DATA SHEET
Common Mode Chokes RT series
Current-compensated Chokes
Rated currents from 6 to 20 A
Approvals & Compliances
Up to 600 VAC and VDC
2- and 3-wire configurations
Horizontal and vertical PCB mounting types
Ruggedized saturation and thermal behavior
Open construction for forced and convection
cooling
Straightforward pin-out for easy PCB design
Performance indicators
RT common-mode chokes are mainly used to filter
EMI noise on AC power lines up to 600 VAC. EMI
noise of electronic equipment can go to the power
lines and disturb the proper function of other
devices like communication devices or control
logic of robotics. Thus noise generated by the
equipment from switched power electronics or by
high slew rates of controllers needs to be filtered.
RT common-mode chokes are used to suppress
EMI noise in PCB integrated filter designs with line
bypass capacitors or in combination with single
phase filters for extra low leakage filter designs.
Features and Benefits
Cost-effective PCB designs for up to 32 A with
forced cooling *
Compact size and light weight
Low magnetic leakage flux
Excellent winding insulation
Standardized foot print
Broad range of inductance ratings
Custom-specific versions on request
Typical Applications
Technical Specifications
AC and DC filtering for midsize power range
drives, photovoltaic inverters, fast chargers,
charging stations, UPS and switch mode power
supplies
Maximum continuous operating voltage
600 VAC (3-line) and 300 VAC/425 VDC (2-line)
Operating frequency
dc to 400 Hz
High potential test voltage winding-towinding @ 25°C
2500 VAC, 60 sec, guaranteed, 2 sec factory test
Temperature range (operation and storage)
Filter with low leakage current noise or improved
immunity against grid disturbances
-40°C to +100°C (40/100/56)
Flammability corresponding to
UL 94 V-0
Electronic devices, automation and (industrial)
LED lighting
Cooling
convection/forced cooling
Communication devices
MTBF @ 40°C/230 V (Mil-HB-217F)
>5,000,000 hours
Medical and laboratory Equipment
Rated currents
6 to 20 A
Converters
Typical electrical schematic
2
Common Mode Chokes
Schaffner Group
DATA SHEET
15. Jun 2022
RT Series
Selection table
Buy
convection
*forced cooling
Inductance
**typ. Inductance
Resistance
Choke
***Ø Pin
cooling nominal
3 m/s nominal
Ln @ 25˚C
Ls @ 25˚C
R @ 25˚C
current @ 60˚C
current @ 60˚C
100kHz
100kHz
[A]
[A]
[mH/path]
[μH/path]
Weight
[mΩ/path]
[size]
ØP [mm]
[g]
±0.1
RT8122-6-10M0
6
9.5
10
30
33
1
1.1
80
RT8122-8-8M0
8
12.5
8
24.8
21
1
1.3
80
RT8122-10-6M0
10
16
6
19.2
16
1
1.4
80
RT8122-12-5M0
12
19
5
20.5
14
2
1.5
100
RT8122-16-4M0
16
27
4
17.6
10
2
1.8
110
RT8122-20-3M0
20
32
3
13.5
7
3
2
160
RT8522-6-10M0
6
9.5
10
31.5
33
4
1.1
70
RT8522-8-8M0
8
12.5
8
24
21
4
1.3
80
RT8522-10-6M0
10
16
6
19.2
16
4
1.4
80
RT8522-12-5M0
12
19
5
23
14
5
1.5
90
RT8522-16-4M0
16
27
4
18.8
10
5
1.8
110
RT8522-20-3M0
20
32
3
13.5
7
6
2.0
150
RT8132-6-6M0
6
9.5
6
18
27
7
1.1
80
RT8132-8-4M8
8
12.5
4.8
14.9
17
7
1.3
90
RT8132-10-4M0
10
16
4
16
15
8
1.5
110
RT8132-12-3M6
12
19
3.6
14.4
12
8
1.6
120
RT8132-16-3M0
16
27
3
12
8
9
1.8
170
RT8132-20-2M5
20
32
2.5
10
7
9
2.1
190
RT8532-6-6M0
6
9.5
6
18
27
10
1.1
90
RT8532-8-4M8
8
12.5
4.8
13.9
17
10
1.3
90
RT8532-10-4M0
10
16
4
16
15
11
1.5
110
RT8532-12-3M6
12
19
3.6
15.1
12
11
1.6
120
RT8532-16-3M0
16
27
3
13.8
8
12
1.8
160
RT8532-20-2M5
20
32
2.5
10.8
7
12
2.1
190
Test conditions: Inductance tolerance: +50%, –30%; Resistance tolerance: +15% @ 25°C; Electrical characteristics @ 25°C: ±2°C
* typical current for forced cooling with 3 m/s. Due to the possible turbulences and degradation of the air stream within an equipment please consider
thermal validation.
** typical stray inductance, max is 0.1% of Ln
*** Length of pin (Dimension P) is always 5.5 mm ± 1
Product selector
Examples: RT8532-16-3M0: Vertical 3-line choke for 16 A, with 3 mH ; RT8122-20-3M0: Horizontal 2-line choke for 20 A, with 3 mH
3
Common Mode Chokes
Schaffner Group
Distribution Inventory
Up-to-date inventory levels for global distributors is available at
https://products.schaffner.com/stock
Typical Choke Attenuation/Resonance Frequency Characteristics
Per CISPR 17; 50 Ω/50 Ω asym
RT 8122
RT 8132
RT 8522
RT 8532
DATA SHEET
15. Jun 2022
4
Common Mode Chokes
Schaffner Group
DATA SHEET
15. Jun 2022
Mechanical Data: Horizontal Chokes (2-line And 3-line)
All dimensions in mm; 1 inch = 25.4 mm
Tolerances according: ISO 2768-m/EN 22768-m
Horizontal 2-line chokes (Size 1-3)
Horizontal 3-line chokes (Size 7-9)
Dimensions
A
B
ØD (max)
H (max)
ØD1
ØD2
ØD3
ØE
(±0.5)
(±0.5)
Size1 (RT8122-6-10M0, RT8122-8-8M0, RT8122-10-6M0)
21
25
45
34
42
1.5
2.5
36
SIze2 (RT8122-12-5M0, RT8122-16-4M0)
26
30
51
33
48
1.9
2.5
40
Size3 (RT8122-20-3M0)
32
36
57
37
54
2.1
2.5
43
ØD (max)
H (max)
ØD1
ØD2
ØA
(±0.5)
(±0.5)
(±0.5)
Size 7 (RT8132-6-6M0, RT8132-8-4M8)
38
-
46
34
43
1.4
2.5
35
Size 8 (RT8132-10-4M0,RT8132-12-3M6)
44
-
51
33
48
1.7
2.5
40
Size 9 (RT8132-16-3M0, RT8132-20-2M5)
49
-
57
37
54
2.3
2.5
44
Pin material: Copper (base), Sn (final plating typical thickness 0.15 mm; composition: Sn-1.2AG-4Cu or SN-3Cu-0.25Ni)
Please visit www.schaffner.com to find more details on filter connections.
5
Common Mode Chokes
Schaffner Group
DATA SHEET
15. Jun 2022
Mechanical Data: Vertical Chokes (2-line And 3-line)
All dimensions in mm; 1 inch = 25.4 mm
Tolerances according: ISO 2768-m/EN 22768-m
Vertical 2-line chokes (Size 4-6)
Vertical 3-line chokes (Size 10-12)
Dimensions
A
A1
B
L
W
H
L1
L2
L3
W1
W2
ØD2 ØD3
X
Y
(±0.5)
(±0.5) (±0.5)
(max) (max)
(max) (±0.5)
(±0.5)
Size 4 (RT8522-6-10M0, RT8522-8-8M0, RT
8522-10-6M0)
16
-
20
43
32
44
32
26
-
27.8
22
1.5
2.5
3
2.9
SIze 5 (RT8522-12-5M0, RT8522-16-4M0)
16
-
22
50
32
52
39
33
-
27
23
1.9
2.5
3
2
Size 6 (RT8522-20-3M0)
16
-
22
56
32
57
42
35
-
31.2
25
2.1
2.5
3.5 3.1
Size 10 (RT8532-6-6M0, RT8532-8-4M8)
36
18
24
44
32
47
41
27
9
29
-
1.4
1.4
2.5 2.5
Size 11 (RT8532-10-4M0,RT8532-12-3M6)
38
19
24
49
34
53
46
28.5
9.5
31
-
1.7
1.7
4
Size 12 (RT8532-16-3M0, RT8532-20-2M5)
46
23
29
56
37
60
53
34.5
11.5
34
-
2.2
2.2
3.5 2.5
Pin material: Copper (base), Sn (final plating typical thickness 0.15 mm; composition: Sn-1.2AG-4Cu or SN-3Cu-0.25Ni)
Please visit www.schaffner.com to find more details on filter connections.
(±0.5) (±0.5)
3.5
6
Common Mode Chokes
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15. Jun 2022
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DATA SHEET
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