FERROXCUBE
DATA SHEET
E56/24/19
E cores and accessories
Supersedes data of September 2004
2008 Sep 01
Ferroxcube
E cores and accessories
CORE SETS
Effective core parameters
handbook, halfpage
E56/24/19
(E75)
56.1
±1
38.1 min.
18.8
±0.25
14.6
±0.13
23.6
±0.25
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
0.320
36000
107
337
337
≈
90
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
18.8
±0.25
CBW070
Dimensions in mm.
Fig.1 E56/24/19 core half.
Core halves
A
L
measured in combination with a non-gapped core half, clamping force for A
L
measurements 60
±20
N, unless stated
otherwise.
GRADE
3C81
A
L
(nH)
100
±5%
(1)
160
±5%
(1)
250
±5%
(1)
315
±5%
(1)
400
±8%
(1)
630
±10%
(1)
9500
±25%
3C90
100
±5%
(1)
160
±5%
(1)
250
±5%
(1)
315
±5%
(1)
400
±8%
(1)
630
±10%
(1)
6900
±25%
3C91
3C92
3C94
3C95
Note
1. Measured in combination with an equal gapped core half.
2008 Sep 01
2
9500
±25%
5200
±25%
6900
±25%
9500
±25%
µ
e
≈
25
≈
40
≈
63
≈
80
≈
101
≈
159
≈
2400
≈
25
≈
40
≈
63
≈
80
≈
101
≈
159
≈
1740
≈
2400
≈
1320
≈
1740
≈
2400
TOTAL AIR GAP
(µm)
≈
7780
≈
4160
≈
2320
≈
1720
≈
1280
≈
740
≈
0
≈
7780
≈
4160
≈
2320
≈
1720
≈
1280
≈
740
≈
0
≈
0
≈
0
≈
0
≈
0
TYPE NUMBER
E56/24/19-3C81-E100
E56/24/19-3C81-E160
E56/24/19-3C81-E250
E56/24/19-3C81-E315
E56/24/19-3C81-E400
E56/24/19-3C81-E630
E56/24/19-3C81
E56/24/19-3C90-E100
E56/24/19-3C90-E160
E56/24/19-3C90-E250
E56/24/19-3C90-E315
E56/24/19-3C90-E400
E56/24/19-3C90-E630
E56/24/19-3C90
E56/24/19-3C91
E56/24/19-3C92
E56/24/19-3C94
E56/24/19-3C95
Ferroxcube
E cores and accessories
Properties of core sets under power conditions
B (mT) at
GRADE
H = 250 A/m;
f = 25 kHz;
T = 100
°C
≥320
≥320
≥320
≥370
≥320
≥320
f = 25 kHz;
ˆ
= 200 mT;
B
T = 100
°C
≤
7.4
≤
3.6
−
−
−
−
f = 100 kHz;
ˆ
B = 100 mT;
T = 100
°C
−
≤
4.8
≤
2.7
(1)
≤
3.6
≤
3.6
−
CORE LOSS (W) at
f = 100 kHz;
ˆ
B = 200 mT;
T = 25
°C
−
−
−
−
−
≤
22.7
f = 100 kHz;
ˆ
B = 200 mT;
T = 100
°C
−
−
≤
16
(1)
≤
22
≤
22
≤
21.6
E56/24/19
(E75)
f = 400 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
−
−
−
3C81
3C90
3C91
3C92
3C94
3C95
Note
1. Measured at 60
°C.
2008 Sep 01
3
Ferroxcube
E cores and accessories
COIL FORMERS
General data for E56/24/19 coil former without pins
PARAMETER
Coil former material
Maximum operating temperature
SPECIFICATION
E56/24/19
(E75)
polyamide (PA6.6), glass reinforced, flame retardant in accordance with
“UL 94V-2”;
UL file number E41938(M)
130
°C,
“IEC 60085”,
class B
handbook, full pagewidth
28.3 max.
26
38
max.
19.1
min.
21.4
CBW071
Dimensions in mm.
Fig.2 E56/24/19 coil former.
Winding data and area product for E56/24/19 coil former without pins
NUMBER OF
SECTIONS
1
MINIMUM
WINDING
AREA
(mm
2
)
222
NOMINAL
WINDING
WIDTH
(mm)
26.1
AVERAGE
LENGTH OF
TURN
(mm)
112
AREA
PRODUCT
Ae x Aw
(mm
4
)
74800
TYPE NUMBER
CP-E56/24/19-1S
2008 Sep 01
4
Ferroxcube
E cores and accessories
General data for 12-pins E56/24/19 coil former
PARAMETER
Coil former material
Maximum operating temperature
Pin material
Resistance to soldering heat
Solderability
SPECIFICATION
E56/24/19
(E75)
Polyamide (PA66), glass reinforced, flame retardant in accordance with
“UL
94V-0”
;UL file number E41938
130
°C,
“IEC 60085”,
class B
copper-zinc alloy (CuZn), tin (Sn) plated
“IEC 60068-2-20”,
Part 2, Test Tb, method 1B: 350
°C,
3.5 s
“IEC 60068-2-20”,
Part 2, Test Ta, method 1: 235
°C,
2 s
handbook, full pagewidth
37.75 max.
19.3 min.
28.19
26.15
37.6
21.4
0.5
4.3 min.
5.1
(1)
0.64
7.6
44.45
33
38.15 max.
2.8
CBW072
(1)
one place only
Dimensions in mm.
Fig.3 E56/24/19 coil former; 12-pins.
Winding data and area product for 12-pins E56/24/19 coil former
NUMBER OF
SECTIONS
1
MINIMUM
WINDING
AREA
(mm
2
)
205
NOMINAL
WINDING
WIDTH
(mm)
26.2
AVERAGE
LENGTH OF
TURN
(mm)
114
AREA
PRODUCT
Ae x Aw
(mm
4
)
69100
TYPE NUMBER
CPH-E56/24/19-1S-12PD-Z
2008 Sep 01
5
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