MAL212364101E3

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Introduction to Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is an electrical component constructed of a wound anode of aluminum around a central etched core of aluminum oxide that has two separate currents applied to it; one that forms a scavenger type oxide film on one side and one that is used to create a source of electrons on the other side for direct conduction of electricity. The two plates, which are separated by an electrolyte of either water or electrolyte gel, ultimately form a capacitor with a maximum rated voltage, capacitance and temperature stability. The MAL212364101E3, specifically, is an aluminum electrolytic capacitor designed specifically for use in power supplies and varying applications requiring a high degree of capacitance.

MAL212364101E3 Application Field and Working Principle

The MAL212364101E3 capacitor, with its maximum rated voltage of 450V AC, is suitable for a variety of power supply applications. These applications include power supplies, DC-DC converters, AC/DC switching power supplies, and power factor correction. Its superior capacitance also allows for better filtering of AC ripple and smooth voltage control. The MAL212364101E3 is also suitable for noise filtration in high-power, high-voltage, and high-temperature applications. Its low ESR (equal series resistance) further makes it suitable for low impedance power circuits.

The working principle behind the MAL212364101E3 is relatively simple. An aluminum case is filled with an electrolyte in which two aluminum foils are placed directly across from one another. When voltage is applied to the aluminum foils and the electrolyte, the electric field created between them causes an electrical current to flow. This current flow causes an oxide film to form on the electrodes, which acts as an electrical insulator, further increasing the potential difference between the two plates and storing a charge. This charge is further increased with an increase in temperature, making the capacitor useful in temperature compensation.

When energy is needed to be discharged, the oxide film is broken down, and the current will flow through the reversed direction of the initial charge creating a reverse leakage current. The preferred leakage current of the MAL212364101E3 capacitor is 40mA, with a reverse leakage current of200µA. This reverse flow has an influence on the capacitor capacitance, and so the MAL212364101E3 has its capacitance measured after being subjected to a 1000 hour aging test.

Conclusion

The MAL212364101E3 is an aluminum electrolytic capacitor designed for power supply applications. It boasts superior capacitance, temperature stability, and a maximum rated voltage of 450V AC. Its low ESR rating makes it ideal for low impedance power circuits, while its high temperature stability makes it ideal for temperature compensation. Its maximum leak current is 40mA, while its reverse leakage current is 200µA. These features, combined with its 1000 hour aging test, make it the ideal capacitor for power supply applications.

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