Ferroxcube
Material specification
4S2 SPECIFICATIONS
Wideband EMI-suppression material specified on
impedance and optimized for frequencies from 30 to
1000 MHz.
SYMBOL
µ
i
B
CONDITIONS
25
°C; ≤10
kHz;
0.25 mT
25
°C;
10 kHz;
1200 A/m
100
°C;
10 kHz;
1200 A/m
25
°C;
30 MHz
25
°C;
300 MHz
DC; 25
°C
VALUE
≈
850
≈
340
≈
230
10
2
4S2
10
4
µ'
s ,
µ''
s
10
3
µ'
s
MBW306
4S2
UNIT
mT
µ''
s
Z
(1)
ρ
T
C
density
Note
≥
50
≥
90
≈
10
5
≥
125
≈
5 000
Ω
Ωm
°C
kg/m
3
10
10
1
1
10
f (MHz)
10
2
1. Measured on a bead
∅5 × ∅2 ×
10 mm.
Fig.1
Complex permeability as
a function of frequency.
MBW308
2000
µ
i
1500
MBW307
handbook, halfpage
500
4S2
B
(mT)
400
25 oC
100 oC
4S2
300
1000
200
500
100
0
50
0
50
150
T (
o
C)
250
50
0
50
100
500
1000
H (A/m)
Fig.2
Initial permeability as a
function of temperature.
Fig.3 Typical B-H loops.
2008 Sep 01
258
FERROXCUBE [ FERROXCUBE INTERNATIONAL HOLDING B.V. ]
