Ferrites and accessories
E 25/13/7 (EF 25)
Core and accessories
Series/Type:
Date:
B66317, B66208
September 2006, January 2010
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EPCOS AG 2006, 2010. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS’ prior express consent is prohibited.
E 25/13/7 (EF 25)
Core
■
To IEC 61246
■
Delivery mode: single units
B66317
Magnetic characteristics
(per set)
6
l/A
l
e
A
e
A
min
V
e
= 1.1 mm
–1
= 57.5 mm
= 52.5 mm
2
= 51.5 mm
2
= 3020 mm
3
Approx. weight
16 g/set
Ungapped
Material
N30
N27
N87
A
L
value
nH
2900 +30/–20%
1750 +30/–20%
1850 +30/–20%
P
e
2530
1520
1620
< 0.59 (200 mT, 25 kHz, 100 °C)
< 1.60 (200 mT, 100 kHz, 100 °C)
P
V
W/set
Ordering code
B66317G0000X130
B66317G0000X127
B66317G0000X187
Gapped
Material
g
mm
N27,
N87
0.10
r0.02
0.16
r0.02
0.25
r0.02
0.50
r0.05
1.00
r0.05
A
L
value
approx.
nH
489
347
250
151
91
P
e
Ordering code
** = 27 (N27)
**
= 87 (N87)
B66317G0100X1**
B66317G0160X1**
B66317G0250X1**
B66317G0500X1**
B66317G1000X1**
425
302
218
131
79
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).
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
09/06
E 25/13/7 (EF 25)
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:
90
90
K2 (25 °C)
– 0.731
– 0.731
Calculation of saturation current
K3 (25 °C)
139
139
K4 (25 °C)
– 0.847
– 0.796
K3 (100 °C) K4 (100 °C)
129
125
– 0.865
– 0.873
B66317
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 60 nH < A
L
< 570 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
09/06
E 25/13/7 (EF 25)
Accessories
Coil former (magnetic axis horizontal or vertical)
GFR polyterephthalate, UL 94 V-0, insulation class to IEC 60085:
B66208B, X: F max. operating temperature 155 °C, color code black
Valox 420-SE0
®
>
E45329 (M)
@
, GE PLASTICS B V
B66208-W: H max. operating temperature 180 °C, color code black
Rynite FR 530
®
>
E41938 (M)
@
, E I DUPONT DE NEMOURS & CO INC
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 (0.25 mm)
Coil former
Version
Horizontal
Vertical
Sections
1
1
A
N
mm
2
61
61
l
N
mm
50
50
A
R
value
P:
28
28
Pins
10
10
B66208B1110T001
B66208X1010T001
B66208W1010T001
B66208A2010X000
Ordering code
Material:
B66208
Yoke (ordering code per piece, 2 are required)
Horizontal version (B66208B)
27,5
_
0,3
17,3
_
0,25
7,7+0,2
17
_
0,3
0,7±0,1
0,7±0,1
17,8 max.
3,5
_
0,5
2,2±0,1
9,4
_
0,25
7,7+0,2
0,7
9,4
_
0,25
ø1,6+0,1
6.
4 x 5,08 = 20,32
28
_
0,35
1
5
5,08
Please read
Cautions and warnings
and
Important notes
at the end of this document.
10
Hole arrangement
View in
mounting direction
20,32
FEK0352-I
4
09/06
E 25/13/7 (EF 25)
Accessories
Vertical version (B66208W, B66208X)
27,5
_
0,3
B66208
26 max.
3,6
_
0,6
2,2
_
0,15
0,85±0,1
17
9,6
_
0,2
0,85±0,1
17,3
_
0,3
17,3
_
0,3
9,6
_
0,2
0,7
ø 1,6+0,1
7,7+0,2
4 x 5,08 = 20,32
7,7+0,2
5,08
1
Yoke
0.5 max.
5.75±0.2
7.6
_
0.1
9.2
_
0.1
_
0.2
26.1
+0.5
FEK0454-6
Please read
Cautions and warnings
and
Important notes
at the end of this document.
6.
5
10
Hole arrangement
View in mounting direction
12,7
FEK0323-5
5
09/06
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