B66315 datasheet(1/2 Pages) EPCOS

Part #	B66315

Description	E 25,4/10/7 Core

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Manufacturer	EPCOS [EPCOS]

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415 08/01

I Size based on US lam. size E cores

US designation E2425

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 = 1,27 mm–1

le

= 49,2 mm

Ae

= 38,8 mm2

Amin = 38,4 mm2

Ve

= 1 910 mm3

Approx. weight 9,6 g/set

Ungapped

Gapped

The AL 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)

Validity range:

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

K3, K4: 50 nH < AL < 500 nH

Material

AL value

nH

µe

AL1min

nH

PV

W/set

Ordering code

N30

2700 + 30/– 20 % 2720

B66315-G-X130

N27

1500 + 30/– 20 % 1510 1240

< 0,36

(200 mT, 25 kHz, 100 °C)

B66315-G-X127

N87

1670 + 30/– 20 % 1690 1240

< 1,00

(200 mT, 100 kHz, 100 °C)

B66315-G-X187

T42

8500

± 30 %

8570

B66315-F-X142

Material

g

mm

AL value approx.

nH

µe

Ordering code

N27

0,50

± 0,05

122

123

B66315-G500-X127

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

75

– 0,707

106

– 0,847

97

– 0,865

N87

75

– 0,707

106

– 0,796

94

– 0,873

B66315

Core

E 25,4/10/7

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