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Ferrite for EMI Suppression
High Permeability Material HF90
This ferrite material has high magnetic permeability and a peak impedance at a lower frequency band than conventional materials. It also
has good noise absorption characteristics in the AM band (100kHz to 1.6MHz).
FEATURES
• Good noise absorption characteristics in the frequency band
from 100kHz to 1.6MHz.
• Replacing metal ferrite with this material can reduce cost.
• Effective noise suppression for devices with inverters.
• Compatible with various shapes and sizes for different use
conditions.
APPLICATIONS
• Air conditioners, microwave ovens, refrigerators, and other
electrical home appliances.
• Industrial equipment with inverters.
EXAMPLE SHAPES
Shape
T14X7X8
T18X10X10
T22X10X14
T25X13X15
T28X13X16
T38X14X22
T80X20X50
Outer
diameter
14
18
22
25
28
38
80
Height
7
10
10
13
13
14
20
Dimensions in mm
MATERIAL CHARACTERISTICS
Material
Initial permeability[23°C]
Coercive force
Saturation magnetic flux density
[23°C, 1194A/m]
Electrical resistivity
Resistivity
µi
T
c
B
s
ρ
db
HF90
5000
>180
460min.
0.3
4.8× 10
3
°C
mT
Ω•
m
kg/m
3
IMPEDANCE vs. FREQUENCY CHARACTERISTICS
100
Impedance(
Ω
)
Inner
diameter
8
10
14
15
16
22
50
10
HF90(New)
HF70
1
0.1
0.01
0.1
Frequency (MHz)
1
10
Sample shapes: T28× 14× 15 Number of coils: 1T
• All specifications are subject to change without notice.
001-02 / 20070302 / e120_10.fm
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