Nickel zinc soft ferrite material is another kind of high frequency and high frequency soft magnetic material. When the application frequency below 1MHz the performance is not as good as Mn - Zn ferrite, and above 1MHz, due to its high porosity and high resistivity, its performance is much better than the Mn Zn ferrite, very suitable for use in high frequency.

Ferrite broadband made of nickel zinc ferrite materials with devices, frequency of use can be very wide, the lower limit frequency can be up to thousands of thousands of Hertz, upper frequency MHz, greatly expanded the frequency range of soft magnetic materials, the main function is to achieve broadband fan energy transmission and conversion of RF impedance signal range. Because of its wide frequency band, small size, light weight and other characteristics, it has been widely used in radar, television, communications, instrumentation, automatic control, electronic warfare and other fields.

The world has been industrialized production of Ni Zn ferrite in the country, at present, the level of product technology in Japan, Germany, the United States and other countries, is recognized as the highest in the world, Ni Zn broadband RF (core) work frequency is 0.1MHz ~ 1.5GHz, thousands of varieties and specifications. But the domestic starts late, only a few manufacturers in the development of low noise filter and ferrite absorption and suppression components, but the gap with foreign countries, has not been serialized, standardized.

At present, with the rapid development of information network technology, the rapid development of hybrid fiber coaxial cable based on CATV system and closed-circuit television system on network system (HFC), as a comprehensive information network, has significant advantages.

The transformation and construction of the HFC network requires a variety of RF broadband ferrite devices, and the RF broadband ferrite material (core) series is the key magnetic material for the fabrication of ferrite devices. The development of HFC has greatly stimulated the demand for RF broadband ferrite materials and devices. Ni - Zn soft ferrite material is widely used in the HFC broadband network, but also for the electromagnetic interference. One of the most effective, simple and economical methods is to use a filter made of nickel zinc soft magnetic ferrite material and ferrite suppressor. Therefore, in a variety of electronic and electronic circuits using a large number of various characteristics and various shapes of EMI soft ferrite core, in order to meet the requirements of electromagnetic interference and electromagnetic compatibility. The direction of the development of anti electromagnetic interference products and electromagnetic compatible products is the development of all kinds of magnetic cores to high permeability, high frequency, high speed, small size and high density. Today, the use of Ni-Zn and other soft magnetic materials made of ferrite paddle and the conductor of the thick layer of the material and the thickness of the thick film printing and sintering to achieve miniaturization of the surface of the device has been installed, the development of bright future.