B43858A4475M000

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Aluminum Electrolytic Capacitors are widely used for various kinds of electrical applications, particularly in power supply systems. B43858A4475M000 is a type of aluminum electrolytic capacitors that is popularly used in the market. Thus, it is important to understand its application field and working principle.

Application Field of B43858A4475M000

B43858A4475M000 is primarily used for filtering, bypassing, energy storage, de-coupling, and vibration damping, etc. This aluminum electrolytic capacitors features a maximum working voltage of 25VAC and its extended frequency range up to 140,000HZ. Its response time is fast and is ideal for applications where transient pulse currents and short switching cycles are present. With its low equivalent series resistance (ESR), B43858A4475M000 is great for coupling and decoupling circuits.

B43858A4475M000 aluminum electrolytic capacitors are also capable of current handling (ripple current) up to 0.52A and are highly resistant to shocks and vibrations, making them suitable for use in the environment that is frequently subjected to those two. It can also operate in relatively high temperatures, up to 170°C, and has high insulation resistance and capacitance stability.

Due to its wide range of features, B43858A4475M000 capacitors are used in many applications such as in electronic equipment for electronic power, lighting, radio, medical, military, automotive, audio, industrial, and electrochemical systems.

Working Principle of B43858A4475M000

An aluminum electrolytic capacitor, including B43858A4475M000, has five parts: an anode, an electrolyte, a cathode, a seal, and a conductive dielectric. The anode is aluminum foil. An alloy of aluminum is used as a seal, with an electrolyte being tetrafluoroethane-doped ethylene oxide with surfactant added. This electrolyte with 90% ethylene oxide (basically dry-air) and 10% tetrafluoroethane does not evaporate in normal operating conditions. The cathode may be made of paper or metal.

When electricity is applied, the alloy in the seal forms an oxide layer that acts as a barrier between the electrolyte and the aluminum foil. This mechanism causes a polarization of the capacitor. During the capacitor\'s operation, electrolyte forges a path between the anode and the cathode. This path allows electrons to move between the two pieces, forming a flow of current. When this process continues for an extended period of time, an electric field is created which further polarizes the capacitor.

The dielectric in an aluminum electrolytic capacitor is an important part; as it affects the capacitor’s characteristics and determines the effectiveness of the capacitor. Usually, the dielectric consists of an electrolyte that conducts the electric current, as well as aluminum oxide, which dissipates electric energy. In B43858A4475M000 aluminum electrolytic capacitors, the dielectric is made of a combination of an organic electrolyte and aluminum oxide. This allows for a low ESR and a high ripple capacity.

Conclusion

In conclusion, B43858A4475M000 aluminum electrolytic capacitors feature a wide range of features such as low ESR, fast response time, high ripple capacity, and extended frequency range, making them suitable for various kinds of application such as filtering, bypassing, energy storage, de-coupling, and vibration damping. The working principle of the B43858A4475M000 Aluminum electrolytic capacitors lies in the formation of an oxide layer between the anode and the cathode, that acts as the dielectric and allows for the flow of current.

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