UPB2C681MRD

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Aluminum electrolytic capacitors are a type of electrochemical capacitor that uses an aluminum oxide layer as the dielectric. The UPB2C681MRD is a type of aluminum electrolytic capacitor designed to offer capacitance values ranging from 2.2µF to 680µF, with a rated voltage of 25V, and a rated temperature range of -40°C to 85°C. It is commonly used in a wide variety of applications, from power supplies in computers and audio equipment to automotive starter motors and charging systems.

An aluminum electrolytic capacitor utilizes an electrolytic solution of aluminum ions and oxide ions. When a voltage is applied, the aluminum ions migrate to the negative terminal and the oxide ions migrate to the positive terminal, forming an aluminum oxide layer on the capacitor. This layer acts as the dielectric. The aluminum oxide layer enables higher capacitance values per unit volume than other types of capacitors, making aluminum electrolytic capacitors the preferred choice for higher density circuits.

The UPB2C681MRD has a standard cylindrical design with an anodized aluminum casing. The case also includes a hermetically sealed stainless steel lid. The rubber seal helps provide protection from the elements and dust, making it an ideal component for surface mount and high-temperature applications. Additionally, the UPB2C681MRD has a higher maximum ripple current rating and a higher temperature rating than other aluminum electrolytic capacitors.

The working principle of the UPB2C681MRD is relatively simple. When a voltage is applied to the capacitor, electrons flow from the negative to positive terminal, generating an electric field across the electrolytic solution that causes the ions to move to the opposite terminals. This builds up a charge on either side of the dielectric layer. This opposes the current and forms a storage of charge that is known as capacitance. As the voltage on the capacitors increases, current stops flowing and the diode is blocked. When the voltage is no longer applied the charge on the capacitor dissipates.

The UPB2C681MRD can be used in a variety of applications. Its small form factor and high capacitance make it ideal for use in switching power supplies, motor drives, pulse circuitry, audio equipment, and power amplifiers. It is also widely used in automotive components such as starter motors, charging systems, and ECU circuitry.

In conclusion, the UPB2C681MRD is a type of aluminum electrolytic capacitor that is designed for high capacitance and high voltage applications. Its small form factor, hermetically sealed casing and high ripple current rating make it an ideal component for a variety of applications, from switched power supplies to automotive components. Its working principle is based on the flow of ions between the positive and negative terminals, which generates a stored charge that is known as capacitance.

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