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Ferrite Cores
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EER,ETD&EC Cores
Type
Dimensions (mm)
Fig
A
B
C
D
E
F
I
EER2828
1
28.55±0.55
14.0±0.2
11.4±0.25
9.9±0.25
21.8min
9.65±0.25
EER2834
1
28.55±0.55
16.9±0.25
11.4±0.25
9.9±0.25
21.8min
12.5±0.25
EER3435
1
34.2±0.8
17.3±0.2
10.8±0.3
10.8±0.3
26.3±0.7
12.1±0.3
EER3541
1
35.0±0.7
20.9±0.25
11.3±0.4
11.3±0.3
25.6min
14.9±0.3
EER4042
1
40.15±0.65
21.3±0.2
15.0±0.2
14.0±0.25
30.7min
15.3±0.2
EER4244
1
42.0±0.7
22.4±0.25
15.5±0.3
15.5±0.3
29.2min
15.4±0.3
EER5657
1
56.0±1.5
28.4±0.5
24.0±0.5
20.0±0.5
44.0min
20.4±0.5
ETD29
2
29.0±0.8
15.8±0.2
9.5±0.3
9.5±0.3
22.7±0.7
11.0±0.3
ETD34
2
34.2±0.8
17.3±0.2
10.85+0.4-0.35
10.8±0.3
26.3±0.7
12.1±0.3
ETD39
2
39.1±0.9
19.8±0.2
12.55+0.4-0.35
12.5±0.3
30.1±0.8
14.6±0.4
ETD44
2
44.0±1.0
22.3±0.2
14.9±0.5
14.8±0.4
33.3±0.8
16.5±0.4
ETD49
2
48.7±1.1
24.7±0.2
16.4±0.5
16.3±0.4
37.0±0.9
18.1±0.4
ETD59
2
59.8±1.3
31.0±0.2
21.65±0.45
21.65±0.45
44.7±1.1
22.5±0.4
EC41
3+3
40.6±1.0
19.5±0.15
11.6±0.3
11.6±0.3
27.05±0.75
13.9±0.4
EC70
3+3
70.0±1.7
34.5±0.5
16.4±0.5
16.4±0.5
44.7±1.1
22.3±0.9
EC90
3+3
90.0±1.8
45.0±0.65
30.0±1.0
30.0±1.0
70.0±1.5
35.5±0.5
EC120
3+3
120.0±2.0
50.5±0.65
30.0±1.0
30.0±1.0
93.3min
35.5±0.5
EIC120
3+4
120.0±2.0
50.5±0.65
30.0±1.0
30.0±1.0
93.3min
35.5±0.5
15.0±0.65
Type
Core parameter
AL(nH/N2)
C1
Le
Ae
Ve
weight
LP2
LP3
LP3A
(mm-1)
(mm)
(mm2)
(mm3)
(g/prs)
(±25%)
(±25%)
(±25%)
EER2828
0.765
63.6
83.1
5286
28
2700
2700
2600
EER2834
0.908
75.0
82.6
6194
32
2400
2400
2310
EER3435
0.819
79.1
96.6
7645
39
2500
2500
2410
EER3541
0.834
91.2
109.2
9957
52
2600
2600
2510
EER4042
0.613
96.4
157.2
15163
79
3600
3600
3470.00
EER4244
0.471
96.7
205.5
19879
102
4690
4690
4520.00
EER5657
0.381
129.6
340.1
44080
200
5500
5500
5310
ETD29
0.961
70.2
73.0
5122
28
2500
2500
2410
ETD34
0.809
79.1
97.7
7729
40
2780
2780
2650
ETD39
0.740
92.6
125.2
11597
60
3150
3150
3040
ETD44
0.596
103.7
173.8
18022
94
3700
3700
3570
ETD49
0.540
114.4
211.8
24227
124
4140
4140
3990
ETD59
0.383
141.2
368.4
52000
260
5400
5400
5210
EC41
0.738
89.3
121
10800
99
3500
3500
3340
EC70
0.486
138.2
284.3
39286
255
4800
4800
3900
EC90
0.332
216.0
650.7
140541
665
6000min
6000min
EC120
0.314
247.3
786.3
194440
1000
8020min
8020min
EIC120
0.232
184.0
794.0
146310
750
11080min
11080min
Al:1kHz,0.5mA,100Ts
Pc:100kHz,200mT,100°C
100kHz,100mT,100°C(*)
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