220MXG560MEFC25X30

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Aluminum electrolytic capacitors (AECs) are the perfect solution for a wide range of applications that require storing electrical energy and providing a path for circulating electric current. Among AECs, the 220MXG560MEFC25X30 is an aluminum electrolytic capacitor employing a polarized electrolytic system and uses a valve-regulated electrolyte housing that offers superior performance characteristics.

Description & Specifications

The 220MXG560MEFC25X30 aluminum electrolytic capacitor has a temperature range of -55°C to +125°C and an operating frequency range up to 1 KHz. It is rated for voltage up to 25 volts, has a 2.5 mm diameter, and a 6 mm insulation sleeve. Its unique characteristics include a maximum ripple current capability of 2.9 A at 85°C and its life expectancy rating of 2000 hours at rated temperature and voltage.

Application & Working Principle

AECs are best suited to applications where electrical energy needs to be stored and released over time. The 220MXG560MEFC25X30 is most suited for boards, electronics, and power electronics where low-loss capacitor movements are required. It is also suitable for high-frequency circuits that require high stability and reliability.

The 220MXG560MEFC25X30 aluminum electrolytic capacitor works by the process of reduction and oxidation. The roughness of the aluminum foil, along with the oxidizing electrolyte, acts as a dielectric medium resulting in the formation of a film of oxide on the surface of the aluminum. The resultant Oxide-Aluminum Junction forms the storage medium for both electrical current, energy, and voltage.

In general, the working principle of an aluminum electrolytic capacitor is that it utilizes a fixed metallic plate and a semiconductor or film dielectric to store and discharge electricity. The fixed plate carries a positive charge, the dielectric carries a negative charge, and the two are separated by a medium such as oil or electrolyte in order to allow proper functioning. The electrolyte has the task of transmitting charge carriers (electrons) between the two metallic plates and also acts as the connection between them.

When current is passed through the electrolyte, electrons flow from the negative electrode to the positive electrode, while the opposite current occurs from the positive electrode to the negative electrode. These electrons create a difference in potential between both electrodes, resulting in a capacitive discharge. This voltage then translates to stored electrical energy, which can be released when required due to the nature of the AEC.

Advantages & Disadvantages

Aluminum electrolytic capacitors have a wide range of advantages such as better capacitance and relatively high energy density. They are also much more reliable than other capacitors, with a longer lifetime, higher temperature coefficient, and lower leakage and impedance losses. They also have the ability to self-heal after a dielectric breakdown.

Some disadvantages associated with aluminum electrolytic capacitors include an improper selection of electrolyte and the narrow operating temperature range. Additionally, they require a specific mounting procedure that can be cumbersome, and require frequent maintenance due to risk of corrosion.

Conclusion

The 220MXG560MEFC25X30 aluminum electrolytic capacitor offers superior performance characteristics in a wide range of general purpose applications. It has a wide temperature range, higher capacitance, and better reliability compared to other AECs. While it does have some drawbacks, these are easily overcome with proper selection, installation, and maintenance, which will ensure a long-lasting and reliable aluminum electrolytic capacitor.

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