Ferroxcube
Material specification
3S4 SPECIFICATIONS
Wideband EMI-suppression material specified on
impedance and optimized for frequencies from 10 to
300 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;
3 MHz
25
°C;
30 MHz
25
°C;
100 MHz
25
°C;
300 MHz
DC; 25
°C
VALUE
≈
1 700
≈
320
≈
170
≥
25
≥
60
≥
80
≥
90
≈
10
3
≥
110
≈
4 800
Ω
mT
10
2
3S4
handbook, halfpage
10
4
MBW195
3S4
UNIT
µ'
s ,
µ''
s
10
3
µ'
s
µ''
s
Z
(1)
10
10
1
1
10
ρ
T
C
density
Note
Ωm
°C
kg/m
3
Fig.1
f (MHz)
10
2
1. Measured on a bead
∅5× ∅2 ×
10 mm.
Complex permeability as
a function of frequency.
handbook, halfpage
5000
µ
i
4000
MBW191
MBW199
3S4
handbook, halfpage
500
B
(mT)
400
25oC
100oC
3S4
3000
300
2000
200
1000
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
212