EFD EPC Cores
DC/DC converters
Inductors
Major materials:
E20, E24, E28, E50, E70, E100

Ordering Code
Material
Core Type
Dimension
E70
EPC
13

Ordering Code
Material
Core Type
Dimension
E20
EFD
17
Dimensions(m/m):
CORES
DIMENSIONS (UNIT:mm)
EFFECTIVE PARAMETERS
A
2B
C1
C2
D
E
2F
Ae(mm)
Ie(mm)
Ve(mm)
EPC13
13.20±0.40
13.20±0.40
4.60±0.20
2.05±0.15
10.7±0.40
5.60±0.15
9.0±0.40
12.5
30.6
382
EPC17
17.50±0.40
17.10±0.40
6.00±0.20
2.80±0.15
14.3±0.10
7.70±0.15
12.1±0.40
22.8
40.2
917
EPC19
19.00±0.50
19.50±0.40
6.00±0.25
2.50±0.15
16.0 Min
8.50±0.15
14.5±0.40
22.7
46.1
1047
EPC25
25.00±0.40
25.00±0.40
8.00±0.20
4.00±0.20
21.0±0.35
11.5±0.20
18.0±0.60
46.4
59.2
2748

Dimensions & Charecteristics:
CORES
DIMENSIONS (UNIT:mm)
EFFECTIVE PARAMETERS
A
B
C
D
G
H
L
FIG
Ae(cm)
Le(cm)
Ve(cm)
EFD17
17.00+/-0.50
8.5+/-0.30
6.00+/-0.30
12.1+/-0.30
7.7+/-0.20
14.3+/-0.40
2.8+/-0.30
1
0.228
4.02
0.917
EFD19
19.40+/-0.50
9.75+/-0.20
6.00+/-0.20
7.25+/-0.20
8.2+/-0.20
16.4+/-0.50
2.4+/-0.15
2
0.23
4.33
0.996
EFD20
20.00+/-0.55
12.5+/-0.40
6.85+/-0.30
10.20+/-0.30
8.9+/-0.20
15.4+/-0.40
3.5+/-0.30
1
0.227
4.61
1.047
EFD25
25.5+/-0.55
9.2+/-0.30
9.10+/-0.30
9.30+/-0.30
11.0+/-0.20
19.2+/-0.50
5.2+/-0.30
1
0.464
5.92
2.748
 

2F., No.58, Yanshou St., Taoyuan City, Taoyuan County 330, Taiwan (R.O.C.)
TEL : 886-3 3785338
FAX : 886-3 3785219
Copyright 2002 E Core Corporation.