SIFERRIT materials
T46
Material properties
Preferred application
Broadband transformers
Material
T461)
MnZn
Base material
Symbol
Unit
A/m
Initial permeability
(T = 25 °C)
μi
15000
±30%
Meas. field strength
Flux density (near
H
1200
400
BS (25 °C) mT
saturation) (f = 10 kHz) BS (100 °C) mT
Coercive field strength Hc (25 °C) A/m
Hc (100 °C) A/m
240
7
6
(f = 10 kHz)
Optimum
fmin
MHz
0.01 … 0.10
frequency range
fmax
Relative at fmin
loss factorat fmax
tan δ/μi
10–6
10–6
<8
<100
Hysteresis
ηB
10–6/mT <2.0
material constant
Curie temperature
Relative
temperature coefficient αF
at 25 … 55 °C
TC
°C
>130
10–6/K
—
—
at 5 … 25 °C
Mean value of αF
10–6/K
– 0.6
at 25 … 55 °C
Density (typical values)
kg/m3
10–6
4950
—
Disaccommodation
factor at 25 °C
DF
Resistivity
ρ
Ωm
0.01
Core shapes
Toroid, E
1) Material values defined on the basis of small toroids (≤R10)
Please read Cautions and warnings and
2
09/06
Important notes at the end of this document.
EPCOS [ EPCOS ]
