ALF20C821DD250

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Aluminum Electrolytic Capacitors have numerous applications in power electronics. A popular type, the ALF20C821DD250, is a plastic encapsulated aluminum electrolytic capacitor that features a twenty nanofarad rated capacitance. It is a radial leaded device that offers a wide operating temperature range which makes it suitable for a variety of applications.

The ALF20C821DD250 is used in switching power supplies and converters, filter circuits, and LED lighting circuits. It also provides a stable performance in high frequency, broadband amplifier circuits. The capacitor is designed to handle a broad range of frequencies, making it suitable for a wide range of applications. The ALF20C821DD250 is also a great choice for pulsed supply applications where its high ripple current capabilities make it ideal for that environment.

The ALF20C821DD250 working principle is based on two electrodes, one permanently separated by an electrolyte. An electric field is generated by the positive plate, creating an attractive force on the negative plate. This force causes the negative plate to move towards the positive plate, which produces a capacitive current. The capacitance of the device increases as the voltage across the plates increases. At a low voltage, the capacitance is typically lower than at a higher voltage, allowing the device to be sensitive to changes in the applied voltage.

The ALF20C821DD250 is designed for direct DC operation with a range of operating temperatures from -55 to +125°C and has a dielectric strength of more than 250 volts. Its useful life is also relatively high, due to the low internal resistance of the device. The device also has very low leakage current, making it suitable for a variety of high-speed switching applications.

The ALF20C821DD250 has a rated capacitance of 20 nanofarads and a voltage rating of 250 volts. Its capacitance range is from 20 nanofarads to 80 nanofarads, making it suitable for applications that require various voltage ranges. The device is RoHS compliant, which means it does not contain hazardous substances. Due to its high performance and low cost, the ALF20C821DD250 is widely used in power electronics.

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