2

06/13

Please read Cautions and warnings and



Important notes at the end of this document.

■

Size based on US lam. size E cores



US designation E 21

■

Delivery mode: single units

Magnetic characteristics (per set)

= 77 mm



Approx. weight 58 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 < 2.50 mm



Material

nH



e

W/set

Ordering code

N27

3800 +30/–20%

1560

< 2.15 (200 mT, 25 kHz, 100 °C)

B66381G0000X127

N87

4150 +30/–20%

1710

< 5.80 (200 mT, 100 kHz, 100 °C)

B66381G0000X187

N72

4600 +30/–20%

1900

< 1.12 (200 mT, 25 kHz, 100 °C)

B66381G0000X172

Material

g





mm

approx.



nH



e

Ordering code

N27

0.50

0.05

411

166

B66381G0500X127

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)

N27

239

–0.782

378

–0.847

351

–0.865

B66381

Core

E 40/16/12