UVR1A221MEA

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Aluminum Electrolytic Capacitors

A aluminum electrolytic capacitor is a type of capacitor that uses a layer of aluminum oxide as the dielectric, rather than the typical paper or plastic-based dielectrics used in most other types of capacitors. UVR1A221MEA is a typical aluminum electrolytic capacitor with insulated electrodes which is widely used owing to its compactness, self-healing function, large capacitive value and long life.

UVR1A221MEA Application Field

UVR1A221MEA is the most popular aluminum electrolytic capacitor. Its applied voltage range is 6.3VDC to 100VDC and capacitance range is 220μF to 2200μF. It is mainly used for the frequency inverter, servo system, motor applications, and various power supplies to attenuate the pulse current, filter the ripple current, suppress the switching noises and for energy storage. It is also used for all kinds of power electronics application in cars, as industrial machinery, industrial automation, audio equipment, medical instruments etc. UVR1A221MCA is a reliable component to stabilize the voltage and reduce the interference.

UVR1A221MEA Working Principle

The UVR1A221MEA capacitor consists of two metal electrode plates, an electrolyte, and a dielectric. The aluminum electrolyte acts as the main capacitance element, while the oxide layer functions as the dielectric material, insulating the two plates and preventing current from flowing until the applied voltage is strong enough to break down the barrier. When the capacitor is storing up electrons, the aluminum electrolyte becomes polarized, attracting electrons to the negative plate. When the voltage reaches a certain level, the energy of the electric field will cause the electrons in the dielectric material to tunnel through the barrier to the positive plate.

The operating voltage of the UVR1A221MEA aluminum electrolytic capacitor is 6.3V to 100V and it can be as high as 200V in extreme cases. As the negative electrode is aluminum foil, the positive electrode is usually manganese dioxide. The electrolyte is an aqueous organic liquid, generally composed of alkali, surfactant, and solvent. The dielectric is an aluminum oxide film, which is formed when the electrolyte reacts with the aluminum foil.

As the aluminum electrolyte offers a high capacitance value in a small form factor, UVR1A221MEA aluminum electrolytic capacitors are widely used in power supplies, motor drives, and other applications that require a high capacitance value. For example, in inverter drives, the capacitors provide energy storage and voltage stability, as well as suppressing switching noise.

Conclusion

UVR1A221MEA is one of the most popular aluminum electrolytic capacitors on the market. It is used in power electronics applications such as frequency inverters, servo systems, and car applications, to provide energy storage, voltage stability, attenuate the pulse current, filter the ripple current, and suppress the switching noises. From its principle of operation, it consists of two metal electrode plates, an electrolyte, and a dielectric.

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