FERROXCUBE
DATA SH
EET
A SHEET
E38/8/25
Planar E cores and accessories
Supersedes data of February 2002
2004 Sep 01
Ferroxcube
Planar E cores and accessories
CORES
Effective core parameters of a set of E cores
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
0.272
10200
52.4
194
194
≈
25
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
handbook, halfpage
E38/8/25
38.1
±0.76
30.23 min.
7.6
±0.2
4.45
±0.13
8.26
±0.13
25.4
±0.51
CBW409
R0.64 ref. typ.
R0.81 ref. typ.
R0.64 ref. typ.
Dimensions in mm.
Fig.1 E38/8/25 core half.
Effective core parameters of an E/PLT combination
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 plate
VALUE
0.226
8460
43.7
194
194
≈
18
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
handbook, halfpage
38.1
±0.76
3.81
±0.13
Ordering information for plates
GRADE
3C90
3C92
3C93
3C94
3F3
3F4
TYPE NUMBER
PLT38/25/4-3C90
PLT38/25/4-3C92
PLT38/25/4-3C93
PLT38/25/4-3C94
PLT38/25/4-3F3
PLT38/25/4-3F4
Dimensions in mm.
25.4
±0.51
R0.64 ref. typ.
CBW410
Fig.2 PLT38/25/4.
2004 Sep 01
2
Ferroxcube
Planar E cores and accessories
E38/8/25
Core halves for use in combination with an E core
A
L
measured in combination with a non-gapped core half, clamping force for A
L
measurements, 40
±15
N,
unless stated otherwise.
GRADE
3C90
A
L
(nH)
250
±3%
(1)
315
±3%
(1)
400
±3%
(1)
630
±5%
1000
±10%
7940
±25%
3C92
3C93
3C94
6100
±25%
7250
±25%
250
±3%
(1)
315
±3%
(1)
400
±3%
(1)
630
±5%
1000
±10%
7940
±25%
3F3
250
±3%
(1)
315
±3%
(1)
400
±3%
(1)
630
±5%
1000
±10%
7250
±25%
3F4
250
±3%
(1)
315
±3%
(1)
400
±3%
(1)
630
±5%
1000
±10%
3880
±25%
Note
1. Measured in combination with an equal gapped core half, clamping force for A
L
measurements, 40
±15
N.
µ
e
≈
54
≈
68
≈
86
≈
136
≈
216
≈
1720
≈
1320
≈
1570
≈
54
≈
68
≈
86
≈
136
≈
216
≈
1720
≈
54
≈
68
≈
86
≈
136
≈
216
≈
1570
≈
54
≈
68
≈
86
≈
136
≈
216
≈
840
AIR GAP
(µm)
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
≈
0
≈
0
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
TYPE NUMBER
E38/8/25-3C90-E250-E
E38/8/25-3C90-E315-E
E38/8/25-3C90-E400-E
E38/8/25-3C90-A630-E
E38/8/25-3C90-A1000-E
E38/8/25-3C90
E38/8/25-3C92
E38/8/25-3C93
E38/8/25-3C94-E250-E
E38/8/25-3C94-E315-E
E38/8/25-3C94-E400-E
E38/8/25-3C94-A630-E
E38/8/25-3C94-A1000-E
E38/8/25-3C94
E38/8/25-3F3-E250-E
E38/8/25-3F3-E315-E
E38/8/25-3F3-E400-E
E38/8/25-3F3-A630-E
E38/8/25-3F3-A1000-E
E38/8/25-3F3
E38/8/25-3F4-E250-E
E38/8/25-3F4-E315-E
E38/8/25-3F4-E400-E
E38/8/25-3F4-A630-E
E38/8/25-3F4-A1000-E
E38/8/25-3F4
2004 Sep 01
3
Ferroxcube
Planar E cores and accessories
Core halves for use in combination with a plate (PLT)
A
L
measured in combination with a plate (PLT), clamping force for A
L
measurements, 40
±15
N.
GRADE
3C90
A
L
(nH)
250
±3%
315
±3%
400
±3%
630
±5%
1000
±10%
9250
±25%
3C92
3C93
3C94
7150
±25%
8500
±25%
250
±3%
315
±3%
400
±3%
630
±5%
1000
±10%
9250
±25%
3F3
250
±3%
315
±3%
400
±3%
630
±5%
1000
±10%
8500
±25%
3F4
250
±3%
315
±3%
400
±3%
630
±5%
1000
±10%
4600
±25%
µ
e
≈
45
≈
57
≈
72
≈
113
≈
180
≈
1660
≈
1290
≈
1530
≈
45
≈
57
≈
72
≈
113
≈
180
≈
1660
≈
45
≈
57
≈
72
≈
113
≈
180
≈
1520
≈
45
≈
57
≈
72
≈
113
≈
180
≈830
AIR GAP
(µm)
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
≈
0
≈
0
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
≈
1100
≈
850
≈
650
≈
400
≈
250
≈
0
≈
1100
≈
850
≈
650
≈
400
≈
250
≈0
E38/8/25
TYPE NUMBER
E38/8/25-3C90-A250-P
E38/8/25-3C90-A315-P
E38/8/25-3C90-A400-P
E38/8/25-3C90-A630-P
E38/8/25-3C90-A1000-P
E38/8/25-3C90
E38/8/25-3C92
E38/8/25-3C93
E38/8/25-3C94-A250-P
E38/8/25-3C94-A315-P
E38/8/25-3C94-A400-P
E38/8/25-3C94-A630-P
E38/8/25-3C94-A1000-P
E38/8/25-3C94
E38/8/25-3F3-A250-P
E38/8/25-3F3-A315-P
E38/8/25-3F3-A400-P
E38/8/25-3F3-A630-P
E38/8/25-3F3-A1000-P
E38/8/25-3F3
E38/8/25-3F4-A250-P
E38/8/25-3F4-A315-P
E38/8/25-3F4-A400-P
E38/8/25-3F4-A630-P
E38/8/25-3F4-A1000-P
E38/8/25-3F4
2004 Sep 01
4
Ferroxcube
Planar E cores and accessories
Properties of core sets under power conditions
B (mT) at
GRADE
H = 250 A/m;
f = 10 kHz;
T = 100
°C
≥320
≥320
≥370
≥370
≥320
≥320
≥320
≥320
≥300
≥300
≥250
≥250
f = 100 kHz;
ˆ
B = 100 mT;
T = 100
°C
≤
1.25
≤
1.05
≤
1.0
≤
0.85
≤
1.0
(1)
≤
0.85
(1)
≤
1.0
≤
0.85
≤
1.3
≤
1.1
−
−
CORE LOSS (W) at
f = 100 kHz;
ˆ
B = 200 mT;
T = 100
°C
−
−
≤
6.0
≤
5.0
≤
6.0
(1)
≤
5.0
(1)
≤
6.0
≤
5.0
−
−
−
−
E38/8/25
f = 400 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
−
−
−
−
−
≤
2.0
≤
1.65
−
−
E+E38-3C90
E+PLT38-3C90
E+E38-3C92
E+PLT38-3C92
E+E38-3C93
E+PLT38-3C93
E+E38-3C94
E+PLT38-3C94
E+E38-3F3
E+PLT38-3F3
E+E38-3F4
E+PLT38-3F4
Measured at 140
°C.
1.
Properties of core sets under power conditions (continued)
B (mT) at
GRADE
H = 250 A/m;
f = 10 kHz;
T = 100
°C
≥320
≥320
≥370
≥370
≥320
≥320
≥320
≥320
≥300
≥300
≥250
≥250
f = 500 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
−
−
−
−
−
−
−
−
−
CORE LOSS (W) at
f = 500 kHz;
ˆ
B = 100 mT;
T = 100
°C
−
−
−
−
−
−
−
−
−
−
−
−
f = 1 MHz;
ˆ
B = 30 mT;
T = 100
°C
−
−
−
−
−
−
−
−
−
−
≤
3.0
≤
2.5
f = 3 MHz;
ˆ
B = 10 mT;
T = 100
°C
−
−
−
−
−
−
−
−
−
−
≤
5.0
≤
4.0
E+E38-3C90
E+PLT38-3C90
E+E38-3C92
E+PLT38-3C92
E+E38-3C93
E+PLT38-3C93
E+E38-3C94
E+PLT38-3C94
E+E38-3F3
E+PLT38-3F3
E+E38-3F4
E+PLT38-3F4
2004 Sep 01
5