EMI Cores
ESD-FPL Series Solid Cores for Flat Cables
for High Frequency (Bare)
Overview
The KEMET ESD-FPL Series solid cores are designed for
use on flat cables. A wide range of Nickel Zinc (NiZn)
options are available in bare type and allows for targeting of
specific high frequency ranges.
EMI cores are part of a family of passive components which
address the issues of noise or electromagnetic interference
(EMI) in circuits or systems.
Applications
• Office equipment
• Home appliances
• Inkjet printers
• Consumer electronics
• Industrial equipment
• Test and measurement equipment
• Medical equipment
• Audio-visual equipment
Benefits
• NiZn ≤ 300 MHz (FM band range) options available
• Solid construction
• Wide range of products available
• Thin and minimal gap solutions available
One world. One KEMET
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
E5004_ESD-FPL • 3/31/2020
1
EMI Core – ESD-FPL Series Solid Cores for Flat Cables for High Frequency (Bare)
Part Number System
ESD-
Series
ESD-
FPL-
Form Type
Solid
14.5-
Core Size
Outer Length Code (mm)
See Table 1
3
Core Size
Thickness (mm)
See Table 1
Core Material and Effective Frequency Range
There are two ferrite material options for KEMET
EMI Cores: Nickel-Zinc (NiZn) and Manganese
Zinc (MnZn). Each core material has a different
resistance and effective frequency range. The
MnZn core material has a lower resistance
compared to the NiZn; therefore, adequate
insulation is required before use.
The NiZn core material is typically effective for
frequencies in the MHz band range such as the
FM-band, while the MnZn core material is typically
effective for the kHz band range such as the AM-
band. See Figure 1.
It is recommended to measure the actual
frequency range effectiveness in the target
application.
Impedance (Ω)
Figure 1 – Effective band range of Mn-Zn and Ni-Zn ferrite core material.
(Representative example, measured with same-dimension ring core)
1,000
AM band range
100
FM band range
Ni-Zn series core
Mn-Zn series core
10
1
0.01
0.1
1
10
100
1,000
Frequency (MHz)
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
E5004_ESD-FPL • 3/31/2020
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EMI Core – ESD-FPL Series Solid Cores for Flat Cables for High Frequency (Bare)
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 2 - Relationship between the magnetic permeability of each material and its effective frequency range
20,000
Higher magnetic permeability:
Higher noise suppression effect
in the lower frequency range
Mn-Zn Series
S18H
Magnetic Permeability
S15H
10,000
10H
7H
5H
Lower magnetic permeability:
Higher noise suppression effect
in the higher frequency range
Ni-Zn Series
1400L
700L
100 kHz
1 MHz
10 MHz
100 MHz
1 GHz
0
10 kHz
Effective Frequency Range
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
E5004_ESD-FPL • 3/31/2020
3
EMI Core – ESD-FPL Series Solid Cores for Flat Cables for High Frequency (Bare)
Environmental Compliance
All KEMET EMI cores are RoHS compliant.
Dimensions – Millimeters
Figure 1
Figure 2
Figure 3
See Table 1 for dimensions
Installation Example
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
E5004_ESD-FPL • 3/31/2020
4
EMI Core – ESD-FPL Series Solid Cores for Flat Cables for High Frequency (Bare)
Performance Characteristics
Item
Operating temperature
Frequency range
Outer length
Outer width
Inner length
Inner width
Thickness
Type
Material
−25°C to +85°C
High frequency
14.5 – 80.0 mm
2.75 – 12.0 mm
11.0 – 68.6 mm
0.7 – 2.2 mm
3.0 – 15.0 mm
Bare
NiZn 700L
Performance Characteristics
Table 1A – Ratings & Part Number Reference
Part
Number
ESD-FPL-14.5-3
ESD-FPL-14.5-5
ESD-FPL-14.5-8
ESD-FPL-14.5-10
ESD-FPL-16-12
ESD-FPL-18-8
ESD-FPL-18-12
ESD-FPL-18.7-3
ESD-FPL-18.7-12
ESD-FPL-21-8
ESD-FPL-13
ESD-FPL-24.5-8
ESD-FPL-25-12
ESD-FPL-27-8
ESD-FPL-7
ESD-FPL-15
ESD-FPL-28-10
ESD-FPL-32-8
ESD-FPL-32-12
ESD-FPL-20-12
Dimensions (mm)
A
14.5 ±0.5
14.5 ±0.7
14.5 ±0.7
14.5 ±0.6
16.0 ±0.5
18.0 ±1.0
18.0 ±0.7
18.7 ±0.6
18.7 ±0.6
21.0 ±0.8
23.8 ±0.7
24.5 ±1.0
25.0 ±0.9
27.0 ±1.0
28.0 ±0.6
28.0 ±0.5
28.0 ±1.0
32.0 ±1.0
32.0 ±1.0
33.2 ±1.0
Weight
E
0.80 ±0.15
0.80 ±0.30
0.80 ±0.30
0.80 ±0.20
0.85 ±0.15
1.00 ±0.20
1.00 ±0.15
0.70 ±0.20
0.70 ±0.20
0.80 ±0.30
1.10 ±0.50
0.90 ±0.20
0.85 ±0.35
1.30 ±0.15
1.50 ±0.25
1.50 ±0.20
0.80 +0.50,-0.30
0.80 ±0.15
0.80 ±0.15
1.50 ±0.60
B
11.0 ±0.7
11.0 ±0.8
11.0 ±0.8
11.0 ±0.8
11.5 ±0.3
14.0 ±0.6
14.0 ±0.5
15.0 ±0.6
15.0 ±0.6
17.0 ±0.7
18.8 ±0.5
20.0 ±0.8
21.0 ±0.8
22.0 ±0.7
23.5 ±0.5
23.0 ±0.4
24.0 ±0.8
28.0 ±0.7
28.0 ±0.7
27.0 ±1.0
C
2.75 ±0.3
2.75 ±0.4
2.75 ±0.4
2.75 ±0.4
4.5 ±0.3
5.0 ±0.4
5.0 ±0.3
2.75 ±0.4
2.75 ±0.4
5.0 ±0.3
6.3 ±0.5
4.5 ±0.5
5.0 ±0.5
6.5 ±0.3
7.7 ±0.3
7.7 ±0.3
5.0 ±0.5
5.0 ±0.3
5.0 ±0.3
8.0 ±0.6
D
3.0 ±0.3
5.0 ±0.5
8.0 ±0.5
10.0 ±0.5
12.0 ±0.4
8.0 ±0.5
12.0 ±0.3
3.0 ±0.5
12.0 ±0.5
8.0 ±0.3
15.0 ±0.6
8.0 ±0.5
12.0 ±0.6
8.0 ±0.2
7.0 ±0.6
14.6 ±0.4
10.0 ±0.5
8.0 ±0.3
12.0 ±0.3
12.0 ±0.6
(g)
3.80
3.90
4.20
4.20
3.40
2.90
8.20
3.40
6.00
3.50
9.30
6.60
5.70
8.40
5.80
12.40
7.20
5.40
7.40
12.20
Applicable
Cable
FPC, FFC
FPC, FFC
FPC, FFC
FPC, FFC
8 Core
10 Core
FPC, FFC
FPC, FFC
FPC, FFC
FPC, FFC
13 Core
FPC, FFC
16 Core
16 Core
16 Core
16 Core
FPC, FFC
FPC, FFC
FPC, FFC
20 Core
Shape
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
Figure 2
Figure 2
Figure 3
Figure 3
Figure 3
Figure 3
Remarks
Thin type
Thin type
Thin type
Thin type
Frequency
Range
1
Material
NiZn
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
700L
≤ 300 MHz
MnZN
(FM band range)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Thin type
Thin type
Part
Number
A
B
C
Dimensions
D
E
(g)
Weight
Applicable
Cable
Shape
Remarks
≤ 300 MHz
(FM band range)
Frequency Range
1
MnZn
NiZn
Material
1
Frequency range is for reference only. Please test with actual device before use.
* Other sizes available on request. Please contact KEMET.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
E5004_ESD-FPL • 3/31/2020
5
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