CDRH125/LDNP-4R7NC

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Fixed inductors have a wide variety of applications, from RF filters to high frequency transformer coils. The CDRH125/LDNP-4R7NC is a type of fixed inductor designed for high current, low noise, and low profile requirements. This article will provide an overview of the CDRH125/LDNP-4R7NC application field and working principle.

Overview of CDRH125/LDNP-4R7NC

The CDRH125/LDNP-4R7NC is a high-performance, low-profile, air core inductor. It is designed for applications in which high current, low noise, and low profile requirements must be satisfied. It comprises a molded plastic bobbin with epoxy resin coated magnet wire. The bobbin provides insulation of the winding and magnetic path. It is designed to operate from DC to MHz frequencies.

The CDRH125/LDNP-4R7NC is available in various sizes and currents. Typical sizes available are 28.59 x 16.76 x 7.47 (LxWxH) and 35.43 x 16.76 x 7.47 (LxWxH). The typical inductance values are between 7.3nH to 18.2nH with a DC current rating up to 5.0A. The self-resonant frequency of the CDRH125/LDNP-4R7NC is typically 30MHz to 400MHz, depending on the size and current.

Applications of CDRH125/LDNP-4R7NC

The CDRH125/LDNP-4R7NC is suitable for a wide range of applications due to its high performance, low profile, and air core construction. It is commonly used in DC-DC converters, line amplifiers, RF chokes, high frequency filter chokes, and switching power supplies.

The CDRH125/LDNP-4R7NC is also suitable for RF applications due to its small size and high self-resonant frequency. It is often used as impedance matching elements for RF amplifier systems, antenna systems, and voice coils. Additionally, due to its air core construction, it is immune to magnetic fields.

Working Principle of CDRH125/LDNP-4R7NC

The CDRH125/LDNP-4R7NC is made up of an air core with windings of insulated high current magnet wire. This air core laminates the energy and prevents it from dissipating, thus increasing the inductance. When the current is applied, an electromagnetic field is created which induces a countervoltage in the wire. This countervoltage is called back EMF and is what limits the current passing through the inductor.

In addition, the CDRH125/LDNP-4R7NC utilizes a high frequency material epoxy coated onto the magnet wire. This coating reduces the resistance of the inductor, allowing for higher currents and better performance. Additionally, the epoxy coating increases the inductor lifetime by protecting the windings from environmental factors.

Conclusion

The CDRH125/LDNP-4R7NC is a high-performance, air core fixed inductor designed for high current, low noise, and low profile requirements. It is commonly used in high current applications and in RF applications due to its high self-resonant frequency. The working principle of the CDRH125/LDNP-4R7NC is based on the back EMF of an electromagnetic field, and an epoxy coating providing insulation and protection. In conclusion, the CDRH125/LDNP-4R7NC is a versatile and reliable fixed inductor for a variety of applications.

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