.

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