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CETC the 9th Institute
EMI ferrite materials and cores
【Characteristics of material】：With high power loss in high frequency, high Bs, this kind of materials can be used as noise suppression component in low impedance circuit. The frequency ranges from5~2500MHz.EMI ferrite cores in power supply line, signal line can reduce the interruption of electromagnetic noise, pulse, and static discharge. It can suppress 8~15dB of noise in 100~200MHz range.
Characteristics
Grade |
μi±20% |
αμr×10-6/℃
（20-60℃） |
Bs(mT)
(H=1600A/m) |
θf(℃) |
ρ(Ω·cm) |
WMRF1500 |
1500 |
2~4 |
280 |
>100 |
107 |
WMRF900 |
900 |
8~14 |
300 |
>130 |
107 |
WMRF550 |
550 |
5~35 |
320 |
>150 |
107 |
WMRF250 |
250 |
9~15 |
320 |
>180 |
107 |
WMRF150 |
120 |
9~18 |
350 |
>250 |
107 |
WMRF45 |
45 |
5~15 |
290 |
>300 |
107 |
|
EMI Toroid Cores
| Part No.
|
Dimensions(mm) |
A |
C |
D |
H2.54*1.27*1.27 |
2.54±0.2 |
1.27±0.2 |
1.27±0.2 |
H2.54*1.27*1.57 |
2.54±0.2 |
1.27±0.2 |
1.57±0.2 |
H2.54*1.27*1.00 |
2.54±0.2 |
1.27±0.2 |
1.00±0.2 |
H2.54*1.50*1.27 |
2.54±0.2 |
1.50±0.2 |
1.27±0.2 |
H3.05*1.27*1.2 |
3.05±0.2 |
1.27±0.2 |
1.2±0.2 |
H3.05*1.78 *1.52 |
3.05±0.2 |
1.27±0.2 |
1.2±0.2 |
H3.5*1.78 *1.27 |
3.5±0.2 |
1.78±0.2 |
1.27±0.2 |
H3.5*1.78 *1.78 |
3.5±0.2 |
1.78±0.2 |
1.78±0.2 |
H3.5*1.78 *2.06 |
3.5±0.2 |
1.78±0.2 |
2.06±0.2 |
H4*2*1 |
4.0±0.2 |
2.0±0.2 |
1.0±0.2 |
H4*2*2 |
4.0±0.2 |
2.0±0.2 |
2.0±0.2 |
H5*3*2 |
5.0±0.2 |
3.0±0.2 |
2.0±0.2 |
H5*2.5*2 |
5.0±0.2 |
2.5±0.2 |
2.0±0.2 |
H5*2*2 |
5.0±0.2 |
2.0±0.2 |
2.0±0.2 |
H6*3*2 |
6.0±0.2 |
3.0±0.2 |
2.0±0.2 |
H7*4*3 |
7.0±0.2 |
4.0±0.2 |
3.0±0.2 |
H8*4*4 |
8.0±0.3 |
4.0±0.2 |
4.0±0.2 |
H9*5*3 |
9.0±0.3 |
5.0±0.2 |
3.0±0.2 |
H9*5*4 |
9.0±0.3 |
5.0±0.2 |
4.0±0.2 |
H10*6*3 |
10.0±0.3 |
6.0±0.3 |
3.0±0.2 |
H18*10*6 |
18.0±0.3 |
10.0±0.3 |
6.0±0.3 |
H25*15*13 |
25.0±0.3 |
15.0±0.3 |
13.0±0.3 |
H28*16*13 |
28.0±0.3 |
16.0±0.3 |
13.0±0.3 |
H31*19*8 |
31.0±0.3 |
19.0±0.3 |
8.0±0.3 |
|
EMI Tube Cores
 |
 |
| Part No. |
Dimensions(mm) |
A |
C |
D |
H2.5*0.8*4 |
2.5±0.2 |
0.8±0.2 |
4.0±0.2 |
H2.5*1.2*4 |
2.5±0.2 |
1.2±0.18 |
4.0±0.3 |
H3.5*0.8*6 |
3.5±0.2 |
0.8±0.15 |
6.0±0.3 |
H3.5*0.8*8 |
3.5±0.2 |
0.8±0.15 |
8.0±0.15 |
H3.5*1.0*6 |
3.5±0.2 |
1.0+0.35 |
6.0±0.3 |
H3.5*1.2*8 |
3.5±0.2 |
1.2±0.15 |
8.0±0.3 |
H3.5*1.6*10 |
3.5±0.2 |
1.6±0.15 |
10.0±0.3 |
H3.85*1.85*14.3 |
3.85±0.2 |
1.85±0.15 |
14.3±0.3 |
H4*1.5*10 |
4.0±0.2 |
1.5±10.0 |
10.0±0.3 |
H5*2.3*5 |
5.0±0.2 |
2.3±0.2 |
5.0±0.3 |
H5*2.3*9 |
5.0±0.2 |
2.3±0.2 |
9.0±0.3 |
H6*4*10 |
6.0±0.3 |
4.0±0.2 |
10±0.5 |
H7.6*2.6*18 |
7.6±0.3 |
2.6±0.2 |
18±0.3 |
H8*4*20 |
8.0±0.3 |
4.0±0.3 |
20±0.5 |
H9.5*5*14.5 |
9.5±0.5 |
5.0±0.3 |
14.5±0.4 |
H10*6.35*13.5 |
10±0.35 |
6.35±0.35 |
13.5±0.3 |
H11*6.75*15 |
11.0±0.4 |
6.75±0.2 |
15.0±0.4 |
H12*5.6*15 |
12.0±0.5 |
5.6±0.3 |
15.0±0.5 |
H12*8.5*15 |
12.0±0.5 |
8.5＋0.5 |
15.0±0.5 |
H12*7*15 |
12.0±0.5 |
7.0±0.3 |
15.0±0.5 |
H12.7*5*17.7 |
12.7±0.4 |
5.0±0.3 |
17.7±0.4 |
H14.1*6.28*28.5 |
14.1±0.5 |
6.28±0.28 |
28.5±0.75 |
H14.5*6.35*14.5 |
14.5±0.5 |
6.35±0.3 |
14.5±0.5 |
H15.5*6.92*20 |
15.5±0.5 |
6.92±0.3 |
20.0±0.4 |
H16*8*20 |
16.0±0.5 |
8.0±0.3 |
20.0±0.5 |
H16*9*28.5 (half-round) |
16.0±0.5 |
9.0±0.3 |
28.5±0.5 |
H16*9.1*12 |
16±0.5 |
9.1±0.3 |
12±0.3 |
H16*9.1*28 |
16±0.5 |
9.1±0.3 |
28±0.5 |
H17.5*9.5*28.5 |
17.5±0.5 |
9.5±0.3 |
28.5±0.5 |
H26*13*29.5（half-round) |
26±0.5 |
13±0.3 |
29.5±0.5 |
|
EMI Multi-hole Cores
Part No. |
Dimensions(mm) |
Impedance∣（Ω） |
A |
B |
C |
10MHz |
100MHz |
RF120L6 H6*10H0.8 |
6±0.2 |
10±0.3 |
0.8±0.1 |
180 |
950 |
RF150L6 H6*10H0.8 |
6±0.2 |
10±0.3 |
0.8±0.1 |
500 |
700 |
|
EMI Rod Cores
| Part No. |
Dimensions(mm) |
Materials |
A |
D |
R2.0*15.0 |
2.0±0.1 |
15.0±0.5 |
R120~R3K |
R 2.5*15.0 |
2.5±0.1 |
15.0±0.5 |
R 3.0*18.0 |
3.0±0.15 |
18.0±0.5 |
R 4.0*18.0 |
4.0±0.15 |
18.0±0.5 |
R 5.0*25 |
5.0±0.3 |
25.0±0.5 |
R 5.0*30.0 |
5.0±0.3 |
30.0±0.5 |
R 6.0*25 |
6.0±0.3 |
25.0±0.5 |
R 6.0*30 |
6.0±0.3 |
30.0±0.5 |
R 6.0*50 |
6.0±0.3 |
50.0±0.5 |
R 8.0*30 |
8.0±0.3 |
30.0±0.5 |
R 10*40 |
10.0±0.3 |
40.0±0.5 |
|
Integrated Solid EMI Cores
 |
 |
. |
Fig. No.
|
Dimensions(mm) |
Core weight(g)
|
Typical Impedance(ohms) |
A |
B |
C |
D |
E |
Frequency
25MHz |
Frequency
100MHz |
1 |
3 |
6.50±0.30 |
1.40±0.20 |
3.80±0.20 |
9.00±0.30 |
4.00±0.30 |
0.8 |
43 |
98 |
2 |
1 |
19.00±0.80 |
1.50±0.30 |
6.50±0.40 |
12.00±0.40 |
13.50±0.60 |
5.2 |
39 |
93 |
3 |
1 |
23.80±0.80 |
1.10±0.30 |
6.30±0.30 |
15.00±0.40 |
18.80±0.80 |
8.0 |
46 |
119 |
4 |
1 |
25.00±1.00 |
0.80±0.30 |
3.00±0.30 |
12.00±0.40 |
21.00±0.80 |
3.2 |
33 |
73 |
5 |
2 |
28.00±1.00 |
1.50±0.30 |
7.70±0.50 |
14.60±0.40 |
23.00±0.80 |
11 |
45 |
116 |
6 |
1 |
28.00±1.00 |
1.50±0.30 |
7.70±0.50 |
14.60±0.40 |
23.00±0.80 |
12 |
48 |
119 |
7 |
1 |
29.00±1.00 |
2.00±0.30 |
6.00±0.40 |
10.00±0.40 |
22.00±0.80 |
5.4 |
27 |
84 |
8 |
1 |
29.00±1.00 |
2.20±0.40 |
8.00±0.50 |
15.00±0.40 |
22.00±0.80 |
11 |
43 |
106 |
9 |
1 |
33.00±1.00 |
2.80±0.40 |
7.50±0.40 |
12.00±0.40 |
28.00±1.00 |
8.5 |
31 |
93 |
10 |
1 |
33.50±1.00 |
1.50±0.30 |
6.50±0.40 |
12.00±0.40 |
28.00±1.00 |
8.8 |
33 |
104 |
11 |
1 |
40.00±1.00 |
1.30±0.30 |
6.50±0.40 |
12.00±0.40 |
35.00±1.00 |
11 |
33 |
106 |
12 |
1 |
49.50±1.20 |
1.30±0.30 |
6.50±0.40 |
12.00±0.40 |
44.00±1.00 |
13 |
35 |
108 |
13 |
1 |
57.60±1.20 |
1.30±0.30 |
6.50±0.40 |
12.00±0.40 |
52.00±1.00 |
15 |
38 |
116 |
14 |
3 |
63.50±1.20 |
1.68±0.40 |
12.70±0.40 |
15.00±0.50 |
52.00±1.00 |
52 |
56 |
148 |
|
EMI Split Cylindrical cores
NO. |
Dimensions of the plastic frame (mm) |
Weight of Core(g) |
(Z)in Ohms
Typical Impedance(Ohms) |
A |
B |
C |
D |
E |
Frequency
25MHz |
Frequency
100MHz |
1 |
13.0±1.0 |
5.00±1.00 |
25.0±1.00 |
|
|
2.9 |
72 |
163 |
2 |
16.0±1.0 |
5.30±1.00 |
29.5±1.00 |
|
|
5.3 |
75 |
180 |
3 |
13.0±1.0 |
5.00±1.00 |
25.0±1.00 |
20.0±1.00 |
11.5±1.00 |
5.7 |
98 |
192 |
4 |
18.0±1.0 |
3.50±1.00 |
42.0±1.00 |
|
|
17 |
152 |
285 |
5 |
17.5±1.0 |
6.50±1.00 |
32.5±1.00 |
19.5±1.00 |
|
28 |
183 |
308 |
6 |
15.4±1.0 |
7.00±1.00 |
22.0±1.00 |
17.7±1.00 |
|
5.3 |
57 |
149 |
7 |
19.5±1.0 |
9.00±1.00 |
35.0±1.00 |
28.0±1.00 |
18.0±1.00 |
17 |
118 |
229 |
8 |
20.5±1.0 |
11.00±1.00 |
36.0±1.00 |
32.0±1.00 |
|
18 |
105 |
178 |
9 |
23.0±1.0 |
10.20±1.00 |
32.5±1.00 |
23.0±1.00 |
|
36 |
116 |
302 |
10 |
29.5±1.0 |
13.00±1.00 |
32.5±1.00 |
30.5±1.00 |
|
74 |
158 |
289 |
11 |
30.0±1.0 |
13.00±1.00 |
39.0±1.00 |
34.0±1.00 |
|
57 |
143 |
271 |
12 |
23.4±1.0 |
8.00±1.00 |
16.5±1.00 |
19.8±1.00 |
22.9±1.00 |
10 |
62 |
131 |
14 |
32.5±1.0 |
13.50±1.00 |
15.5±1.00 |
28.5±1.00 |
22.0±1.00 |
18 |
53 |
113 |
|
EMI Split Flat cores
NO. |
Dimensions(mm) |
Weight of Core(g)
|
Typical Impedance(Ohms) |
A |
B |
C |
D |
E |
F |
Frequency
25MHz |
Frequency
100MHz |
1 |
38.00±1.00 |
0.85±0.20 |
6.40±0.40 |
25.40±0.50 |
26.60±1.00 |
|
29 |
130 |
218 |
2 |
45.00±1.00 |
2.00±0.20 |
6.40±0.40 |
15.00±0.50 |
34.00±1.00 |
59.00±1.50 |
28 |
46 |
105 |
3 |
45.00±1.00 |
0.80±0.20 |
6.40±0.40 |
10.00±0.50 |
34.50±1.00 |
|
14 |
38 |
96 |
4 |
71.30±1.50 |
33.1±0.80 |
16.0±0.50 |
52.00±1.50 |
|
|
100 |
93 |
208 |
5 |
63.50±1.20 |
1.70±0.20 |
13.0±0.80 |
28.60±0.50 |
52.00±1.00 |
77.00±1.50 |
100 |
93 |
208 |
6 |
63.50±1.20 |
0.85±0.20 |
6.35±0.40 |
28.60±0.50 |
52.00±1.00 |
|
50 |
85 |
195 |
7 |
76.20±1.50 |
1.70±0.30 |
13.0±0.80 |
28.50±0.70 |
65.30±1.50 |
94.00±2.00 |
102 |
93 |
208 |
8 |
76.20±1.50 |
0.85±0.30 |
6.35±0.30 |
28.501±0.70 |
65.30±1.50 |
|
61 |
85 |
195 |
9 |
84.50±1.50 |
33.1±0.80 |
16.0±0.50 |
64.50±1.50 |
|
|
102 |
93 |
208 |
|
