ETC B66423GX187

EFD 30/15/9
Core
B66423
● 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
= 0,99 mm–1
= 68 mm
= 69 mm2
= 69 mm2
= 4 690 mm3
Approx. weight 24 g/set
Ungapped
µe
Material
AL value
AL1min PV
N67
nH
nH
2050 + 30/– 20 % 1610 1280
N87
2050 + 30/– 20 % 1610 1280
Ordering code
W/set
3,00
B66423-G-X167
(200 mT, 100 kHz, 100 ˚C)
2,60
B66423-G-X187
(200 mT, 100 kHz, 100 ˚C)
Gapped
Material
AL value
µe
N67,
N87
nH
160 ± 10 %
250 ± 10 %
315 ± 10 %
125
196
246
g
approx.
mm
0,71
0,38
0,27
Ordering code
** = 67 (N67)
= 87 (N87)
B66423-U160-K1**
B66423-U250-K1**
B66423-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:
556
Relationship between
air gap – AL value
K1 (25 ˚C) K2 (25 ˚C)
125
– 0,712
125
– 0,712
Calculation of saturation current
K3 (25 ˚C)
172
176
K4 (25 ˚C)
– 0,820
– 0,796
K3 (100 ˚C) K4 (100 ˚C)
166
– 0,881
161
– 0,873
K1, K2: 0,10 mm < s < 2,00 mm
K3, K4: 70 nH < AL < 630 nH
Siemens Matsushita Components
EFD 30/15/9
Accessories
B66424
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
Square pins
Yoke
● Material: Stainless spring steel (0,45 mm)
Coil former
Ordering code
Sections
AN
mm2
lN
mm
AR value
µΩ
Pins
1
52,3
56,7
37,3
12
Yoke (ordering code per piece, 2 are required)
B66424-B1012-D1
B66424-B2000
Coil former
Yoke
View A
Mounting holes
Thermosetting plastic
Marking of pin 1
CuSn6, tinned
Siemens Matsushita Components
557