E 20/10/6 (EF 20)
Core
I
In accordance with IEC 61246
I
E cores are supplied as single units
B66311
Magnetic characteristics
(per set)
Σ
l/A
l
e
A
e
A
min
V
e
= 1,44 mm
–1
= 46,3 mm
= 32,1 mm
2
= 31,9 mm
2
= 1 490 mm
3
Approx. weight
7,3 g/set
Ungapped
Material
N30
N27
N87
A
L
value
nH
µ
e
A
L1min
P
V
nH
W/set
Ordering code
B66311-G-X130
2150 + 30/– 20 % 2460
1300 + 30/– 20 % 1490 1090
1470 + 30/– 20 % 1680 1090
< 0,27
B66311-G-X127
(200 mT, 25 kHz, 100 °C)
< 0,75
B66311-G-X187
(200 mT, 100 kHz, 100 °C)
Gapped
Material
g
mm
N27,
N87
0,09
±
0,01
0,17
±
0,02
0,25
±
0,02
0,50
±
0,05
A
L
value
approx.
nH
363
227
171
103
µ
e
Ordering code
** = 27 (N27)
**
= 87 (N87)
B66311-G90-X1**
B66311-G170-X1**
B66311-G250-X1**
B66311-G500-X1**
415
259
195
118
The
A
L
value in the table applies to a core set comprising one ungapped core (dimension
g
= 0) and
one gapped core (dimension
g
> 0).
403
08/01
E 20/10/6 (EF 20)
Core
Calculation factors
(for formulas, see
“E cores: general information”,
page 382)
Material
Relationship between
air gap –
A
L
value
K1
(25 °C)
N27
N87
Validity range:
61,6
61,6
K2
(25 °C)
– 0,737
– 0,737
Calculation of saturation current
K3
(25 °C)
88,1
88,5
K4
(25 °C)
– 0,847
– 0,796
K3
(100 °C)
K4
(100 °C)
80,9
78,4
– 0,865
– 0,873
B66311
K1, K2:
0,05 mm <
s
< 1,50 mm
K3, K4:
50 nH <
A
L
< 430 nH
404
08/01
E 20/10/6 (EF 20)
Accessories
Coil former (magnetic axis horizontal or vertical)
Material:
GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 °C), color code black
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s
Winding:
see
“Processing Notes”,
page 159
Squared pins
For matching yoke see next page
Figure
1
2
Sections
1
1
A
N
mm
2
34
34
l
N
mm
41,2
41,2
A
R
value
µΩ
42
42
Pins
10
10
Ordering code
B66206-A1110-T1
B66206-J1110-T1
B66206
Figure 1, horizontal version
22
_
0,3
13,9
_
0,25
6,1+0,15
Figure 2, vertical version
0,6±0,1
13,7
_
0,25
0,6±0,1
16,8 max.
6,1+0,2
3,5
_
0,5
2
_
0,1
7,6
_
0,15
0,45
15,24
FEK0105-U
1
5
4 x 3,81 = 15,24
3,81
1+0,1
7,6
_
0,15
6
10
21,2
_
0,3
Hole arrangement
View in mounting
direction
Hole arrangement
View in mounting
direction
405
08/01
E 20/10/6 (EF 20)
Accessories
Coil former (with right-angle pins)
Material:
GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 °C), color code black
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235°C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s
Winding:
see
“Processing Notes”,
page 159
Squared pins
Yoke
Material:
Coil former
Figure
1
2
3
Sections
1
1
A
N
mm
2
34
34
l
N
mm
41,2
41,2
A
R
value
µΩ
42
42
Pins
12
14
B66206-C1012-T1
B66206-C1014-T1
B66206-A2010
Stainless spring steel (0,2 mm)
Ordering code
B66206
Yoke (ordering code per piece, 2 are required)
Figure 1, coil former (12 pins)
13,9
_
0,2
6,1+0,2
13,4
_
0,15
13,9
_
0,2
6,1+0,2
3,2
_
0,2
0,3
0,45
Hole arrangement
View in mounting direction
21,5
_
0,2
7,5
_
0,2
ø1,1+0,1
7,5
_
0,2
12,2+0,25
23,5
_
0,3
1
8
15,24
17,78
FEK0394-T
406
08/01
7 x 2,54 = 17,78
2,54
9
12
E 20/10/6 (EF 20)
Accessories
Figure 2, coil former (14 pins)
13,9
_
0,2
6,1+0,2
13,4
_
0,15
B66206
13,9
_
0,2
6,1+0,2
0,45
Hole arrangement
View in mounting direction
21,5
_
0,3
7,5
_
0,2
ø1,1+0,1
3,2
_
0,2
5 x 3,81 = 19,05
7,5
_
0,2
12,2+0,25
23,5
_
0,3
3,81
1
8
15,24
17,78
FEK0395-2
Figure 3, Yoke
0,5 max.
2,8±0,15
4,5±0,15
7,5
_
0,1
6
_
0,1
_
0,2
20,9
+0,5
13±0,2
FEK0108-J
407
08/01
7 x 2,54 = 17,78
0,635
2,54
9
14
FPGA/CPLD
