05140515| Datasheet

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EFD 30/15/9 Core
I E core with flattened, lower center leg

B66423

for especially flat transformer design
I For DC/DC converters I EFD cores are supplied as single units

Magnetic characteristics (per set)

l/A le Ae A min Ve

= 0,99 mm 1 = 68 mm = 69 mm2 = 69 mm2 = 4 690 mm3

Approx. weight 24 g/set

Ungapped Material N87 AL value nH

A L1min P V nH W/set

Ordering code

2050 + 30/ 20 % 1610 1280

B66423-G-X187 < 2,60 (200 mT, 100 kHz, 100 C)

Gapped Material N87 AL value nH 160 10 % 250 10 % 315 10 %

ue
125 196 246

g approx. mm 0,71 0,38 0,27

Ordering code B66423-U160-K187 B66423-U250-K187 B66423-U315-K187

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).

Calculation factors (for formulas, see "E cores: general information", page 382) Material Relationship between air gap A L value K1 (25 C) N87 Validity range: 125 K2 (25 C) 0,712 Calculation of saturation current K3 (25 C) 176 K4 (25 C) 0,796 K3 (100 C) K4 (100 C) 161 0,873

K1, K2: 0,10 mm < s < 2,00 mm K3, K4: 70 nH < A L < 630 nH

514 08/01