EMC Common Mode Choke Cores

Short Description:

Common Mode Chokes (CMC) are used to suppress EMI with a wide spread application of electronic equipments and electromagnetic interference (EMI) in electrical network. 


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1. Introduction 

Common Mode Chokes (CMC) are used to suppress EMI with a wide spread application of electronic equipments and electromagnetic interference (EMI) in electrical network. 

 

2. Characteristics 

High permeability;Excellent frequency dependence of impedance;Wide adjustable range for permeability ;Outstanding performance at unbalanced current.

 

3. Specifications of generally used CMC cores

Core   Dimensions Finished Dimensions Effective Cross Section MeanPath Length lFe (mm) AL at 10kHz Part No.
(mm) (mm) AFe(mm2) (µH)
16*11*6.5 18*9*9.5 11.7 42.4 19 G5-01610
21*15*8 24*12.3*11.5 18.7 56.5 20 G5-02120
25*20*10 27.3*17.5*12.3 19.5 70.6 27 G8-02510
26*19*10 28.5*16.8*13.2 26.2 70.6 24 G5-02620
30*20*10 33*17.5*13.5 39 78.5 48 G8-03010
32*20*10 35*17*13.5 46.8 81.6 56 G8-03210
40*25*10 44*22*15 58.5 102 21 G3-04010
40*25*15 44*22*18 85.5 102 80 G8-04011
65*50*25 68*46.5*28.5 144 181 78 G8-06513

Note :AL = inductance for N = 1 ( tolerance +45%/-25%) Testing condition 1 turn, 0.5V

Common mode inductor core1
Common mode inductor core2

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