for especially flat transformer design

Magnetic characteristics (per set)

= 57 mm

Approx. weight 16,6 g/set

Ungapped

Gapped

one gapped core (dimension g > 0).

Calculation factors (for formulas, see “E cores: general information”, page 382)

Validity range:

K1, K2: 0,10 mm < s < 1,40 mm

Material

nH

nH

W/set

Ordering code

N87

2000 + 30/– 20 % 1560 1280

< 1,80

(200 mT, 100 kHz, 100 °C)

B66421-G-X187

Material

nH

g

approx. mm

Ordering code

N87

160

± 10 %

125

0,55

B66421-U160-K187

250

± 10 %

195

0,30

B66421-U250-K187

315

± 10 %

246

0,22

B66421-U315-K187

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

103

– 0,734

154

– 0,796

138

– 0,873

B66421

Core

EFD 25/13/9