B66421-U160-K187

Manufacturer Part NumberB66421-U160-K187
DescriptionEFD 25/13/9 Core
ManufacturerEPCOS [EPCOS]
B66421-U160-K187 datasheet
 


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EFD 25/13/9
Core
I
E core with flattened, lower center leg
for especially flat transformer design
I
For DC/DC converters
I
EFD cores are supplied as single units
Magnetic characteristics (per set)
–1
l/A = 0,98 mm
l
= 57 mm
e
2
A
= 58 mm
e
2
A
= 57 mm
min
3
V
= 3 310 mm
e
Approx. weight 16,6 g/set
Ungapped
Material
A
value
L
nH
N87
2000 + 30/– 20 % 1560 1280
Gapped
Material
A
value
L
nH
N87
160
10 %
125
250
10 %
195
315
10 %
246
The A
value in the table applies to a core set comprising one ungapped core (dimension g = 0) and
L
one gapped core (dimension g > 0).
Calculation factors (for formulas, see “E cores: general information”, page 382)
Material
Relationship between
air gap – A
value
L
K1 (25 °C)
K2 (25 °C)
N87
103
– 0,734
Validity range:
K1, K2: 0,10 mm < s < 1,40 mm
K3, K4: 50 nH < A
A
P
e
L1min
V
nH
W/set
< 1,80
(200 mT, 100 kHz, 100 °C)
g
e
approx. mm
0,55
0,30
0,22
Calculation of saturation current
K3 (25 °C)
K4 (25 °C)
154
– 0,796
< 410 nH
L
512
08/01
B66421
Ordering code
B66421-G-X187
Ordering code
B66421-U160-K187
B66421-U250-K187
B66421-U315-K187
K3 (100 °C) K4 (100 °C)
138
– 0,873

B66421-U160-K187 Summary of contents

  • Page 1

    ... P e L1min V nH W/set < 1,80 (200 mT, 100 kHz, 100 ° approx. mm 0,55 0,30 0,22 Calculation of saturation current K3 (25 °C) K4 (25 °C) 154 – 0,796 < 410 nH L 512 08/01 B66421 Ordering code B66421-G-X187 Ordering code B66421-U160-K187 B66421-U250-K187 B66421-U315-K187 K3 (100 °C) K4 (100 °C) 138 – 0,873 ...

  • Page 2

    EFD 25/13/9 Accessories Coil former Material: GFR thermosetting plastic V-0, insulation class to IEC 60085: B66422-B: F max.operating temperature 155 °C; color code green B66422-W: H max.operating temperature 180 °C; color code black Solderability: to IEC 60068-2-20, test ...

  • Page 3

    Herausgegeben von EPCOS AG Marketing Kommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND  EPCOS AG 2000. Alle Rechte vorbehalten. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser Broschüre und ihres Inhalts ohne ausdrückliche Genehmigung der EPCOS AG nicht gestattet. Mit den ...