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

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TRACOPOWER 33.3 μH Common Mode Choke RS Stock No.: 249-6709 Mfr. Part No.: TCK-075 Datasheets: Kr. 70,71 Each	TRACOPOWER	33.3 μH	TCK	9 mΩ	10 kHz	-	-	-	-	-	-	-	-	-	-
Bourns 51 μH Common Mode Choke 0.7Ω RS Stock No.: 247-5913P Mfr. Part No.: SRF3225TAC-510Y Datasheets: Kr. 4,793 Each (Supplied on a Reel)	Bourns	51 μH	SRF3225TAC	2.6 kΩ	100 kHz	0.7Ω	-	-	-	-	-	-	-	-	-
Wurth Elektronik 10000 μH Common Mode Choke 1.2Ω RS Stock No.: 217-7244 Mfr. Part No.: 744220103 Datasheets: Kr. 19,768 Each (In a Tray of 1000)	Wurth Elektronik	10000 μH	WE-SL2 SMT	25 kΩ	10 kHz	1.2Ω	-	-	-	2	-	-	-	-	-
Murata 100 μH 200 mA Common Mode Choke 2Ω RS Stock No.: 871-2073 Mfr. Part No.: DLW43SH101XK2L Datasheets: Kr. 10,722 Each (In a Bag of 5)	Murata	100 μH	DLW43S	-	1 MHz	2Ω	200 mA	4.5 x 3.2 x 2.6mm	-40°C → +125°C	-	-	Surface Mount	-	Solder Pad	1812 (4532M)
KEMET 600 μH Common Mode Choke 1.39mΩ RS Stock No.: 242-7702 Mfr. Part No.: SCF25XV-280-2R1A005JV Datasheets: Kr. 125,10 Each	KEMET	600 μH	SCF	-	40 MHz	1.39mΩ	-	-	-	-	-	-	-	-	-
Wurth Elektronik 20000 μH Common Mode Choke 2.6Ω RS Stock No.: 217-7247 Mfr. Part No.: 744220203 Datasheets: Kr. 28,37 Each	Wurth Elektronik	20000 μH	WE-SL2 SMT	50 kΩ	10 kHz	2.6Ω	-	-	-	2	-	-	-	-	-
KEMET 0.5 μH 3.0 A Common Mode Choke 16mΩ 150V RS Stock No.: 186-0628 Mfr. Part No.: SH-201 Datasheets: Kr. 14,323 Each (In a Box of 500)	KEMET	0.5 μH	SH	-	100 kHz	16mΩ	3.0 A	10 x 12 x 12.5mm	-25°C → +80°C	2	-	Through Hole	150V	PCB Pin	-
Wurth Elektronik 2 x 51 μH 1 A Common mode filter 2 x 0.16Ω 80V RS Stock No.: 124-1540 Mfr. Part No.: 744227 Datasheets: Kr. 28,416 Each (In a Pack of 5)	Wurth Elektronik	2 x 51 μH	WE-SL2	-	1 KHz	2 x 0.16Ω	1 A	9.2 x 6 x 5mm	-40°C → +125°C	-	-	Surface Mount	80V	Surface Mount	-
Schaffner 39 mH 0.4 A Common Mode Choke 1.5Ω RS Stock No.: 133-6128 Mfr. Part No.: RN212-0.4-02-39M Datasheets: Kr. 21,69 Each (In a Bag of 5)	Schaffner	39 mH	RN	-	10 KHz	1.5Ω	0.4 A	12.5 x 18 x 20mm	-40°C → +100°C	-	-	Through Hole	-	Solder Pad	-
Murata 2 A Common Mode Choke 34mΩ RS Stock No.: 104-8553P Mfr. Part No.: DLW5BTM102SQ2L Datasheets: Kr. 10,908 Each (Supplied on a Reel)	Murata	-	DLW5BT	1000 Ω	100 MHz	34mΩ	2 A	5 x 5 x 2.35mm	-40°C → +85°C	-	-	Surface Mount	-	Solder Pad	2020
Murata Common Mode Choke 2.6Ω RS Stock No.: 223-5041P Mfr. Part No.: DLW32MH101XT2L Datasheets: Kr. 8,234 Each (Supplied on a Reel)	Murata	-	DLW32MH	-	0.1 MHz	2.6Ω	-	-	-	2	-	-	-	-	-
KEMET 700 μH Common Mode Choke 1.68mΩ RS Stock No.: 242-7763 Mfr. Part No.: SCF29XV-250-2R2A008JV Datasheets: Kr. 119,983 Each (In a Tray of 30)	KEMET	700 μH	SCF	-	40 MHz	1.68mΩ	-	-	-	-	-	-	-	-	-
KEMET 110 μH Common Mode Choke 0.00065Ω RS Stock No.: 238-5428 Mfr. Part No.: SCR25XV-350-2R4A003JV Datasheets: Kr. 109,71 Each	KEMET	110 μH	SCR-XV	-	100 kHz	0.00065Ω	-	-	-	-	-	-	-	-	-
KEMET 35 mH 500 mA Common Mode Choke 1.8Ω RS Stock No.: 863-3796 Mfr. Part No.: SS11V-R05350-CH Datasheets: Kr. 21,332 Each (In a Bag of 5)	KEMET	35 mH	SS	-	1 KHz	1.8Ω	500 mA	22 x 14.5 x 21.5mm	-25°C → +75°C	-	-	Through Hole	-	Solder Pad	-
Wurth Elektronik 2 x 700 μH 4 A Common Mode Choke 2 x 0.027Ω RS Stock No.: 904-0401P Mfr. Part No.: 74466240007 Datasheets: Kr. 50,66 Each (Supplied in a Box)	Wurth Elektronik	2 x 700 μH	WE-LF	27 mΩ	10 KHz	2 x 0.027Ω	4 A	18 (Dia.) x 13mm	-40°C → +125°C	-	-	Through Hole	-	-	-
TRACOPOWER 10 μH Common Mode Choke 350mΩ RS Stock No.: 228-7873 Mfr. Part No.: TCK-146 Datasheets: Kr. 266,68 1 Tape of 10	TRACOPOWER	10 μH	TCK	-	1 kHz	350mΩ	-	-	-	-	-	-	-	-	-
EPCOS 250 nH Common Mode Choke RS Stock No.: 246-9866P Mfr. Part No.: B82789C0104N002 Datasheets: Kr. 14,99 Each (Supplied on a Reel)	EPCOS	250 nH	B82789C0/S0	1.5 Ω	50 Hz, 60 Hz	-	-	-	-	-	-	-	-	-	-
KEMET 24 μH 2 A Common Mode Choke 41.1mΩ RS Stock No.: 183-6846 Mfr. Part No.: SHBC8S-0R6A0024V Datasheets: Kr. 29,508 Each (In a Pack of 5)	KEMET	24 μH	SHBC	-	100 kHz	41.1mΩ	2 A	16 (Dia.) x 8.8mm	-40°C → +125°C	2	-	Through Hole	-	Solder Pad	-
Murata Common Mode Choke 2.3Ω RS Stock No.: 223-5031 Mfr. Part No.: DLM0QSB350HY2D Datasheets: Kr. 0,313 Each (On a Reel of 15000)	Murata	-	DLM0Q	35 Ω	100 MHz	2.3Ω	-	-	-	2	-	-	-	-	-
Abracon Common Mode Choke RS Stock No.: 249-9361 Mfr. Part No.: ACMP-5025-251-T Datasheets: Kr. 9,799 Each (In a Pack of 10)	Abracon	-	ACMP-9050	250 Ω	100 MHz	-	-	-	-	-	-	-	-	-	-