S0402-4N7F2S

Fixed inductors, sometimes known as chokes, are electric components built to add inductance into a circuit. The S0402-4N7F2S fixed inductor is a miniature SMD resistor used to filter out noise from power supplies and other sources in electronic circuits. This inductor can help reduce the noise levels, allowing more accurate signal readings, and can be used for a variety of applications.

Applications

The S0402-4N7F2S is most commonly used in power supplies, where it reduces the amount of transient noise seen on output voltage rails. This inductor also improves power supply stability and can help reduce the amount of interference radiation emitted by the power supply. Additionally, this choke inductor is used in DC-DC converters, PI and LDO filter circuits, RF circuits as well as in audio circuits. It is suitable for a wide range of electronic devices and can also be used in motor control circuits to reduce the amount of electrical noise on the power lines and reduce the risk of electric shock.

Working principle

The S0402-4N7F2S is a non-polarized, fixed inductor of 2.7 microhenry nominal value. Its purpose is to limit the amount of noise, or interference, from entering and leaving the circuit. The inductor consists of a magnetic core, usually of ferrite, wrapped with several turns of insulated copper wire. When a current passes through the inductor, the magnetic field that’s generated stores energy in the form of a magnetic field. The more current that passes through the inductor, the greater the inductance. The stored energy acts as a filter to noise, which is then dispersed by the inductor and not sent back into the circuit.

Conclusion

The S0402-4N7F2S fixed inductor is widely used in many different electronic devices to filter out noise and interference from power supplies and other sources. It helps to improve power supply stability, reduce the amount of interference radiation emitted by the device, and reduce the risk of electric shock. Its small size and low cost make it a great choice for a variety of applications, including power supplies, DC-DC converters, PI and LDO filter circuits, audio circuits, RF circuits, and motor control circuits where noise reduction is necessary.