AC Line Filters
Common Mode SCF Coils, SCF Series,
High Inductance Type
Overview
Applications
The KEMET SCF coils are common mode chokes with a
wide variety of characteristics. These toroidal coils are
designed with nanocrystalline metal cores and are useful
in various noise countermeasure fields.
• Audio-visual equipment
• Home appliances
• Power supplies
Benefits
• Nanocrystalline metal core
• Ultra-high inductance
• Ultra-high permeability
• Operating temperature range from −40°C to +120°C
• UL 94 V–0 flame retardant rated cap
Part Number System
SCF
27
-10
-1300
Series
Dimension Code
(See Dimensions)
Rated Current
(A)
Inductance (mH)
Minimum
SCF
Blank
20
25
27
0x = x A
xx = xx A
xx00 = xx mH
xx0 = x.x mH
Examples:
02 = 2 A
10 = 10 A
Examples:
1300 = 13 mH
650 = 6.5 mH
Core Orientation
Blank = Vertical type
H = Horizontal type
Built Into Tomorrow
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
1
AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
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 or metal 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.
Ferrite 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. Metal materials, however,
are effective throughout the broadband frequency range, in low as well as high frequencies.
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. 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 are available
upon request.
Figure 1 - Relationship between the magnetic permeability of each material and its effective frequency range
Higher magnetic permeability:
Higher noise suppression effect in the broadband frequency range
Nanocrystalline Core
Magnetic Permeability
20,000
Higher magnetic permeability:
Higher noise suppression effect
in the lower frequency range
Mn-Zn Series
S18H
S15H
Lower magnetic permeability:
Higher noise suppression effect
in the higher frequency range
10H
10,000
7H
5H
Ni-Zn Series
0
10 kHz
1400L
700L
100 kHz
1 MHz
10 MHz
100 MHz
1 GHz
Effective Frequency Range
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
2
AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
Dimensions – Millimeters
Figure 1
Figure 2
T
OD
(a)
L
(a)
N1
N2
(b)
(b)
N2
L
N1
H
(a)
(b)
OD
Part Name
SCF-01-5000
SCF-02-1300
SCF-03-650
SCF-03-650H
SCF-05-060
SCF-05-350
SCF20-05-550
SCF20-05-1100
SCF25-06-2000
SCF25-08-1300
SCF27-10-1300
SCF27-15-700
SCF27-15-700H
1
Dimensions
(mm)
OD
T
H
(Maximum) (Maximum) (Maximum)
15.0
15.0
15.0
15.0
15.0
15.5
25.0
25.0
32.0
32.0
35.0
36.0
35.0
12.0
12.0
12.0
11.0
12.0
15.5
15.5
23.0
23.0
24.0
24.0
-
12.0
25.0
Pin Pitch1
(Reference)
L
a
b
15±2.0
15±2.0
15±2.0
5±2.0
5±1.5
15±2.0
20±2.5
20±2.5
10±2.5
10±2.5
15±3.0
15±3.0
10±2.0
–
–
5
10
5
5
14
14
13
13
24
24
22
–
–
9
10
9
9
12
12
20
20
20
20
21
Figure
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 1
Fig. 1
Fig. 1
Fig. 1
Fig. 1
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Pin pitch listed above for reference only. Values not guaranteed.
Environmental Compliance
All KEMET AC line filters are RoHS Compliant.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
3
AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
Performance Characteristics
Item
Performance Characteristics
Rated Voltage
Withstanding Voltage
Rated Current Range
Rated Inductance Range
Inductance Measurement Condition
Thermal Class
Operating Temperature Range
250 VAC/VDC
2,400 VAC (2 seconds, between lines)
1 – 15 A
0.6 – 50.0 mH minimum
10 kHz
E (120°C)
−40°C to +120°C (include self temperature rise)
Table 1 – Ratings & Part Number Reference
1
Part Number
Rated
Current
(A)
Inductance
(mH)
Minimum
DC Resistance/
Line (mΩ)
Maximum
Temperature Rise
(K)
Maximum
Wire
Diameter
(mm)
Weight
(g)
Approximate
SCF-01-50001
SCF-02-13001
SCF-03-6501
SCF-03-650H1
SCF-05-0601
SCF-05-3501
SCF20-05-550
SCF20-05-1100
SCF25-06-2000
SCF25-08-1300
SCF27-10-1300
SCF27-15-700
SCF27-15-700H
1
2
3
3
5
5
5
5
6
8
10
15
15
50.0
13.0
6.5
6.5
0.6
3.5
5.5
11.0
20.0
13.0
13.0
7.0
7.0
390.0
115.0
70.0
70.0
18.0
35.0
28.0
39.0
26.0
18.0
15.0
5.0
8.5
60
50
55
55
55
55
50
70
45
50
55
70
70
0.35
0.45
0.50
0.50
0.50
0.60
0.80
0.80
1.10
1.20
1.30
1.50
1.50
5.0
5.0
5.0
5.0
3.3
5.0
11.4
13.5
41.5
41.0
47.0
48.0
49.0
Insulation distance designed value of ≥ 2.6 mm.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
4
AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
Frequency Characteristics
1M
SCF-01-5000
1M
10k
10k
Impedance (Ω)
100k
Impedance (Ω)
100k
1k
100
1k
100
10
10
1
1
1k
1M
10k
100k
Frequency (Hz)
1M
10M
1k
30M
SCF-03-650
1M
10k
10k
Impedance (Ω)
100k
Impedance (Ω)
100k
1k
100
10
10M
30M
100k
1M
10M
30M
100k
1M
10M
30M
100k
1M
10M
30M
SCF-03-650H
100
10k
100k
Frequency (Hz)
1M
10M
30M
1k
SCF-05-060
1M
10k
10k
Impedance (Ω)
100k
Impedance (Ω)
1M
1k
100k
1k
100
10k
Frequency (Hz)
SCF-05-350
1k
100
10
10
1
1
1k
10k
100k
Frequency (Hz)
1M
10M
30M
1k
SCF20-05-550
1M
100k
10k
10k
Impedance (Ω)
100k
Impedance (Ω)
100k
Frequency (Hz)
1
1k
1M
10k
10
1
1M
SCF-02-1300
1k
100
10
10k
Frequency (Hz)
SCF20-05-1100
1k
100
10
1
1
1k
10k
100k
Frequency (Hz)
1M
10M
30M
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
1k
10k
Frequency (Hz)
LF0012_SCF • 9/25/2023
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AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
Frequency Characteristics cont.
1M
SCF25-06-2000
1M
10k
10k
Impedance (Ω)
100k
Impedance (Ω)
100k
1k
100
10
1k
100
10
1
1
1k
1M
10k
100k
Frequency (Hz)
1M
10M
30M
1k
SCF27-10-1300
1M
10k
10k
Impedance (Ω)
100k
Impedance (Ω)
100k
1k
100
10
10k
100k
1M
10M
30M
100k
1M
10M
30M
Frequency (Hz)
SCF27-15-700
1k
100
10
1
1
1k
1M
SCF25-08-1300
10k
100k
1M
10M
30M
100k
1M
10M
30M
Frequency (Hz)
1k
10k
Frequency (Hz)
SCF27-15-700H
Impedance (Ω)
100k
10k
1k
100
10
1
1k
10k
Frequency (Hz)
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
6
AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
Packaging
Type
SCF-01-5000
SCF-02-1300
SCF-03-650
SCF-03-650H
SCF-05-060
SCF-05-350
SCF20-05-550
SCF20-05-1100
SCF25-06-2000
SCF25-08-1300
SCF27-10-1300
SCF27-15-700
SCF27-15-700H
Packaging Type
Pieces Per Box
1,300
1,020
1,300
Tray
400
100
150
Handling Precautions
Precautions for product storage
AC Line Filters should be stored in normal working environments. While the chokes themselves are quite robust in other
environments, solderability will be degraded by exposure to high temperatures, high humidity, corrosive atmospheres, and
long term storage.
KEMET recommends that maximum storage temperature not exceed 40°C and maximum storage humidity not exceed 70%
relative humidity. Atmospheres should be free of chlorine and sulfur bearing compounds. Temperature fluctuations should
be minimized to avoid condensation on the parts. Avoid storage near strong magnetic fields, as this might magnetize the
product.
For optimized solderability, AC line filters stock should be used promptly and preferably within 6 months of receipt.
Product temperature rise values
The values listed for temperature rise are the result of self-heating in wires when the rated current (commercial frequency)
is applied.
When using the product, check and evaluate the value of the core temperature rise under actual operating conditions.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
7
AC Line Filters – Common Mode SCF Coils, SCF Series, High Inductance Type
KEMET Electronics Corporation Sales Offices
For a complete list of our global sales offi ces, please visit www.kemet.com/sales.
Disclaimer
YAGEO Corporation and its affi liates do not recommend the use of commercial or automotive grade products for high reliability applications or manned space fl ight.
All product specifi cations, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given
herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET specifi cally disclaims – any warranty concerning suitability for a specifi c customer application or use.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes no
obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury or
property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicated or that other
measures may not be required.
When providing KEMET products and technologies contained herein to other countries, the customer must abide by the procedures and provisions stipulated in all
applicable export laws and regulations, including without limitation the International Traffi c in Arms Regulations (ITAR), the US Export Administration Regulations
(EAR) and the Japan Foreign Exchange and Foreign Trade Act.
KEMET is a registered trademark of KEMET Electronics Corporation.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0012_SCF • 9/25/2023
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