B43821A4105M

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Aluminum electrolytic capacitors, or simply aluminium electrolytics, also called electrolytic capacitors, are capacitors whose anode plate is made of a pure aluminum foil with an oxide layer acting as the dielectric. A layer of solid electrolyte covers the rough surface of the oxidized foil. The upper surface of the oxide layer is covered with a metal layer, usually aluminum or tin. The opposite metal plate connected to the capacitor’s inner anode terminal is called the cathode. The cathode is usually covered with a layer of conducting material such as graphite or carbon to serve as a current collector.B43821A4105M, is a kind of aluminum electrolytic capacitors. They have application fields and working principle just like other aluminum electrolytic capacitors.

Application field

B43821A4105M aluminum electrolytic capacitors are usually used in power supply circuits for computers, frequency converters, air conditioners, TVs and other electric home appliances, as well as power supplies for high-precision equipment. They can maintain stable performance under working temperature range between -40℃ and +70℃. Furthermore, these capacitors are used for high-precision radio frequency, inverter, rectifier, switching power supply and modulation circuits and can also be used in the circuit for dynamic response.

Working principles

The structure of B43821A4105M aluminum electrolytic capacitors consists mainly of an anode, an oxide film, a cathode and an electrolyte. It is also composed of an insulating shrink sleeve and other materials. When a voltage is applied, positive ions are attracted to the oxide film on the anode and negative ions are attracted to the metal collector (connected to the cathode). This charge separation causes the anode oxide layer to increase in size as a greater amount of positive ions is attracted to the surface, which creates an electric field. The size and strength of this electric field is directly proportional to the applied voltage. The electrons flow from the negative terminal to the surface of the oxide layer, forming a thin electron cloud.. This cloud is called the space charge. The space charge prevents electrons from passing through the oxide layer and the positive and negative charges are separated. This forms a capacitor, with the oxide dielectric layer in the center. The capacitance of the aluminum electrolytic capacitor is determined by the thickness of the oxide layer, the area of the of the anode and cathode and the electric field strength.

In conclusion, B43821A4105M aluminum electrolytic capacitors are widely used in electric circuits to provide power storage and to regulate the flow of electrical current. They can also be used in high-precision radio frequency, inverter, rectifier, switching power supply and modulation circuits, as well as in the circuit for dynamic response. Furthermore, these capacitors feature a stable performance under working temperature range between -40℃ and +70℃, which makes them well-suited for power supply circuits for computers, frequency converters, air conditioners, TVs and other electric home appliances, as well as power supplies for high-precision equipment.

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