ELJ-RF56NGFB Inductors, Coils, Chokes

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Fixed inductors, also known as chokes, are ubiquitous components in electrical circuits, ranging in application from simple noise filters in consumer electronics to complex resonant circuits in RF communication and high-voltage power supplies. The ELJ-RF56NGFB is a common type of fixed inductor, often used in a wide variety of RF and power applications. This article will explain the application field and working principle of the ELJ-RF56NGFB.

Overview of the ELJ-RF56NGFB

The ELJ-RF56NGFB (also known as the Panasonic RF-56NGFB series) is a series of miniature, saturable-core SMD inductors from Panasonic. It is characterized by a maximum rated inductance of up to 33uH, with an 8.2mΩ max DC resistance. The ELJ-RF56NGFB is typically offered in a 3-pin, 0603-sized package, and is rated for operation up to a maximum frequency of 30MHz.

Application Field of the ELJ-RF56NGFB

The ELJ-RF56NGFB series is often used in cellular phones, cordless phones, and other wireless communication devices. It is capable of providing high-density, high-performance inductors with a small footprint, making it ideal for these types of devices. Additionally, due to its low DC resistance, it is often used in power applications, particularly for DC-DC Converters, where its low impedance helps minimize power losses.

In addition, the ELJ-RF56NGFB is also used in RF and microwave communication applications, such as antenna tuners, filters, and harmonic generators. Its high frequency rating and precise inductance values make it suitable for many of these types of applications.

Working Principle of the ELJ-RF56NGFB

The ELJ-RF56NGFB series is a type of saturable-core inductor. This type of inductor utilizes a ferrite core that becomes saturated as the current through the device increases. As the core becomes saturated, the inductance of the device decreases. This saturation effect is what makes the device suitable for many RF and power applications.

In a DC-DC converter application, for example, the ELJ-RF56NGFB can be used in the primary side of the converter, where the current signals are much smaller. As the current increases, the inductance of the device decreases, allowing for a more efficient conversion.

In RF and microwave applications, the device can be used to create more complex circuits such as filters and oscillators. Due to its low impedance characteristics, it is ideal for use in these types of circuits. Additionally, since it is a saturable-core inductor, it is possible to change the inductance of the device by changing the core material. This makes it possible to use the same device in multiple frequency bands, making it ideal for use in wireless communication systems.

Conclusion

The ELJ-RF56NGFB series is a type of fixed inductor, often used for RF and power applications. Its high frequency rating and precise inductance values make it suitable for use in antenna tuners, filters, and harmonic generators. Additionally, its low DC resistance makes it ideal for use in DC-DC converters, where it helps minimize power losses. Finally, its saturable-core design makes it possible to change the inductance of the device to achieve multiple frequency bands in wireless communication applications.

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