B41821A7686M

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are a type of capacitor that are widely used due to their low cost, small size, and their ability to store a large amount of electric energy in a small package. They are also referred to as electrolytic capacitors, or aluminum capacitors. The B41821A7686M is a radial aluminum electrolytic capacitor, and it is categorized as a non-polar capacitor with a lead distance of at least 8mm. It is designed to manage or filter an audio or DC loop for power supplies, amplifiers, power analysis, and other applications.

Application Field

The B41821A7686M is capable of filtering high frequency noises, and can also offer an effective input filtering for power supplies. It can stabilize the ripple voltage and hold the power device working at a constant voltage. It is useful for preventing disturbances from the power supply or current circuit to enter the signal circuit. The B41821A7686M can also be used to similar effects to other inductor-free power filters.

Also, because of its low ESR, the B41821A7686M has the capabilities of working in high frequency switching power supplies, providing a stable current for DC regulators. It is also designed to have an extended frequency response, which makes it suitable for protecting audio signals in amplifier circuits.

Working Principle

The B41821A7686M is an aluminum electrolytic capacitor with radial leaded construction. The device consists of an anode foil, a dielectric layer, a cathode foil, and electrolyte. The electrolyte impregnated into the cathode foil produces H2 gas and ensures a good contact with the anode foil. The formation mechanism requires a voltage in order to activate the capacitor and to form the dielectric oxide film. This voltage determines the capacitance.

The dielectric film works as a barrier between two conductors and the insulation material, which is useful when forming a capacitor. An applied voltage to the metal plates will force the ions and electrons to separate and form a depletion region, which allows the electrons to move and current to flow. This current buildup causes a dielectric film to form and the electrons create a capacitance.

The B41821A7686M aluminum electrolytic capacitors are used to store electric energy in a small package and they are a reliable, durable, and efficient solution to a variety of power management and filtering needs. The device is designed to work at temperatures ranging from -40oC to +85oC, making it a versatile and cost-efficient option for applications where temperature stability is of extreme importance.

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