UPB1E221MPD1TD

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Aluminum electrolytic capacitors, abbreviated as AECs, are capacitors composed of an aluminum foil conductor which serves as the anode, an extremely thin oxidized aluminum layer called the dielectric, and a liquid or solid electrolyte which serves as the cathode.

The UPB1E221MPD1TD aluminum electrolytic capacitors is a kind of bi-polar capacitors and thus have a greater energy density than other EE electrolytic capacitors. They are known for their efficacy in delivering high volumetric efficiency, low ESR and long life. The capacitance range is 3.0-470μF, with a voltage rating of 21.6Vdc.

Application Field

UPB1E221MPD1TD aluminum electrolytic capacitors are suitable for a wide range of applications in consumer, industrial and automotive markets, including signal processing, power supplies, DC-DC converters, humidity and temperature controllers, optical drives and LED lighting. The capacitors are smaller and occupy less area than conventional capacitors, making them ideal for compact electronic designs.

In particular, UPB1E221MPD1TD aluminum electrolytic capacitors are used in Consumer Electronics applications, such as in personal digital assistants (PDAs), LCD monitors, television receivers, portable audio players, cameras and gaming consoles. In Industrial & Automotive applications, they are used in uninterruptible power supplies (UPSs) , motor controllers, frequency converters, electric bike controllers, alarm systems, car immobilizers and engine speed controls.

Working Principle

All aluminum electrolytic capacitors operate under the same basic principle. When a direct current (DC) voltage is applied across the anode and the cathode, an electric field is created across the dielectric. This field produces an opposite electric charge on the cathode which is equal to and opposite to the charge of the anode. This equilibrium of equal charges causes charge separation between the anode and the cathode and forms what is known as a capacitor.

In the case of the UPB1E221MPD1TD aluminum electrolytic capacitor, the anode is a double-sided aluminum foil which is treated to form a strong oxidized layer. The electrolyte is a mixture of water, ethylene glycol, and other chemicals. The anode and the electrolyte form two separate layers in the capacitor. The electrolyte acts as an insulator between the two layers, and it also provides the ions necessary for charge transfer between the anode and the cathode.

When the electrical current is passed between the anode and the cathode, electrons flow from the anode to the cathode, where they are trapped by the electrostatic field of the electrolyte. This flow of electrons builds up an electric charge on the surface of the anode. The amount of electric charge stored depends on the capacitance of the capacitor, which is determined by the size and thickness of the anode and the type and concentration of the electrolyte.

Every time an AC voltage is applied to the capacitor, the electrolyte absorbs the current from the anode, which is stored as electrical charge. This allows the capacitor to store and deliver the current needed for a variety of applications.

In summary, UPB1E221MPD1TD aluminum electrolytic capacitors are ideal for a wide range of applications in consumer, industrial and automotive markets due to their high volumetric efficiency, low ESR and long life. They operate by storing electric charge in an electrically insulated oxide layer which is formed when a DC voltage is applied across the anode and the cathode.

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