Common Mode Chokes

Common mode (CM) chokes are a type of electrical filter that reduces unwanted interference, by blocking high frequency noise but lets the desired signal to pass. Common mode noise current is usually found in sources such as unwanted radio signals, unshielded electronics, inverters and motors. If this noise is not filtered, then it can cause problems in your electronics and electrical circuits.

RS have a great range of inductors including these common mode chokes with various inductance values and offer high attenuation over a wide frequency range.

Why use common mode chokes?

Common mode chokes can be used to help the prevention of electromagnetic interference and radio frequency interface. By using these chokes you can help stop your electronic devices from malfunctioning.

Things to consider before purchasing a common mode choke:

Impedance
Frequency bandwidth
Current handling

Typical Applications include:

Common mode chokes are often used in electrical, industrial and telecommunication applications to help reduce or remove noise and electromagnetic interference. They can be found in:

Data storage systems
Digital video camera
Industrial systems
Professional audio

1423 Products showing for Common Mode Chokes

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KEMET 1.3 mH 2 A Common Mode Choke 80mΩ 250V RS Stock No.: 186-0757 Mfr. Part No.: SSRH7HS-M20013 Datasheets: $1.746 Each (In a Box of 100)	KEMET	1.3 mH	SSRH7HS-M	-	10 kHz	80mΩ	2 A	18 x 14.5 x 12mm	-25°C → +120°C	-	-	Through Hole	250V	Solder Pad	-
Murata Common Mode Choke 3.6Ω RS Stock No.: 223-5036 Mfr. Part No.: DLM0QSN650HY2D Datasheets: $0.084 Each (On a Reel of 15000)	Murata	-	DLM0Q	65 Ω	100 MHz	3.6Ω	-	-	-	2	-	-	-	-	-
KEMET 8 mH 200 mA Common Mode Choke 6Ω RS Stock No.: 863-3872P Mfr. Part No.: SU9V-02080 Datasheets: $2.262 Each (Supplied in a Box)	KEMET	8 mH	SU-9V	-	1 KHz	6Ω	200 mA	17 x 11 x 17mm	-25°C → +80°C	-	-	Through Hole	-	Solder Pad	-
KEMET 16.9 mH 800 mA Common Mode Choke 560mΩ 250V RS Stock No.: 186-0738 Mfr. Part No.: SSRH7H-M08169 Datasheets: $1.707 Each (In a Box of 100)	KEMET	16.9 mH	SSRH7H-M	-	10 kHz	560mΩ	800 mA	18 x 14.5 x 12mm	-25°C → +120°C	-	-	Through Hole	250V	Solder Pad	-
Wurth Elektronik 51 μH 400 mA Common mode filter 2 x 0.32Ω 80V RS Stock No.: 669-4181P Mfr. Part No.: 744242510 Datasheets: $6.11 Each (Supplied on a Reel)	Wurth Elektronik	51 μH	WE-SLM	2500 Ω	100 KHz	2 x 0.32Ω	400 mA	6 x 3.3 x 3.3mm	-40 → +125 °C	-	-	Surface Mount	80V	Surface Mount	-
KEMET 6.3 mH Common Mode Choke 10.91mΩ RS Stock No.: 242-7668 Mfr. Part No.: SCF25XV-100-1R3A016JV Datasheets: $16.026 Each (In a Tray of 35)	KEMET	6.3 mH	SCF	-	40 MHz	10.91mΩ	-	-	-	-	-	-	-	-	-
Wurth Elektronik 3 x 100 μH 450 mA Common mode filter 3 x 0.45Ω 80V RS Stock No.: 904-0278 Mfr. Part No.: 744253101 Datasheets: $4.24 Each	Wurth Elektronik	3 x 100 μH	WE-SL2	-	1 KHz	3 x 0.45Ω	450 mA	9.2 x 6.6 x 2.5mm	-40°C → +125°C	-	-	Surface Mount	80V	Surface Mount	-
Murata Common Mode Choke RS Stock No.: 260-7223 Mfr. Part No.: DLW21SH121HQ2L Datasheets: $0.452 Each (On a Reel of 2000)	Murata	-	DLW	120 Ω	100 MHz	-	-	-	-	-	-	-	-	-	-
TDK 100 μH 150 mA Common mode filter 1.5Ω 80V RS Stock No.: 916-4156 Mfr. Part No.: ACT1210-101-2P-TL00 Datasheets: $2.394 Each (In a Pack of 5)	TDK	100 μH	ACT	5100 Ω	10 MHz	1.5Ω	150 mA	3.9 x 2.5 x 2.5mm	-55°C → +150°C	2	-	Surface Mount	80V	Surface Mount	1210 (3225M)
KEMET 67 μH 2 A Common Mode Choke 67.8mΩ RS Stock No.: 183-6674 Mfr. Part No.: HHBC8S-0R6A0067V Datasheets: $7.316 Each (In a Pack of 5)	KEMET	67 μH	HHBC	-	100 kHz	67.8mΩ	2 A	17 (Dia.) x 9.6mm	-40°C → +125°C	2	-	Through Hole	-	Solder Pad	-
TRACOPOWER Common Mode Choke RS Stock No.: 745-1231 Mfr. Part No.: TCK-076 Datasheets: $9.87 Each	TRACOPOWER	-	-	-	-	-	-	-	-	-	-	-	-	-	-
KEMET 15.4 mH 0.7 A Common Mode Choke 0.63Ω 250V RS Stock No.: 186-1040 Mfr. Part No.: SSRH7HS-M07154 Datasheets: $2.832 Each (In a Pack of 5)	KEMET	15.4 mH	SSRH7HS-M	-	10 kHz	0.63Ω	0.7 A	18 x 14.5 x 12mm	-25°C → +120°C	-	-	Through Hole	250V	Solder Pad	-
TDK 22 μH 250 mA Common mode filter 0.5Ω 80V RS Stock No.: 170-3194 Mfr. Part No.: ACT1210-220-2P-TL00 Datasheets: $1.462 Each (On a Reel of 6000)	TDK	22 μH	ACT	500 mΩ	10 MHz	0.5Ω	250 mA	3.2 x 2.5 x 2.5mm	-55°C → +150°C	2	-	Surface Mount	80V	Surface Mount	1210 (3225M)
Wurth Elektronik 245 pH Common Mode Choke 2.5Ω RS Stock No.: 217-7631 Mfr. Part No.: 748020024 Datasheets: $1.32 Each (On a Tape of 5)	Wurth Elektronik	245 pH	WE-MK	2 Ω	100 MHz	2.5Ω	-	-	-	-	-	-	-	-	-
TDK 33.7 μH 6 A Common mode filter 14mΩ 80V RS Stock No.: 170-3271 Mfr. Part No.: ACM1211-102-2PL-TL01 Datasheets: $1.862 Each (On a Reel of 500)	TDK	33.7 μH	ACM	1000 Ω	100 MHz	14mΩ	6 A	12 x 11 x 6mm	-40°C → +85°C	2	-	Surface Mount	80V	Surface Mount	1211
Wurth Elektronik 2 x 10 mH 3 A Common Mode Choke 2 x 0.155Ω RS Stock No.: 163-7910 Mfr. Part No.: 7446923010 Datasheets: $11.766 Each (In a Box of 25)	Wurth Elektronik	2 x 10 mH	WE-LF	65 mΩ	10 KHz	2 x 0.155Ω	3 A	33.5 (Dia.) x 20mm	-40°C → +125°C	-	-	Through Hole	-	-	-
Bourns 10.4 μH Common Mode Choke RS Stock No.: 237-1688P Mfr. Part No.: SRF7035A-132Y Datasheets: $3.36 Each (Supplied on a Reel)	Bourns	10.4 μH	SRF7035A	1300 Ω	100 MHz	-	-	-	-	-	-	-	-	-	-
KEMET 1.5 mH Common Mode Choke 8.7mΩ RS Stock No.: 242-7628 Mfr. Part No.: SCF19XV-080-1R0A011JV Datasheets: $11.107 Each (In a Tray of 42)	KEMET	1.5 mH	SCF	-	40 MHz	8.7mΩ	-	-	-	-	-	-	-	-	-
KEMET 8 mH 200 mA Common Mode Choke 6Ω RS Stock No.: 863-3872 Mfr. Part No.: SU9V-02080 Datasheets: $2.498 Each (In a Bag of 5)	KEMET	8 mH	SU-9V	-	1 KHz	6Ω	200 mA	17 x 11 x 17mm	-25°C → +80°C	-	-	Through Hole	-	Solder Pad	-
KEMET 11.8 mH Common Mode Choke 21.35mΩ RS Stock No.: 242-7658 Mfr. Part No.: SCF25XV-070-1R1A022JH Datasheets: $17.285 Each (In a Tray of 30)	KEMET	11.8 mH	SCF	-	40 MHz	21.35mΩ	-	-	-	-	-	-	-	-	-