Ferrites and accessories
E 20/10/6 (EF 20)
Cores and accessories
Series/Type:
Date:
B66311, B66206
May 2017
EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS’ prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
E 20/10/6 (EF 20)
Core
■
To IEC 62317-8
■
Delivery mode: single units
B66311
Magnetic characteristics
(per set)
Σl/A
l
e
A
e
A
min
V
e
= 1.44 mm
–1
= 46.3 mm
= 32.1 mm
2
= 31.9 mm
2
= 1490 mm
3
Approx. weight
7.3 g/set
Ungapped
Material
N30
T46
N27
N87
N97
A
L
value
nH
2150 +30/–20%
7500
±30%
1300 +30/–20%
1470 +30/–20%
1500 +30/–20%
μ
e
2460
8610
1490
1680
1720
< 0.27 (200 mT, 25 kHz, 100 °C)
< 0.75 (200 mT, 100 kHz, 100 °C)
< 0.70 (200 mT, 100 kHz, 100 °C)
P
V
W/set
Ordering code
B66311G0000X130
B66311F0000X146
B66311G0000X127
B66311G0000X187
B66311G0000X197
Gapped
(A
L
values/air gaps examples)
Material
g
mm
N27,
N87
0.09
±0.01
0.10
±0.02
0.15
±0.02
0.17
±0.02
0.25
±0.02
0.50
±0.05
1.00
±0.05
A
L
value
approx.
nH
363
345
250
227
171
103
60
μ
e
Ordering code
** = 27 (N27)
**
= 87 (N87)
B66311G0090X1**
B66311G0100X1**
B66311G0150X1**
B66311G0170X1**
B66311G0250X1**
B66311G0500X1**
B66311G1000X1**
415
395
290
259
195
118
70
The A
L
value in the table applies to a core set comprising one ungapped core (dimension g = 0 mm)
and one gapped core (dimension g > 0 mm).
Other A
L
values/air gaps and materials available on request ─ see Processing remarks on page 8.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
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E 20/10/6 (EF 20)
Core
Calculation factors
(for formulas, see
“E cores: general information”)
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
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
5/17
E 20/10/6 (EF 20)
Accessories
Coil former (magnetic axis horizontal or vertical)
GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 °C), color code black
Valox 420-SE0 [E207780 (M)] SABIC JAPAN L L C
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, 2.1
Pins:
Squared pins. For matching yoke see next page.
Version
Horizontal
Vertical
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
B66206B1110T001
B66206W1110T001
Material:
B66206
Horizontal version
Vertical version
Hole arrangement
View in mounting
direction
Hole arrangement
View in mounting
direction
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
5/17
E 20/10/6 (EF 20)
Accessories
Coil former (with right-angle pins)
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 Processing notes, 2.1
Pins:
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
B66206C1012T001
B66206C1014T001
B66206A2010X000
Stainless spring steel (0.2 mm)
Ordering code
Material:
B66206
Yoke (ordering code per piece, 2 are required)
Figure 1, coil former (12 pins)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
5/17
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