Ferrites and accessories
E 13/7/4 (EF 12.6)
Cores and accessories
Series/Type:
Date:
B66305, B66202, B66306, B66414
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 13/7/4 (EF 12.6)
Core
To IEC 62317-8
For miniature transformers
Available with SMD coil former
E cores with high permeability for common-mode
chokes and broadband applications
■
Delivery mode: single units
■
■
■
■
B66305
Magnetic characteristics
(per set)
Σl/A
l
e
A
e
A
min
V
e
= 2.39 mm
–1
= 29.6 mm
= 12.4 mm
2
= 12.2 mm
2
= 367 mm
3
Approx. weight
2 g/set
Ungapped
Material
N30
T65
T65
T46
N27
N87
A
L
value
nH
1000 +30/–20%
1300
±30%
1900
±30%
3600
±30%
800 +30/–20%
850 +30/–20%
μ
e
1900
2470
3610
6839
1510
1620
< 0.40 (200 mT, 100 kHz, 100 °C)
< 0.20 (200 mT, 100 kHz, 100 °C)
P
V
W/set
Ordering code
B66305G0000X130
B66305G0000X165
B66305F0000X165
B66305F0000X146
B66305G0000X127
B66305G0000X187
Gapped
(A
L
values/air gaps examples)
Material
N27
N87
g
mm
0.04
±0.01
0.5
±0.05
0.04
±0.01
0.13
±0.02
0.30
±0.02
A
L
value approx.
nH
250
45
280
112
64
μ
e
454
85
530
215
122
Ordering code
B66305G0040X127
B66305G0500X127
B66305G0040X187
B66305G0130X187
B66305G0300X187
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 13/7/4 (EF 12.6)
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:
28.4
28.4
K2 (25 °C)
–0.676
–0.676
Calculation of saturation current
K3 (25 °C)
36.5
37.5
K4 (25 °C)
–0.847
–0.796
K3 (100 °C) K4 (100 °C)
33.2
32.1
–0.865
–0.873
B66305
K1, K2: 0.03 mm < s < 1.00 mm
K3, K4: 30 nH < A
L
< 260 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
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E 13/7/4 (EF 12.6)
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
Yoke
Material:
Coil former
Version
Horizontal
Vertical
Sections
1
1
A
N
mm
2
11.6
11.6
l
N
mm
27.2
27.2
A
R
value
μΩ
80.6
80.6
Pins
8
6
B66202B1108T001
B66202B1106T001
B66202A2010X000
Stainless spring steel (0.2 mm)
Ordering code
Material:
B66202
Yoke (ordering code per piece, 2 are required)
Horizontal version
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
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E 13/7/4 (EF 12.6)
Accessories
Vertical version
B66202
Hole arrangement
View in mounting direction
Yoke
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
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