S0402-22NF1S

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Fixed inductors, sometimes referred to as chokes, are inductors with fixed values, designed for specific tasks. One example is S0402-22NF1S, which is a surface mount device designed for use in high frequency switching circuits. This inductor type is designed to reduce noise, improve signal integrity, and reduce harmonic noise.

Application Field

The S0402-22NF1S is able to be used in systems in which there are significant levels of RF noise and EMI. This might be because the inductor is designed to filter the unwanted noise, as opposed to simply damping it out. With a high-Q design and low levels of core loss, the device is able to handle high frequency applications with a wide level of signal-to-noise ratio. In addition, the S0402-22NF1S provides superior temperature stability, superior ruggedness, and reliable operation at high temperatures. This makes the device highly suitable for use in power supplies and other applications requiring smooth and reliable operation, as well as high-performance filtering and/or noise-reduction.

Working Principle

The S0402-22NF1S includes a core that is generally made of ceramic and a coil of magnet wire that is wound around it. The core is generally designed to have a low magnetic permeability so as to reduce the power loss in the inductor. The core also helps maintain the inductance value. The total inductance value of the inductor is a function of the number of turns of the magnet wire and the core material\'s magnetic permeability. The heavier the magnet wire turns, the higher the inductance value and the higher the RF noise cancelling capability.

When an AC power is applied to the wires, the core produces a magnetic field that opposes the applied field. This opposes a change in the current flow, creating a \'back-EMF\' that counteracts the applied AC current. This is the basis of inductance and is what makes the S0402-22NF1S effective at reducing noise, improving signal integrity and reducing harmonic noise.

The combination of the high Q design, low core loss, and excellent temperature stability mean that the device is able to handle higher frequency applications with a wide range of signal-to-noise ratio. This makes it a great option for use in applications requiring smooth, reliable operation and high-performance filtering and/or noise-reduction.

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