CZ700LF-160

RFI and EMI - Shielding and Absorbing Materials mainly concern the regular control of electromagnetic radiation levels, which can be achieved through various materials with the properties of shielding and absorbing. CZ700LF-160 is a popular high frequency shielding material, which is widely used to reduce the effects of electrical noise over a broad range of frequencies. This article will analyze the application fields and the working principles of CZ700LF-160.

CZ700LF-160 is a coating developed through mixing carbon black with waterborne acrylic resins. This coating is available in black, gray and white and provides good electrical shielding performance between 9KHz ~ 18GHz. It is suitable for a variety of applications including automotive, consumer electronics, industrial applications, telecommunication equipment, medical electronics and aerospace.

The metal loaded paint’s electrical performance is highly depended on the bonded particles on the surface of the material. Any particle below 0.5 μm size carries the poorest performance. However, CZ700LF-160 is designed to feature particles above 5 μm, so it provides superior shielding performance, especially for EMI. Large particles also provide a better and easier electrical contact, hence the higher shielding performance.

The shielding effectiveness of CZ700LF-160 is measure din terms of attenuation or decibels (dB). Attenuation heavily relies on the environmental conditions such as the wave type, frequency, power level, and the coating thickness. Typically, the shielding effectiveness starts to degrade rapidly at 2-3 ghz when using a single coating layer.

CZ700LF-160 shielding effectiveness can be increased even further by applying multiple layers of the paint. Applying two or more layers of paint can bring almost up to triple or more of the usual shielding effectiveness. At lower frequencies, reflection loss of the material is also improved. Too thick a coating is not desirable because of surface irregularity.

Besides its widely known use in EMI shielding, CZ700LF-160 can also be used for RFI shielding. Radio frequency interference (RFI) covers a wider range of frequencies than EMI does. RFI are mostly caused by random, wide-ranging noises, and is meaningful in the frequencies under 10 MHz. CZ700LF-160 can be used to absorb or dissipate the RFI signals, depending on the material thickness and its application.

CZ700LF-160 is a great choice for RFI and EMI shielding and absorbing. It is suitable for various application fields’ requirements, and provides a high level of attenuation and accuracy. Its particles, size and distrubution offer superior electrical performance and ensures of reliability. With its great cost efficiency, CZ700LF-160 is one of the most favored materials for high quality RFI and EMI shielding.