Common Mode Choke Coil
The EMC standard of frequency range of 150KHz-30MHz on restraining the conducted CM EMI are becoming more important in the application. CM inductance & filter capacitor were used to restrain the CM EMI. Ferrite core or common Nanocrystalline core are popular in domestic market as common mode choke cores, but high high-frequency volume and impedance reduction from 150KHz to 30MHz due to the operating frequency limitation makes these cores unworkable.
Product Introduction
The EMC standard of frequency range of 150KHz-30MHz on restraining the conducted CM EMI are becoming more important in the application. CM inductance & filter capacitor were used to restrain the CM EMI. Ferrite core or common Nanocrystalline core are popular in domestic market as common mode choke cores, but high high-frequency volume and impedance reduction from 150KHz to 30MHz due to the operating frequency limitation makes these cores unworkable. In this case , we developed advanced higher property Nano-crystalline common mode choke cores as solution for EMC common mode choke cores requirement, and were applied to the EMC of switch power modules, UPS power supply, communication power supply, inverter, transducer, home appliance.
Product performance:
• High initial permeability: High saturate induction density: 2-3 times higher than ferrite core, not easy be saturated in high current fields
• Good frequency flexibility-better controlling to the noise in different frequencies.
• Excellent temperature stability-with the serving temperature from -55 to 130"C for a long time. The Curie temperature is higher. The properties are not changeable easily even in unstable working temperature.
• Higher anti-unbalanced-current: Specially made Nano-crystalline EMC Common Mode Choke Cores can guarantee 104 permeability when resisting 80A/m unbalanced current bias field.
Sunbow common mode inductor is made of nanocrystalillne core with high saturation magnetic flux density and magnetic permeability, which is beneficial to the miniaturization of the device. It has wide frequency characteristics ,excellent stability and mainly used to suppress common mode noise in the circuit. Widely used in various EMC applications such as precision equipment protection, grid EMI harmonic filtering.
Application
Inverter welding machine, electrostatic precipitator, high frequency inductor heating, variable frequency drive, inverter air conditioner, flat panel TV, photovoltaic, and electric car.
Personal computers and peripherals
Household appliances such as TV and air conditioners
Digital equpments.
Switching power sources.
Frequency Converter.
New energy vehicles.
Photovoltaic and wind power
• Protection for accuralc clcctronic equipment
• Common mode jam filtering for EMI power
• Common filtering in single phase or three phase circuit
Performance features
The common mode choke coil has a higher impedance in the MHz band, which contributes to effective noise reduction in the AM radio band.
A type
B type
C type
Product Selction Table
Standard Specification
For additional information and immediate assistance with your requirements, designs and applications, please call 021-63306968 Or send email to :sales@sunbowgroup.com
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