Ferroxcube
Material specification
4M2 SPECIFICATIONS
Low permeability specialty NiZn ferrite only used in
large toroids and machined products mainly for
scientific particle accelerators operating at frequencies
up to 10 MHz.
SYMBOL
µ
i
B
CONDITIONS
25
°C; ≤10
kHz;
0.25 mT
25
°C;
10 kHz;
3000 A/m
100
°C;
10 kHz;
3000 A/m
DC; 25
°C
VALUE
140
±20%
≈
310
≈
270
≈
10
5
≥
200
≈
5000
Ωm
°C
kg/m
3
mT
10
4M2
handbook, halfpage
10
3
MBW446
4M2
µ'
s ,
µ''
s
10
2
µ'
s
UNIT
µ''
s
ρ
T
C
density
1
1
10
10
2
f (MHz)
10
3
Fig.1
Complex permeability as
a function of frequency.
handbook, halfpage
500
MBW447
MBW448
4M2
handbook, halfpage
500
µ
i
400
B
(mT)
400
25 oC
100 oC
4M2
300
300
200
200
100
100
0
50
50
150
T (
o
C)
250
0
100
0
100
200
1000
2000
H (A/m)
Fig.2
Initial permeability as a
function of temperature.
Fig.3 Typical B-H loops.
2008 Sep 01
255
FERROXCUBE [ FERROXCUBE INTERNATIONAL HOLDING B.V. ]
