ETC B66421GX187

EFD 25/13/9
Core
B66421
● E core with flattened, lower center leg
for especially flat transformer design
● For DC/DC converters
● EFD cores are supplied as single units
Magnetic characteristics (per set)
Σl/A
le
Ae
Amin
Ve
= 0,98 mm–1
= 57 mm
= 58 mm2
= 57 mm2
= 3 310 mm3
Approx. weight 16,6 g/set
Ungapped
µe
Material
AL value
AL1min PV
N67
nH
nH
2000 + 30/– 20 % 1560 1280
N87
2000 + 30/– 20 % 1560 1280
Ordering code
W/set
2,10
B66421-G-X167
(200 mT, 100 kHz, 100 ˚C)
1,80
B66421-G-X187
(200 mT, 100 kHz, 100 ˚C)
Gapped
Material
AL value
µe
N67,
N87
nH
160 ± 10 %
250 ± 10 %
315 ± 10 %
125
195
246
g
approx.
mm
0,55
0,30
0,22
Ordering code
** = 67 (N67)
= 87 (N87)
B66421-U160-K1**
B66421-U250-K1**
B66421-U315-K1**
The AL value in the table applies to a core set comprising one ungapped core (dimension g = 0) and
one gapped core (dimension g > 0).
Calculation factors (see page 423 for formulas)
Material
N67
N87
Validity range:
554
Relationship between
air gap – AL value
K1 (25 ˚C) K2 (25 ˚C)
103
– 0,734
103
– 0,734
Calculation of saturation current
K3 (25 ˚C)
150
154
K4 (25 ˚C)
– 0,820
– 0,796
K3 (100 ˚C) K4 (100 ˚C)
142
– 0,881
138
– 0,873
K1, K2: 0,10 mm < s < 1,40 mm
K3, K4: 50 nH < AL < 410 nH
Siemens Matsushita Components
EFD 25/13/9
Accessories
B66422
Coil former
Material:
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
F max.operating temperature 155 ˚C), color code green
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 page 156
Squared pins
Yoke
● Material: Stainless spring steel (0,4 mm)
Coil former
Ordering code
Sections
AN
mm2
lN
mm
AR value
µΩ
Pins
1
40,7
50
42,3
10
B66422-B1010-D1
Yoke (ordering code per piece, 2 are required)
B66422-B2000
Coil former
Yoke
25±0,2
View A
Mounting holes
13,1_ 0,15
1
2
3
4
Montagelochung
5
10
6
9
8
7
1
6
Duroplastplastic
Thermosetting
4 x 5 = 20
Marking
of pinfür1 Stift 1
Markierung
5,5+0,2
18 _ 0,2
1,6 _ 0,1
16,4 min.
12 _ 0,2
1,7
3,5±0,2 12,8 max.
18 _ 0,25
11,7+0,2
5
5
6,9 _ 0,1
10
22,5
26 _ 0,3
ø 1,3+0,1
0,6
CuSn6,tinned
verzinnt
CuSn6,
Siemens Matsushita Components
FEK0330-M
555