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 13/7/4 (EF 12.6)
Core and accessories
Series/Type:
B66305, B66202, B66306, B66414
2
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
To IEC 61246
For miniature transformers
Available with SMD coil former
E cores with high permeability for common-mode
chokes and broadband applications
Delivery mode: single units
Magnetic characteristics (per set)
l/A = 2.39 mm
1
l
e
= 29.6 mm
A
e
= 12.4 mm
2
A
min
= 12.2 mm
2
V
e
= 367 mm
3
Approx. weight 2 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
1000 +30/20%
1900
B66305G0000X130
T46
3600
30%
6839
B66305F0000X146
N27
800 +30/20%
1510
< 0.40 (200 mT, 100 kHz, 100 C)
B66305G0000X127
N87
850 +30/20%
1620
< 0.20 (200 mT, 100 kHz, 100 C)
B66305G0000X187
Material
g
mm
A
L
value approx.
nH
e
Ordering code
N27
0.04
0.01
250
454
B66305G0040X127
FEK0089-9
g
4.5+0.3
0.3
3.7
_
0.3
3.7
_
8.9+0.6
+0.5
0.4
12.6
_
6.5
0.2
_
B66305
Core
E 13/7/4 (EF 12.6)
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: 0.03 mm < s < 1.00 mm
K3, K4: 30 nH < A
L
< 260 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
28.4
0.676
36.5
0.847
33.2
0.865
N87
28.4
0.676
37.5
0.796
32.1
0.873
B66305
Core
E 13/7/4 (EF 12.6)
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.
Yoke
Material:
Stainless spring steel (0.2 mm)
Horizontal version
Coil former
Ordering code
Version
Sections
A
N
mm
2
l
N
mm
A
R
value
Pins
Horizontal
1
11.6
27.2
80.6
8
B66202A1108T001
Vertical
1
11.6
27.2
80.6
6
B66202J1106T001
Yoke (ordering code per piece, 2 are required)
B66202A2010X000
FEK0449-5-E
0.25
16.2
_
14.2
0.2
_
5.1
8
5
1
4
1+0.1
10.16
3 x 3.81 = 11.43
3.81
3.5
0.5
_
10.4 max.
3.9+0.1
0.1
1.6
_
3.9+0.1
8.7 0.2
_
0.2
14.2
_
0.45
_
5.1
0.2
0.2
8.7
_
0.60.1
0.60.1
View in mounting direction
Hole arrangement
B66202
Accessories
E 13/7/4 (EF 12.6)
5
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
Vertical version
Yoke
Hole arrangement
View in mounting direction
FEK0450-8
0.5 max.
3.20.15
3.5
5
_
0.2
13.2
+0.5
B66202
Accessories
E 13/7/4 (EF 12.6)
PDF 
ZIP