AC Line Filters
Common Mode SSR Coils, 21NV/NH, High Impedance Type
Overview
The KEMET SSR coils are common mode chokes with a
wide variety of characteristics. These gear type coils are
designed with our proprietary high permeability ferrite
S15H cores and are useful in various noise countermeasure
fields.
Applications
•
•
•
•
Audio-visual equipment
Office automation equipment
Digital appliances
Power supplies
Benefits
•
•
•
•
•
•
Proprietary S15H ferrite material
High permeability
Large inductance due to non-divided bobbin
Compact size, low profile and light weight
Operating temperature range from −25°C to +120°C
UL94 V-0 flame retardant rated base and bobbin
Part Number System
SSR
Series
SSR
21N
Core Size
(mm)
21N = 20.9 mm
V-
Core Orientation and Bobbin Type
H = Horizontal
V = Vertical
03
Rated Current AC
(A)
0x = 0.x A
xx = x.x A
Examples:
04 = 0.4 A
13 = 1.3 A
1810
Inductance (mH)
Minimum
xxx0 = xxx mH
xxx = xx.x mH
Examples:
1810 = 181 mH
064 = 6.4 mH
One world. One KEMET
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0044_SSR21NV-NH • 7/9/2018
1
AC Line Filters – Common Mode SSR Coils, 21NV/NH, High Impedance 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 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
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
LF0044_SSR21NV-NH • 7/9/2018
2
AC Line Filters – Common Mode SSR Coils, 21NV/NH, High Impedance Type
Dimensions – Millimeters
SSR21NV
22.0 Maximum
13.0
SSR21NH
23.0 Maximum
10.0
16.0 Maximum
N1
N2
27.0 Maximum
φ0.8
3.5 ± 0.5
φ0.8
10 ± 0.5
3.5 ± 0.5
18.5 ± 0.5
13 ± 0.5
10 ± 0.5
Environmental Compliance
All KEMET AC Line Filters are RoHS Compliant.
RoHS Compliant
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0044_SSR21NV-NH • 7/9/2018
14.5 Maximum
18.5
N1
N2
23.0 Maximum
10.0
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AC Line Filters – Common Mode SSR Coils, 21NV/NH, High Impedance Type
Table 1 – Ratings & Part Number Reference
Part Number
SSR21NH-031810
SSR21NV-031810
SSR21NH-041290
SSR21NV-041290
SSR21NH-05795
SSR21NV-05795
SSR21NH-06500
SSR21NV-06500
SSR21NH-07405
SSR21NV-07405
SSR21NH-08325
SSR21NV-08325
SSR21NH-10250
SSR21NV-10250
SSR21NH-12175
SSR21NV-12175
SSR21NH-13140
SSR21NV-13140
SSR21NH-15097
SSR21NV-15097
SSR21NH-20064
SSR21NV-20064
Rated Current Inductance (mH)
AC (A)
Minimum
0.3
0.3
0.4
0.4
0.5
0.5
0.6
0.6
0.7
0.7
0.8
0.8
1.0
1.0
1.2
1.2
1.3
1.3
1.5
1.5
2.0
2.0
181.0
181.0
129.0
129.0
79.5
79.5
50.0
50.0
40.5
40.5
32.5
32.5
25.0
25.0
17.5
17.5
14.0
14.0
9.7
9.7
6.4
6.4
DC Resistance/
Line (Ω)
Maximum
2.85
2.85
1.85
1.85
1.2
1.2
0.76
0.76
0.61
0.61
0.47
0.47
0.36
0.36
0.27
0.27
0.21
0.21
0.14
0.14
0.09
0.09
Temperature
Rise (K)
Maximum
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
Wire Diameter
(mm)
0.20
0.20
0.23
0.23
0.25
0.25
0.28
0.28
0.30
0.30
0.32
0.32
0.35
0.35
0.37
0.37
0.40
0.40
0.45
0.45
0.50
0.50
Weight (g)
Approximate
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
13.0
14.5
Performance Characteristics
Item
Rated Voltage
Withstanding Voltage
Insulation Resistance
Rated Current AC Range
Rated Inductance Range
Inductance Measurement Condition
Thermal Class
Operating Temperature Range
Inductance Measurement Condition
250 VAC
2,400 VAC (2 seconds, between lines)
> 100 MΩ at 500 VDC (between lines)
0.3 – 2.0 A
6.4 – 181.0 mH minimum
10 kHz
E (120°C)
−25°C to +120°C (include self temperature rise)
at 10 kHz
Performance Characteristics
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0044_SSR21NV-NH • 7/9/2018
4
AC Line Filters – Common Mode SSR Coils, 21NV/NH, High Impedance Type
Frequency Characteristics
Packaging
Type
SSR21NH
SSR21NV
Packaging Type
Tray
Pieces per Box
420
450
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
LF0044_SSR21NV-NH • 7/9/2018
5
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