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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are electrochemical devices which use aluminum oxide to create a dielectric between two conductors. It is the most common and favored capacitor type, especially since it is very cost-effective and compact enough to fit into tiny electronic equipment. They are also the type used for large bypass or filtering capacitors in power supplies, which need to withstand very high ripple current. Aluminum electrolytic capacitors provide high capacitance in relatively small dimensions, typically more than two orders of magnitude greater than comparable ceramic capacitors.

B43564A4129M7 Application Field and Working Principle

B43564A4129M7 is an aluminum electrolytic capacitor manufactured by EPCOS. Its rated capacitance is 12µF, temperature range from -40℃ to +105℃ and its voltage range is 125V. It is used mainly for the smoothing of audio signals in radio equipment, equalizing and fuzziness in telecommunications and professional sound systems, and other electronic applications. It is also used in high-end audio amplifiers.

The working principle of aluminum electrolytic capacitor is based on the energy difference between two electrolytes. An electrolyte is a liquid or gel that has an electrical charge. When two different electrolytes are brought into contact, they create an electric field that allows electrons to flow freely between them. This causes a potential energy difference, or a voltage. This voltage is used to store electric charge in the capacitor.

The two main types of electrolytic capacitors are aluminum electrolytic capacitors and tantalum electrolytic capacitors. The aluminum electrolytic capacitors have a higher charge-discharge rate and a lower equivalent series resistance than tantalum capacitors. They are also more economical, which is why they are used in many electronic circuits.

Another important characteristic of the aluminum electrolytic capacitor is its self-healing capability. Self-healing means that a capacitor is able to recover from an overvoltage situation without any permanent damage. A self-healing capacitor always maintains a stable capacitance, regardless of the applied voltage. In cases where the aluminum electrolytic capacitor is subjected to an overvoltage situation, it will be able to recover back to its original state once the voltage is reduced.

B43564A4129M7 aluminum electrolytic capacitors are capable of withstanding high currents, and they have a low intrinsic ESR (Equivalent Series Resistance). These capacitors can be used in high-performance analog audio applications, where their combination of high capacitance and impedance will provide excellent sound reproduction. They can also be applied in other high-performance power supply designs, where the low ESR and ripple current capabilities are beneficial.

B43564A4129M7 aluminum electrolytic capacitors can be used in a variety of applications. For example, they can be used as energy storage in power supplies, as filters in power conditioning systems for high-performance audio equipment, as snubbers in instrumentation, and in various other applications. These capacitors are also used in military and aerospace applications, where they are expected to provide reliable performance in high vibration and temperature environments.

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