B66379 datasheet(2/3 Pages) EPCOS

2 / 3 page

402 08/01

I Size based on US lam. size E cores

US designation E 187

I E cores with high permeability for common-mode

chokes and broadband applications

I E cores are supplied as single units

Magnetic characteristics (per set)

Σl/A = 1,76 mm–1

= 39,6 mm

= 22,5 mm2

Amin = 22,1 mm2

= 891 mm3

Approx. weight 4,4 g/set

Ungapped

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

Validity range:

K1, K2: 0,10 mm < s < 2,00 mm

K3, K4: 40 nH < AL < 350 nH

Material

AL value

µe

AL1min

W/set

Ordering code

N30

1700 + 30/– 20 % 2380

B66379-G-X130

N27

1050 + 30/– 20 % 1470 720

< 0,18

(200 mT, 25 kHz, 100°C)

B66379-G-X127

N87

1150 + 30/– 20 % 1610 720

< 0,50

(200 mT, 100 kHz, 100°C)

B66379-G-X187

T42

5800

± 30 %

8100

B66379-F-X142

Material

Relationship between

air gap – AL value

Calculation of saturation current

K1 (25 °C)

K2 (25 °C)

K3 (25 °C)

K4 (25 °C)

K3 (100 °C) K4 (100 °C)

N27

46,4

– 0,697

63,3

– 0,847

57,9

– 0,865

N87

46,4

– 0,697

64,1

– 0,796

56,1

– 0,873

B66379

Core

E 19/8/5

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