SC-10-340 View Datasheet(PDF) - KEMET
Part Name
Description
Manufacturer
SC-10-340 Datasheet PDF : 17 Pages
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AC Line Filters – Common Mode SC Coils, Standard Series
Magnetic Permeability of Ferrite Material
In order to achieve most efficient noise reduction, it is important to select the material according to the target frequency
band. Depending on its magnetic permeability, a particular ferrite material will be effective in a certain frequency band.
A schematic representation of the relationship between the magnetic permeability of each material and the corresponding
effective band range is shown in Figure 1. Materials with higher magnetic permeability are effective in the lower frequency
range, while those with lower magnetic permeability are effective in the higher frequency range. Thus, Mn-Zn products are
mainly used for reducing conduction noise, while Ni-Zn products are commonly used for radiation noise countermeasures.
The effective frequency range varies depending on core shape, size and number of windings. This frequency dependence
of the magnetic permeability as shown in the figure serves for reference purposes only and it should be tested on the actual
device to determine its effectiveness.
S18H, S15H, 10H, 7H, 5H, 1400L and 700L are KEMET’s proprietary ferrite material names.
Other materials can also be available on request.
Figure 1 - Relationship between the magnetic permeability of each material and its effective frequency range
20,000
Mn-Zn Series
S18H
S15H
Higher magnetic permeability:
Higher noise suppression effect
in the lower frequency range
10,000
10H
7H
5H
Lower magnetic permeability:
Higher noise suppression effect
in the higher frequency range
0
10 kHz
100 kHz
Ni-Zn Series
1 MHz
1400L
700L
10 MHz
Effective Frequency Range
100 MHz
1 GHz
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0005_SC • 10/14/2019 2
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