Radial Leaded Common Mode Chokes / Filters
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What is a Common Mode Choke?
A common mode choke is an electrical filter that blocks high frequency noise common to two or more data or power lines while allowing the desired DC or low-frequency signal to pass. Common mode (CM) noise current is typically radiated from sources such as unwanted radio signals, unshielded electronics, inverters, and motors. Left unfiltered, this noise presents interference problems in electronics and electrical circuits.
How do Common Mode Chokes Work?In normal or differential mode (single choke), current travels on one line in one direction from the source to the load, and in the opposite direction on the return line that completes the circuit. In common mode, the noise current travels on both lines in the same direction.
In common mode, the current in a group of lines travels in the same direction so the combined magnetic flux adds to create an opposing field to block the noise. In differential mode, the current travels in opposite directions and the flux subtracts or cancels out so that the field does not oppose the normal mode signal.
How do I choose a Common Mode Choke?The main criteria for selecting a common mode choke are:
- Required impedance: How much attenuation of noise is needed?
- Required frequency range: Over what frequency bandwidth is the noise?
- Required current handling: How much differential mode current must it handle?
Radials differ from axials in that the leads exit from a common side of the component, rather from opposite ends or sides. This gives the radial a vertical profile and a smaller printed wiring footprint.
| Manufacturer Part No | Order Code | Description / Manufacturer | Availability | Price For |
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SH-302
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9265805 |
Choke, Common Mode, 7.5 µH, 3 A, SH Series MULTICOMP PRO
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7.5µH | 3A | - | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CMV60
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1187667 |
Choke, Common Mode, 1.4 mH, 6 A, CMV Series ROXBURGH EMC
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1.4mH | 6A | CMV Series | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SMV80
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1187674 |
Choke, Differential Mode, 85 µH, SMV Series ROXBURGH EMC
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154 deliver in 2-3 business days from our SG warehouse :(SG stock) Order before 17:00 Mon-Fri (excluding National Holidays) 1,034 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays) [50 more will be available on 10/12/25] More stock available week commencing 2/9/26 |
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90µH | 8A | SMV Series | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CMV80
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1187668 |
Choke, Common Mode, 740 µH, 8 A, CMV Series ROXBURGH EMC
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740µH | 8A | CMV Series | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
MCT25X15X15C-502NU
|
1864501 |
Choke, Common Mode, 5 mH, 6 A, MCT25 Series MULTICOMP PRO
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5mH | 6A | - | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CM5441Z101B-10
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2292340 |
Choke, Common Mode, 75 A LAIRD
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CM5441Z161B-10
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2292341 |
Choke, Common Mode, 75 A LAIRD
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744823422
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2894616 |
Choke, Common Mode, Power Line, 2.2 mH, 4A, WE-CMB Series WURTH ELEKTRONIK
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2.2mH | 4A | WE-CMB Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7448680100
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2777678 |
Choke, Common Mode, Power Line, 450 µH, 10 A, WE-LPCC Series WURTH ELEKTRONIK
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1+ ¥1,031.19 (¥1,134.31) 3+ ¥1,010.57 (¥1,111.63) 5+ ¥989.95 (¥1,088.95) 10+ ¥969.32 (¥1,066.25) 20+ ¥948.70 (¥1,043.57) 50+ ¥928.08 (¥1,020.89) More Pricing... |
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450µH | 9.5A | WE-LPCC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7448014501
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2431568 |
Choke, Common Mode, Power Line, 400 µH, 4.5 A, WE-CMBNC Series WURTH ELEKTRONIK
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400µH | 4.5A | WE-CMBNC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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744821150
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2894614 |
Choke, Common Mode, Power Line, 5 mH, 1A, WE-CMB Series WURTH ELEKTRONIK
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5mH | 1A | WE-CMB Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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SMV60
|
1187672 |
Choke, Differential Mode, 120 µH, SMV Series ROXBURGH EMC
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1+ ¥916.07 (¥1,007.68) 10+ ¥827.02 (¥909.72) 50+ ¥730.18 (¥803.20) 100+ ¥660.06 (¥726.07) 250+ ¥610.27 (¥671.30) |
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120µH | 6A | SMV Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7448041104
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2431578 |
Choke, Common Mode, Power Line, 4 mH, 11 A, WE-CMBNC Series WURTH ELEKTRONIK
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4mH | 11A | WE-CMBNC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7448262013
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1636304 |
Choke, Common Mode, Power Line, 1.3 mH, 20 A, WE-CMB Series WURTH ELEKTRONIK
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7448225007
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2894620 |
Choke, Common Mode, Power Line, 700 µH, 5A, WE-CMB HC Series WURTH ELEKTRONIK
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1+ ¥855.57 (¥941.13) 5+ ¥848.82 (¥933.70) 10+ ¥842.07 (¥926.28) 20+ ¥796.54 (¥876.19) 40+ ¥751.01 (¥826.11) 90+ ¥705.47 (¥776.02) More Pricing... |
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700µH | 5A | WE-CMB HC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CM5740Z241B-10
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2292344 |
Choke, Common Mode, 20 A LAIRD
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- | 20A | CM5740 Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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SU9V-05020
|
9265821 |
Choke, Common Mode, Suppression, 2 mH, 500 mA, SU9V Series MULTICOMP PRO
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2mH | 500mA | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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74482210002
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2894619 |
Choke, Common Mode, Power Line, 175 µH, 10A, WE-CMB HC Series WURTH ELEKTRONIK
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1+ ¥855.57 (¥941.13) 5+ ¥848.82 (¥933.70) 10+ ¥842.07 (¥926.28) 20+ ¥796.54 (¥876.19) 40+ ¥751.01 (¥826.11) 90+ ¥705.47 (¥776.02) More Pricing... |
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175µH | 10A | WE-CMB HC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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744822222
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2894615 |
Choke, Common Mode, Power Line, 2.2 mH, 2A, WE-CMB Series WURTH ELEKTRONIK
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7448227005
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2894621 |
Choke, Common Mode, Power Line, 450 µH, 6.5A, WE-CMB HC Series WURTH ELEKTRONIK
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450µH | 6.5A | WE-CMB HC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7448680140
|
2777680 |
Choke, Common Mode, Power Line, 230 µH, 16 A, WE-LPCC Series WURTH ELEKTRONIK
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230µH | 16A | WE-LPCC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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SC-03-10G
|
2364242 |
Filter, Line, Common Mode, AC, 1 mH, SC-G Series KEMET
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1mH | 3A | SC-G Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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744825605
|
2894617 |
Choke, Common Mode, Power Line, 5 mH, 6A, WE-CMB Series WURTH ELEKTRONIK
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1+ ¥894.60 (¥984.06) 2+ ¥887.10 (¥975.81) 3+ ¥879.59 (¥967.55) 5+ ¥872.09 (¥959.30) 10+ ¥864.58 (¥951.04) 20+ ¥847.29 (¥932.02) More Pricing... |
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5mH | 6A | WE-CMB Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7446326002
|
2894628 |
Choke, Common Mode, Power Line, 1.8 mH, 6A, WE-LF Series WURTH ELEKTRONIK
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1.8mH | 6A | WE-LF Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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7448229004
|
2894622 |
Choke, Common Mode, Power Line, 350 µH, 8.5A, WE-CMB HC Series WURTH ELEKTRONIK
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1+ ¥855.57 (¥941.13) 5+ ¥848.82 (¥933.70) 10+ ¥842.07 (¥926.28) 20+ ¥796.54 (¥876.19) 40+ ¥751.01 (¥826.11) 90+ ¥705.47 (¥776.02) More Pricing... |
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350µH | 8.5A | WE-CMB HC Series | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||