B41821A8226M8

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Aluminum electrolytic capacitors are primary components of electronic circuits with the ability to store electrical energy and release it on demand. They are one of the most abundant and versatile types of capacitors available on the market today. B41821A8226M8 is one of such aluminum electrolytic capacitors and it is used in various applications.

Application Field and Working Principle

The B41821A8226M8 aluminum electrolytic capacitor is a radial leaded, non-solid electrolytic capacitor with 2.5mm lead spacing. This capacitor has a temperature range of -25/+85℃, a maximum voltage of 16VDC, and a capacitance of 220μF. It is typically used for power supply and switching, battery charger, UPS, and backlight inverter in power supplies and as a general-purpose component.

This type of capacitor uses an anode that consists of an aluminum foil covered with oxide film. The oxide film acts as the dielectric of the capacitor, meaning it is the material between the two conducting plates, or electrodes, of the capacitor which blocks the flow of current. The negative and positive terminals of the capacitor are connected to the aluminum rod and the negative aluminum rods are connected to ground. When a current is applied, electrons flow through the anode and cathode and create a bond with the oxide layer on the aluminum. This layer acts the same as any other type of capacitor, collecting charge and storing it until the capacitor is electrically discharged.

An aluminum electrolytic capacitor has a much larger capacitance than other types of capacitors due to the high dielectric constant of the oxide layer. This makes it ideal for applications that require large charge storage, such as power supplies and switching systems. However, these capacitors also have relatively high equivalent series resistance (ESR) due to the oxide layer’s high resistance. This can affect the performance of the device, leading to heat build-up, voltage drops, and damages to the capacitor and other components.

Because of this, aluminum electrolytic capacitors must be properly selected and used for their intended application. The size, voltage, capacitance, and temperature rating of the capacitor must match the application\'s requirements for the device to perform as expected. Additionally, proper maintenance and testing of the capacitor must be done to ensure its functionality and safety.

Conclusion

The B41821A8226M8 aluminum electrolytic capacitor is a versatile component that has many uses. It can store large amounts of charge and is ideal for power supply and switching applications. However, due to the large equivalent series resistance, it must be used with care and properly maintained to ensure that it functions correctly and safely.

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