2

06/13

Please read Cautions and warnings and



Important notes at the end of this document.

■

E core with flattened, lower center leg



for especially flat transformer design

■

For DC/DC converters

■

Delivery mode: single units

Magnetic characteristics (per set)

= 34 mm



Approx. weight 2.8 g/set

Ungapped

Gapped

one gapped core (dimension g > 0).

Calculation factors (for formulas, see “E cores: general information” )

Validity range:

K1, K2: 0.10 mm < s < 1.00 mm



Material

nH



e

W/set

Ordering code

N49

600 +30/–20%

1080

< 0.11 ( 50 mT, 500 kHz, 100 °C)

B66413G0000X149

N87

780 +30/–20%

1400

< 0.28 (200 mT, 100 kHz, 100 °C)

B66413G0000X187

N97

820 +30/–20%

1480

< 0.23 (200 mT, 100 kHz, 100 °C)

B66413G0000X197

Material

nH



e

g



approx. mm

Ordering code

N87

100

10%

180

0.17

B66413U0100K187

160

15%

288

0.08

B66413U0160L187

Material

Relationship between



Calculation of saturation current

K1 (25 °C)

K2 (25 °C)

K3 (25 °C)

K4 (25 °C)

K3 (100 °C)

K4 (100 °C)

N87

29.7

–0.676

44.2

–0.796

33.2

–0.873

B66413

Core

EFD 15/8/5