ELJ-NC47NJF Inductors, Coils, Chokes

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Fixed inductors, also known as inductors, are passive components consisting of a coil of wire wrapped around a core, used to store energy in a magnetic field. ELJ-NC47NJF is a non-polarized chip fixed inductor. This article explains the application field and working principle of ELJ-NC47NJF.

Introduction to ELJ-NC47NJF

ELJ-NC47NJF is a non-polarized chip fixed inductor that allows for a relatively high rated current. It has an E-class tolerance of ±3% and a voltage rating of 50V. The inductance range for ELJ-NC47NJF is from 47nH to 500nH. This chip inductor has an operating temperature range of -40°C to 85°C, and is suitable for automotive and industrial applications. ELJ-NC47NJF features an anti-EMI function and is designed to have low DC resistance, making it suitable for use in power supplies and in high-frequency/high-efficiency power switching circuits.

Application Field

Given its low DC resistance, ELJ-NC47NJF is well-suited for power applications including power supplies and high-frequency/high-efficiency power switching circuits. Additionally, the anti-EMI function and wide operating temperature range make it suitable for automotive and industrial applications. ELJ-NC47NJF’s wide inductance range and relatively high rated current make it a good choice for applications including noise suppression filters, common mode filters, high-frequency radiation, pulse circuits, precision filters, impedance matching, and circuit timing.

Working Principle

Much like a capacitor, an inductor stores energy in a magnetic field; however, it works in the opposite way as a capacitor. Where a capacitor stores energy in an electric field, an inductor stores energy in a magnetic field. When electricity flows through the circuits of ELJ-NC47NJF, a magnetic field is produced which causes a voltage to be created and stored in the windings of the chip’s coil. The strength of the magnetic field and the amount of voltage produced depend on the inductance, the amount of current flowing through the circuit, and the rate of change of the current.

The circuit in which ELJ-NC47NJF is used will determine the exact working principle. For example, in the most common application of an inductor, power supplies, the inductor acts as a filter, allowing direct current (DC) to pass while blocking the passage of alternating current (AC). This is done by creating a magnetic field which “short circuits” AC, while allowing DC to pass through. The strength of the inductor’s magnetic field is determined by the inductance and current of the circuit. The higher the inductance is, the stronger the field will be which will block a higher frequency of AC.

In another application, as an inductor used with a capacitor in a low-pass filter, the inductor passes only low-frequency signals. In this circuit, when AC is applied, the current flowing through the inductor takes time to build up due to its inherent inductance. This in turn increases the voltage across the inductor, which is then released across the capacitor. The capacitor then absorbs the energy, allowing only the low-frequency signals to be passed.

Conclusion

ELJ-NC47NJF is a non-polarized chip fixed inductor with an E-class tolerance of ±3% and a voltage rating of 50V. Its inductance range is from 47nH to 500nH, and its operating temperature range is -40°C to 85°C. Its special design gives it low DC resistance, anti-EMI functions, and a relatively high rated current. ELJ-NC47NJF is suitable for a variety of automotive and industrial applications, making it a versatile and reliable chip inductor.

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