B43504H2108M007

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used due to their high energy density and very small volume. They consist of two metal plated rolled up together in an aluminium can, separated by a liquid electrolyte. The two metal plates are made of aluminum foil with an oxidized oxide layer on one side. This two plate design makes them ideal as electrical storage devices, as the capacitance, voltage and temperature ratings are very dependent on the physical characteristics of the two plates.

Aluminum electrolytic capacitors are used where capacitance and high stability are desired. Unlike film capacitors, they provide good performance over a wide range of temperatures and frequencies. They are normally rated for 10,000 to 100,000 hours of continuous use and can remain stable for years while dissipating little or no energy. The downside of aluminum electrolytic capacitors is that they need periodic maintenance and replacement due to the effects of aging and corrosion.

B43504H2108M007 application field and working principle

The B43504H2108M007 is a low-ESR aluminum electrolytic capacitor from EPCOS. With a capacitance value of 270µF, rated voltage of 25V and tolerance of ± 20%, this capacitor is suited for low-noise output voltage operations. It has a maximum ripple current of 10.5mA for 10kHz operation, and can operate within the temperature range of -40°C to 105°C. The B43504H2108M007 has a standard profile of 25mm diameter, with a height of 19mm.

The B43504H2108M007 consists of a series of metals plates with a liquid electrolyte. When a voltage is applied to the capacitor electrodes, electrons are attracted to the oxidized side of the aluminum plates. The attraction of the electrons creates a negative charge on the oxidized plate, and a positive charge on the unoxidized plate. A strong electric field is generated between the two plates, creating a storage of electric energy as charge carriers. The amount of energy stored in the capacitor is determined by its capacitance value. The higher the capacitance, the greater the capacitance produced by the capacitor.

The B43504H2108M007 is suitable for use in a wide range of applications such as AC power filter, signal output filter, switching power supply chopper, AC load sharing, and various signal filtering circuits. It can also be used in circuit voltage stabilizers, short circuit protection, overvoltage protection, and EMI filter circuit. The capacitor has a useful life of 10,000 to 100,000 hours, depending on the operating temperature and environmental conditions.

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