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Ferrite Cores
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EFD Cores
Dimensions
Type
Fig
A
B
C
D
E
F
G(Ref)
H
EFD10
1
10.5±0.3
5.2±0.1
2.7±0.1
4.6±0.2
7.65±0.3
3.75±0.15
0.2
1.5±0.2
EFD11.8
2
11.8±0.25
6.05±0.2
4.7±0.15
4.5±0.15
8.7±0.3
4.55±0.15
2.9±0.1
EFD12
1
12.5±0.3
6.2±0.2
3.5±0.15
5.4±0.2
9.0±0.3
4.5±0.2
0.2
2.0±0.2
EFD13
2
13.5±0.3
8.0±0.2
3.0±0.2
6.0±0.15
10.5±0.3
4.65±0.15
1.5±0.1
EFD13A
2
13.4±0.3
11.2±0.2
4.5±0.2
5.3±0.15
9.8±0.3
8.6±0.15
3.0±0.1
EFD15
1
15.0±0.5
7.5±0.2
4.7±0.2
5.3±0.3
11.0±0.4
5.5±0.3
0.2
2.4±0.2
EFD16.5
3
16.55±0.25
19.4±0.15
4.45±0.1
5.8±0.1
11.4min
16.45+0.2-0.15
2.45±0.15
EFD20
1
20.0±0.6
10.0±0.3
6.65±0.2
8.9±0.2
15.4±0.5
7.7±0.3
0.15
3.6±0.2
EFD21
2
21.2±0.4
11.8±0.3
5.9±0.2
9.4±0.2
15.8min
9.2±0.3
3.3±0.2
EFD25
1
25.0±0.7
12.5±0.3
9.1±0.3
11.4±0.3
18.7±0.7
9.3±0.3
0.6
5.2±0.3
EFD30
1
30.0±0.9
15.0±0.3
9.1±0.3
14.6±0.4
22.4±0.8
11.2±0.3
0.8
4.9±0.3
EFD30.2
1
30.2±0.4
15.2±0.15
9.1±0.2
14.6±0.25
22.4±0.55
11.2±0.3
0.75
4.9±0.15
Type
Core parameter
AL(nH/N2)
C1
Le
Ae
Ve
weight
LP3
LP3A
(mm-1)
(mm)
(mm2)
(mm3)
(g/prs)
(±25%)
(±25%)
EFD10
3.3
23.7
7.20
171
0.9
500
470
EFD11.8
2.01
29.7
14.8
440
1.6
900
870
EFD12
2.5
28.5
11.4
325
1.7
700
670
EFD13
3.07
38.7
12.6
487
2.5
630
600
EFD13A
2.69
45.52
16.94
771
3.0
550
520
EFD15
2.27
34.0
15.0
510
2.80
700
670
EFD16.5
0.492
22.8
46.3
1056
24.0
3800
3630
EFD20
1.52
47.0
31.0
1460
7.0
1150
1100
EFD21
1.7
53.1
31.3
1659
9.6
1100
1050
EFD25
0.98
57
58
3300
16
2000
1930
EFD30
0.98
68
69
4700
24
1900
1830
EFD30.2
1.0
69
69
4760
26
1900
1830
Al:1kHz,0.5mA,100Ts
Pc:100kHz,200mT,100°C
100kHz,100mT,100°C(*)
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