Data Sheet
Data Sheet
Date:
September 2006
EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS' prior express consent is prohibited.
Ferrites and accessories
E 20/10/6 (EF 20)
Core and accessories
Series/Type:
B66311, B66206
2
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
To IEC 61246
Delivery mode: single units
Magnetic characteristics (per set)
l/A = 1.44 mm
1
l
e
= 46.3 mm
A
e
= 32.1 mm
2
A
min
= 31.9 mm
2
V
e
= 1490 mm
3
Approx. weight 7.3 g/set
Ungapped
Gapped
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).
Material
A
L
value
nH
e
P
V
W/set
Ordering code
N30
2150 +30/20%
2460
B66311G0000X130
N27
1300 +30/20%
1490
< 0.27 (200 mT, 25 kHz, 100 C)
B66311G0000X127
N87
1470 +30/20%
1680
< 0.75 (200 mT, 100 kHz, 100 C)
B66311G0000X187
Material
g
mm
A
L
value
approx.
nH
e
Ordering code
** = 27 (N27)
**
= 87 (N87)
N27,
0.09
0.01
363
415
B66311G0090X1**
N87
0.17
0.02
227
259
B66311G0170X1**
0.25
0.02
171
195
B66311G0250X1**
0.50
0.05
103
118
B66311G0500X1**
FEK0103-D
g
7+0.3
0.4
5.9
_
0.3
5.9
_
14.1+0.6
10.1
0.3
_
20.4 0.8
_
B66311
Core
E 20/10/6 (EF 20)
3
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
Calculation factors (for formulas, see "E cores: general information")
Validity range:
K1, K2: 0.05 mm < s < 1.50 mm
K3, K4: 50 nH < A
L
< 430 nH
Material
Relationship between
air gap A
L
value
Calculation of saturation current
K1 (25 C)
K2 (25 C)
K3 (25 C)
K4 (25 C)
K3 (100 C)
K4 (100 C)
N27
61.6
0.737
88.1
0.847
80.9
0.865
N87
61.6
0.737
88.5
0.796
78.4
0.873
B66311
Core
E 20/10/6 (EF 20)
4
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
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
Valox 420-SE0
[E45329 (M)], GE PLASTICS B V
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 Data Book 2007, chapter "Processing notes, 2.1"
Squared pins. For matching yoke see next page.
Horizontal version
Vertical version
Version
Sections
A
N
mm
2
l
N
mm
A
R
value
Pins
Ordering code
Horizontal
1
34
41.2
42
10
B66206A1110T001
Vertical
1
34
41.2
42
10
B66206J1110T001
FEK0105-U
10
6
5
1
6,1+0,15
13,9 0,25
_
0,3
22
_
16,8 max.
3,5
0,5
_
6,1+0,2
_
2
0,1
0,60,1
13,7 0,25
_
0,60,1
0,15
_
7,6
1+0,1
3,81
4 x 3,81 = 15,24
_
7,6 0,15
_
21,2
0,3
0,45
15,24
Hole arrangement
View in mounting
direction
Hole arrangement
View in mounting
direction
B66206
Accessories
E 20/10/6 (EF 20)
5
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
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
Pocan B4235
[E245249 (M)], LANXESS AG
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 Data Book 2007, chapter "Processing notes, 2.1"
Squared pins.
Yoke
Material:
Stainless spring steel (0.2 mm)
Figure 1, coil former (12 pins)
Coil former
Ordering code
Figure
Sections
A
N
mm
2
l
N
mm
A
R
value
Pins
1
1
34
41.2
42
12
B66206C1012T001
2
1
34
41.2
42
14
B66206C1014T001
3
Yoke (ordering code per piece, 2 are required)
B66206A2010X000
FEK0394-T
13,9
0,2
21,5
_
0,2
_
6,1+0,2
0,2
3,2
_
6,1+0,2
_
13,9
0,2
0,45
7,5 0,2
_
0,3
23,5
_
12,2+0,25
0,15
13,4
_
_
7,5
0,2
0,3
7 x 2,54 = 17,78
2,54
15,24
17,78
View in mounting direction
Hole arrangement
1,1+0,1
12
9
8
1
B66206
Accessories
E 20/10/6 (EF 20)
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