SD20-221-R

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Fixed inductors refer to the inductors that used as components in electronic circuits. The SD20-221-R is an example of the inductor, which provides a wide range of electrical characteristics to fit different applications. It is primarily categorized as a fixed inductor owing to its wide range of applications.

The SD20-221-R has a relatively simple construction. It includes two coils of copper wire wound together in a small tube made of polymide. The copper wire is insulated with enamel and the polymide tube is filled with an inert gas, like H-gas or nitrogen, which ensures its robustness and stability in operation. Its construction also offers a high quiescent current rating of up to 200mA. The inductance of the SD20-221-R is also quite remarkable, with a value ranging from 10uH up to 1000uH.

The working principle of the SD20-221-R fixed inductor is similar to that of any other inductor. In a closed circuit, when a voltage is applied across it, a current will flow through it which will generate a magnetic field. This magnetic field in turn induces a voltage in the coil which is proportional to the rate of change of the current in the circuit. The voltage induced in the inductor will oppose the applied voltage, resulting in a reduction in the overall current flow. This phenomenon, known as inductance, is the primary characteristic of an inductor.

Besides functioning as an effective inductor, the SD20-221-R can also be used in many different applications. It is often used in power supplies for smooth current control, in DC-DC converters, and in pulse transformers. It can also be used in various transmission applications like antennas, RF amplifiers and transmission lines. Additionally, the SD20-221-R can also be employed in the fabrication of filters, oscillators, and noise suppressors.

The SD20-221-R is an effective inductor with a wide range of electrical characteristics. Its construction is designed to be durable and reliable in operation. Its wide capacity for inductance also makes it suitable for a variety of applications such as power supplies, DC-DC converters, pulse transformers, antennas, RF amplifiers, transmission lines, filters, oscillators, and noise suppressors.

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