Ferroxcube
EFD cores and accessories
CORES
Effective core parameters
SYMBOL
Σ(I/A)
V
e
I
e
A
e
A
min
m
PARAMETER
core factor (C1)
effective volume
effective length
effective area
minimum area
mass of core half
VALUE
3.29
171
23.7
7.2
6.5
≈
0.45
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
10.5 0.3
7.65 0.25
4.55
0.15
2.7
0.2
0.1
MGC338
EFD10/5/3
handbook, halfpage
5.2
0.1
3.75
0.15
1.45
0.05
Dimensions in mm.
Fig.1 EFD10/5/3 core half.
Core sets
Clamping force for A
L
measurements, 10
±
5 N.
GRADE
3C90
A
L
(nH)
25
±5%
40
±8%
63
±10%
585
±25%
3C94
25
±5%
40
±8%
63
±10%
585
±25%
3C96
3F3
525
±25%
25
±5%
40
±8%
63
±10%
500
±25%
3F35
3F4
400
±25%
25
±5%
40
±8%
63
±10%
280
±25%
3F45
280
±25%
µ
e
≈
66
≈
105
≈
165
≈
1510
≈
66
≈
105
≈
165
≈
1510
≈
1360
≈
66
≈
105
≈
165
≈
1290
≈
1030
≈
66
≈
105
≈
165
≈
730
≈
730
AIR GAP
(µm)
≈
610
≈
310
≈
170
≈
0
≈
610
≈
310
≈
170
≈
0
≈
0
≈
610
≈
310
≈
170
≈
0
≈
0
≈
570
≈
280
≈
150
≈
0
≈
0
TYPE NUMBER
EFD10/5/3-3C90-A25-S
EFD10/5/3-3C90-A40-S
EFD10/5/3-3C90-A63-S
EFD10/5/3-3C90-S
EFD10/5/3-3C94-A25-S
EFD10/5/3-3C94-A40-S
EFD10/5/3-3C94-A63-S
EFD10/5/3-3C94-S
EFD10/5/3-3C96-S
EFD10/5/3-3F3-A25-S
EFD10/5/3-3F3-A40-S
EFD10/5/3-3F3-A63-S
EFD10/5/3-3F3-S
EFD10/5/3-3F35-S
EFD10/5/3-3F4-A25-S
EFD10/5/3-3F4-A40-S
EFD10/5/3-3F4-A63-S
EFD10/5/3-3F4-S
EFD10/5/3-3F45-S
2008 Sep 01
624
FERROXCUBE [ FERROXCUBE INTERNATIONAL HOLDING B.V. ]
