476LBA450M2BC

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are the most widespread type of capacitors, and are generally available in much greater capacitance values than other types of capacitors. This type of capacitor consists of an aluminum foil with an oxide layer acting as the dielectric, with solid or liquid electrolytes acting as the second electrode. Because of their high capacity in relatively small volume, and their availability in larger values, aluminum electrolytic capacitors are used in a variety of applications. In this article, we will discuss the application field and working principle of the 476LBA450M2BC electrolytic capacitor.

Application Fields

The 476LBA450M2BC aluminum electrolytic capacitor is able to store relatively large amounts of energy in small packages, making them suitable for power-supply applications in motor and medical equipment, instrumentation, audio-visual systems, IT, telecommunication, and automotive components. They are typically used in power supplies, DC-DC converters, motor, and many other frequency-dependent applications.

Working Principle

Aluminum electrolytic capacitors use a thin aluminum oxide layer as a dielectric, and electrolytes as the second electrode. The oxide layer has relatively high dielectric constant, allowing it to store relatively large amounts of energy in a small package. When a DC voltage is applied to the capacitor, the oxide layer is polarized and stores charge. The amount of charge stored depends on the size of the oxide layer and the applied voltage. The stored current can be read directly from the capacitor due to its polarization.

The 476LBA450M2BC aluminum electrolytic capacitor uses an electrolyte in the form of a gel or liquid, which further increases the capacitance and allows it to absorb moisture more easily. The electrolyte used in these capacitors greatly affects its performance, especially its working temperature, capacitance, leakage current, and life expectancy. The electrolyte also increases the voltage rating of the capacitor, allowing it to be used in higher voltage circuits.

The 476LBA450M2BC is rated for a working voltage of 450V and is able to handle fast transients of up to 400V. The aluminum casing of the capacitor provides excellent electrical shielding, allowing it to be used in applications with electromagnetic interference. The capacitor is also equipped with over-temperature protection, designed to protect the capacitor in the event of unusual system temperatures.

Conclusion

The 476LBA450M2BC aluminum electrolytic capacitor is an excellent choice for a variety of applications due to its high capacitance, low profile, and ability to handle fast transients. The electrolyte used in the capacitor gives it increased performance characteristics such as temperature and voltage ratings, as well as increased life expectancy. The aluminum case of the capacitor also provides excellent electrical shielding to reduce the effects of electromagnetic interference.

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