28B0268-000

Series:	28
Part Status:	Active
Type:	Round
Design:	Solid
Impedance @ Frequency:	138 Ohm @ 100MHz
Material:	28
Inner Dimension:	0.157" Dia (3.99mm)
Outer Dimension:	0.267" Dia (6.78mm)
Ratings:	--
Mounting Type:	Free Hanging
Length:	0.560" (14.22mm)

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Ferrite Cores - Cables and Wiring

Ferrite cores are widely used in cables and wiring applications. The 28B0268-000 core is a high quality line core designed for EMC applications. This core is designed for easy installation and low loss characteristics. This article will discuss the application fields and working principle of the 28B0268-000 core.

Application Field

Ferrite cores are essential components in many high frequency applications. These cores reduce EMC problems by providing an inductive impedance, which reduce crosstalk, electrical noise, and interference. They also reduce the attenuation of signals travelling along the cable. The 28B0268-000 core specifically features high impedance values and a large center hole for modifying the characteristics of the cable for a range of applications.In power applications, such as for power cables, the ferrite core functions as a high pass filter. This filter helps reduce harmonic current and unwanted signals from interfering with or damaging the device in the application. The 28B0268-000 core is especially useful for controlling EMI from digital and analog signals as well as for power cables.The 28B0268-000 core is also suitable for controlling EMI in telecommunication, video conferencing, and surveillance systems. The core offers excellent thermal and electrical characteristics which make it ideal for reducing noise from high speed digital data cables and preventing interference from degrading the quality of the transmitted signal. The core is also well suited for low-loss signal transmission in instrumentation and medical systems, as well as for power supplies and lightning protection in industrial and electrical engineering applications.

Working Principle

The 28B0268-000 ferrite core is typically used with a coaxial cable. The core is designed to create an inductive impedance when there is a high frequency signal running along it. This inductive impedance is created by the magnetically permeable material inside the core, which causes the signals to be slowed down as they travel along the cable. This allows the signal to be attenuated, reducing interference and crosstalk. The 28B0268-000 also features an air gap that can be adjusted to change the performance of the core at different frequencies. This gap basically works like a capacitor, allowing the inductance of the core to be tuned. By adjusting the gap, the inductance of the core can be tuned so that it is matched to the desired frequency. The core provides excellent performance at higher frequencies, up to 15 MHz.

Conclusion

The 28B0268-000 ferrite core is a high-quality, high performance line core designed for use in EMC applications. The core is suitable for a wide range of applications, such as controlling EMI from digital and analog signals as well as for power cables. The core also features adjustable inductance, allowing it to be matched to the desired frequency. With its excellent thermal and electrical characteristics, the 28B0268-000 core is an ideal solution for cables and wiring applications.

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