3B7 datasheet(2/4 Pages) FERROXCUBE

2 / 4 page

2008 Sep 01

Ferroxcube

Material specification

3B7

3B7 SPECIFICATIONS

A low frequency filter material optimized for

frequencies up to 0.1 MHz.

SYMBOL

CONDITIONS

VALUE

UNIT

µi

°C; ≤10 kHz;

0.25 mT

2300

±20%

B25

°C; 10 kHz;

1200 A/m

≈ 440

100

°C; 10 kHz;

1200 A/m

≈ 320

tan

δ/µi

°C; 100 kHz;

0.25 mT

≤ 5 × 10−6

°C; 500 kHz;

0.25 mT

≈ 25 × 10−6

°C; 1 MHz; 0.25 mT

≈ 120 × 10−6

°C; 10 kHz; 0.25 mT ≤ 4.5 × 10−6

αF

+20to70

°C; ≤10 kHz;

0.25 mT

±0.6)

× 10−6

K−1

DC, 25

°C

≈ 1

Ωm

≥ 170

°C

density

≈ 4800

kg/m3

Fig.1

Complex permeability as

a function of frequency.

handbook, halfpage

MBW057

110

10 4

f (MHz)

µ' ,

s µ''s

10 3

10 2

10 1

3B7

µ''s

µ'

Fig.2

Initial permeability as a

function of temperature.

handbook, halfpage

5000

250

MBW058

150

1000

2000

3000

4000

T ( C)

3B7

Fig.3 Typical B-H loops.

handbook, halfpage

500

MBW020

100

200

300

400

(mT)

3B7

25oC

100oC

150

250

H (A/m)

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