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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TDK 1.5 μH 4 A Common mode filter 15mΩ 80V RS Stock No.: 916-4140 Mfr. Part No.: ACM7060-701-2PL-TL01 Datasheets: Kr. 17,132 Each (In a Pack of 5)	TDK	1.5 μH	ACM	700 Ω	100 MHz	15mΩ	4 A	7 x 6 x 3.5mm	-40°C → +85°C	2	-	Surface Mount	80V	Surface Mount	7060
Wurth Elektronik 5 mH 3 A Common Mode Choke 40mΩ RS Stock No.: 185-7446 Mfr. Part No.: 7448023005 Datasheets: Kr. 101,59 Each	Wurth Elektronik	5 mH	WE-CMBNC	-	10 kHz	40mΩ	3 A	18 x 14 x 22mm	-40°C → +125°C	-	-	Through Hole	-	Solder Pad	-
KEMET 5 mH 300 mA Common Mode Choke 3Ω RS Stock No.: 169-6904 Mfr. Part No.: SU9V-03050 Datasheets: Kr. 6,603 Each (In a Box of 1000)	KEMET	5 mH	SU-9V	-	1 KHz	3Ω	300 mA	17 x 11 x 17mm	-25°C → +80°C	-	-	Through Hole	-	Solder Pad	-
KEMET 1 mH 10 A Common Mode Choke 20mΩ RS Stock No.: 863-3787 Mfr. Part No.: SC-10-100 Datasheets: Kr. 52,328 Each (In a Bag of 5)	KEMET	1 mH	SC	-	100 KHz	20mΩ	10 A	34 x 24 x 34mm	-25°C → +105°C	-	-	Through Hole	-	Solder Pad	-
Wurth Elektronik 1 mH 7 A Common Mode Choke 6mΩ RS Stock No.: 185-7028 Mfr. Part No.: 7448027001 Datasheets: Kr. 57,392 Each (In a Tray of 40)	Wurth Elektronik	1 mH	WE-CMBNC	-	10 kHz	6mΩ	7 A	18 x 14 x 22mm	-40°C → +125°C	-	-	Through Hole	-	Solder Pad	-
KEMET 1.3 mH 3 A Common Mode Choke 0.06Ω RS Stock No.: 183-6696 Mfr. Part No.: SSR10VS-30013 Datasheets: Kr. 19,464 Each (In a Pack of 5)	KEMET	1.3 mH	SSR10VS	-	10 kHz	0.06Ω	3 A	23.5 x 13 x 21mm	-25°C → +120°C	2	-	Through Hole	-	Solder Pad	-
KEMET 1.7 μH 1.0 A Common Mode Choke 81mΩ 50V RS Stock No.: 186-0641 Mfr. Part No.: SH-S132 Datasheets: Kr. 19,666 Each (In a Box of 500)	KEMET	1.7 μH	SH	-	100 kHz	81mΩ	1.0 A	10 x 10.5 x 9mm	-25°C → +60°C	3	-	Through Hole	50V	PCB Pin	-
Wurth Elektronik 6 mH Common Mode Choke RS Stock No.: 245-8551 Mfr. Part No.: 744869161063 Datasheets: Kr. 27,548 Each (In a Tray of 45)	Wurth Elektronik	6 mH	WE-FCLP	-	10 kHz	-	-	-	-	-	-	-	-	-	-
Wurth Elektronik 250 μH Common Mode Choke 1.6Ω RS Stock No.: 217-7251 Mfr. Part No.: 744235251 Datasheets: Kr. 15,598 Each (On a Tape of 5)	Wurth Elektronik	250 μH	WE-CNSW SMT	10 kΩ	10 kHz	1.6Ω	-	-	-	-	-	-	-	-	-
Wurth Elektronik 550 mA Common Mode Choke 145mΩ 50V RS Stock No.: 756-8402P Mfr. Part No.: 744230900 Datasheets: Kr. 13,532 Each (Supplied on a Reel)	Wurth Elektronik	-	WE-CNSW	90 Ω	100 MHz	145mΩ	550 mA	1.6 x 0.85 x 1.1mm	-40°C → +105°C	-	-	Surface Mount	50V	Surface Mount	-
Wurth Elektronik 2 x 2 mH 600 mA Common mode filter 2 x 0.42Ω 80V RS Stock No.: 124-1876P Mfr. Part No.: 744221 Datasheets: Kr. 27,064 Each (Supplied on a Reel)	Wurth Elektronik	2 x 2 mH	WE-SL2	-	1 KHz	2 x 0.42Ω	600 mA	9.2 x 6 x 5mm	-40°C → +125°C	-	-	Surface Mount	80V	Surface Mount	-
Wurth Elektronik WE-TEFA Common mode filter 131 (1 Turn) Ω, 564 (2 Turn) Ω RS Stock No.: 185-7466 Mfr. Part No.: 782114076160 Datasheets: Kr. 11,088 Each (In a Pack of 10)	Wurth Elektronik	-	WE-TEFA	131 (1 Turn) Ω, 564 (2 Turn) Ω	100 MHz	-	-	16.5 Dia. x 16mm	-55°C → +140°C	-	AEC-Q200	-	-	-	-
RS PRO 47 μH 500 mA Common Mode Choke 180mΩ RS Stock No.: 173-0194 Datasheets: Kr. 21,624 Each (In a Box of 300)		47 μH	CMJ	-	-	180mΩ	500 mA	7.6 x 5.8 x 4.3mm	0°C → +70°C	2	-	Surface Mount	-	Solder Pad	-
Abracon Common Mode Choke RS Stock No.: 249-9354 Mfr. Part No.: ACMP-3225-900-T Datasheets: Kr. 2,482 Each (On a Reel of 2000)	Abracon	-	ACMP-9050	90 Ω	100 MHz	-	-	-	-	-	-	-	-	-	-
Allen Bradley Common Mode Choke RS Stock No.: 262-2060 Mfr. Part No.: 1321-M009 Datasheets: Kr. 817,73 Each	Allen Bradley	-	1321	-	-	-	-	-	-	-	-	-	-	-	-
KEMET 23 mH 500 mA Common Mode Choke 1.8Ω RS Stock No.: 863-3853 Mfr. Part No.: SS11VL-05230 Datasheets: Kr. 19,356 Each (In a Bag of 5)	KEMET	23 mH	SS	-	1 KHz	1.8Ω	500 mA	22 x 14.5 x 21.5mm	-25°C → +75°C	-	-	Through Hole	-	Solder Pad	-
EPCOS 4.4 mH Common Mode Choke RS Stock No.: 246-9851 Mfr. Part No.: B82720S2601N040 Datasheets: Kr. 14,381 Each (On a Reel of 250)	EPCOS	4.4 mH	B82720S	0.4 Ω	50 Hz	-	-	-	-	-	-	-	-	-	-
KEMET 700 μH Common Mode Choke 1.68mΩ RS Stock No.: 242-7764 Mfr. Part No.: SCF29XV-250-2R2A008JV Datasheets: Kr. 125,95 Each	KEMET	700 μH	SCF	-	40 MHz	1.68mΩ	-	-	-	-	-	-	-	-	-
TDK 33.7 μH 6 A Common mode filter 14mΩ 80V RS Stock No.: 170-3271 Mfr. Part No.: ACM1211-102-2PL-TL01 Datasheets: Kr. 10,413 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
Murata 130 mA Common Mode Choke 1.7Ω RS Stock No.: 839-0881 Mfr. Part No.: DLP2ADN900HL4L Datasheets: Kr. 3,066 Each (In a Bag of 5)	Murata	-	DLP2AD	90 Ω	100 MHz	1.7Ω	130 mA	2 x 1 x 0.82mm	-40°C → +85°C	4	-	Surface Mount	-	Solder Pad	0804