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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are types of electrolytic capacitors that are equipped with an aluminum oxide-based ceramic dielectric material enclosed within rollable aluminum canisters. They are often used in electrical and electrical-mechanical applications where high capacitances and high levels of electric potential are a must. This type of capacitor is preferred because it offers several advantages for a variety of operations, including low cost, high capacitance, and wide temperature range.

B41231C8568M000 Application Field and Working Principle

The B41231C8568M000 is an aluminum electrolytic capacitor providing high capacitance value of 4700µF at 85°C for a wide range of electrical and electrical-mechanical applications, including those where extremely high capacitance is required. This capacitor features an extended temperature range of -40 to +125°C and ripple current rating of 13.2A (RMS) at +105°C operating temperature, making it suitable for a wide range of high-current applications found in power supplies, vibrator motor systems, switching circuits, and audio systems.

The working principle of the B41231C8568M000 determines its capability. This capacitor employs an electrolyte-filled polarizable aluminum oxide ceramic dielectric sandwiched between two aluminum foil electrodes. When the capacitor is connected across a power supply, the electrolyte is ionized and forms a double-layer structure between the two foils, where a strong electrical field is created. This effect is called “electrical polarization”, and it stores electrostatic energy in electric fields between the oxide layer and the aluminum foils.

The stored energy is then released when the capacitor is disconnected from the power source. This release occurs in a process known as “Faraday effect”, where an electric current travels through the capacitor’s plates and electrolyte. During this process, electrons are transferred from one plate to the other, thus changing the electrical potential between the plates.

The amount of energy that can be stored in the capacitor depends on the properties of the dielectric material, such as its thickness, relative permittivity, dielectric constant, and other factors. The capacitance of the B41231C8568M000 is determined by the thickness of its aluminum foils and its area, as well as the dielectric constant of its oxide layer. In this case, for example, the capacitor is capable of storing 4700µF of energy.

All in all, the B41231C8568M000 is a versatile aluminum electrolytic capacitor that is able to provide reliable operation in a wide temperature range and is suitable for many high-power applications. Its unique design makes it capable of storing an impressive amount of energy without compromising its dimensions.

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