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

1420 Products showing for Common Mode Chokes

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Abracon Common Mode Choke RS Stock No.: 245-0445 Mfr. Part No.: ACMP-Q1260-102-T Datasheets: $2.732 Each (On a Reel of 500)	Abracon	-	ACMP	1000 Ω	100 MHz	-	-	-	-	-	-	-	-	-	-
Wurth Elektronik 2 x 1 mH 18.5 A Common Mode Choke 2 x 5.5mΩ RS Stock No.: 172-5432 Mfr. Part No.: 744830010185 Datasheets: $25.851 Each (In a Tray of 12)	Wurth Elektronik	2 x 1 mH	WE-CMBHV	-	10 KHz	2 x 5.5mΩ	18.5 A	41.5 x 23 x 39.5mm	-40°C → +125°C	-	-	Through Hole	-	Solder Pad	-
KEMET 220 μH Common Mode Choke 0.65mΩ RS Stock No.: 242-7709 Mfr. Part No.: SCF25XV-350-2R4A003JV Datasheets: $16.368 Each (In a Tray of 35)	KEMET	220 μH	SCF	-	40 MHz	0.65mΩ	-	-	-	-	-	-	-	-	-
Murata Common Mode Choke 0.034Ω RS Stock No.: 223-5059P Mfr. Part No.: DLW5ATH501MQ2L Datasheets: $2.992 Each (Supplied on a Reel)	Murata	-	DLW5ATH	500 Ω	100 MHz	0.034Ω	-	-	-	2	-	-	-	-	-
KEMET 59.6 mH 400 mA Common Mode Choke 2.02Ω 250V RS Stock No.: 186-0734 Mfr. Part No.: SSRH7H-M04596 Datasheets: $1.707 Each (In a Box of 100)	KEMET	59.6 mH	SSRH7H-M	-	10 kHz	2.02Ω	400 mA	18 x 14.5 x 12mm	-25°C → +120°C	-	-	Through Hole	250V	Solder Pad	-
KEMET 4.3 mH 1.5 A Common Mode Choke 0.14Ω 250V RS Stock No.: 186-1101 Mfr. Part No.: SSRH7H-M15043 Datasheets: $3.032 Each (In a Pack of 5)	KEMET	4.3 mH	SSRH7H-M	-	10 kHz	0.14Ω	1.5 A	18 x 14.5 x 12mm	-25°C → +120°C	-	-	Through Hole	250V	Solder Pad	-
KEMET 9.2 mH 3 A Common Mode Choke 0.079Ω RS Stock No.: 183-6744 Mfr. Part No.: SSRH24NVS-30092 Datasheets: $4.76 Each	KEMET	9.2 mH	SSRH	-	10 kHz	0.079Ω	3 A	25.5 x 20 x 31mm	-25°C → +120°C	2	-	Through Hole	-	Solder Pad	-
Wurth Elektronik 2 x 1 mH 20.5 A Common Mode Choke 2 x 5.5mΩ RS Stock No.: 126-0973 Mfr. Part No.: 744831010205 Datasheets: $29.33 Each	Wurth Elektronik	2 x 1 mH	WE-CMBHV	-	10 KHz	2 x 5.5mΩ	20.5 A	46.5 x 28 x 44.5mm	-40°C → +125°C	-	-	Through Hole	-	Solder Pad	-
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: $1.95 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	-	-	-	-
KEMET 81 μH 6 A Common Mode Choke 24.7mΩ RS Stock No.: 183-6618 Mfr. Part No.: SHBC13-1R2A0081V Datasheets: $7.545 Each (In a Tray of 30)	KEMET	81 μH	SHBC	-	100 kHz	24.7mΩ	6 A	30 (Dia.) x 15.7mm	-40°C → +125°C	2	-	Through Hole	-	Solder Pad	-
EPCOS 51 μH Common Mode Choke RS Stock No.: 246-9876 Mfr. Part No.: B82790S0513N201 Datasheets: $4.85 Each	EPCOS	51 μH	B82790C0/S0	0.14 Ω	50 Hz, 60 Hz	-	-	-	-	-	-	-	-	-	-
KEMET 74.5 mH 400 mA Common Mode Choke 2.5Ω RS Stock No.: 183-6700 Mfr. Part No.: SSR10VS-04745 Datasheets: $3.482 Each (In a Pack of 5)	KEMET	74.5 mH	SSR10VS	-	10 kHz	2.5Ω	400 mA	23.5 x 13 x 21mm	-25°C → +120°C	2	-	Through Hole	-	Solder Pad	-
Bourns 100 μH 0.20 A Common Mode Choke 1.5Ω RS Stock No.: 210-7540 Mfr. Part No.: SRF4530A-101Y Datasheets: $0.679 Each (On a Reel of 500)	Bourns	100 μH	SRF4530A	7.5 kΩ	100 kHz	1.5Ω	0.20 A	4.5 x 3.2mm	-55°C → +150°C	-	AEC-Q200	Surface Mount	-	Surface Mount	-
KEMET 51 μH 5 A Common Mode Choke 28mΩ RS Stock No.: 183-6873 Mfr. Part No.: HHBC12-1R0A0051V Datasheets: $6.78 Each	KEMET	51 μH	HHBC	-	100 kHz	28mΩ	5 A	26 (Dia.) x 12.4mm	-40°C → +125°C	2	-	Through Hole	-	Solder Pad	-
Wurth Elektronik 20000 μH Common Mode Choke 2.6Ω RS Stock No.: 217-7247 Mfr. Part No.: 744220203 Datasheets: $8.31 Each	Wurth Elektronik	20000 μH	WE-SL2 SMT	50 kΩ	10 kHz	2.6Ω	-	-	-	2	-	-	-	-	-
KEMET 3 mH 10 A Common Mode Choke 30mΩ RS Stock No.: 863-3778 Mfr. Part No.: SC-10-30J Datasheets: $10.85 Each (In a Bag of 5)	KEMET	3 mH	SC-J	-	100 KHz	30mΩ	10 A	34 x 24 x 33mm	-25°C → +120°C	-	-	Through Hole	-	Solder Pad	-
Bourns 1 mH 0.5 A Common Mode Choke 0.40Ω RS Stock No.: 874-9687 Mfr. Part No.: DR331-105BE Datasheets: $1.212 Each (In a Bag of 5)	Bourns	1 mH	DR331	-	100 KHz	0.40Ω	0.5 A	7.3 x 5.4 x 4.7mm	-40°C → +135°C	-	-	Axial	-	Solder Pad	-
KEMET 900 μH Common Mode Choke 1.84mΩ RS Stock No.: 242-7698 Mfr. Part No.: SCF25XV-240-2R0A006JV Datasheets: $20.01 Each	KEMET	900 μH	SCF	-	40 MHz	1.84mΩ	-	-	-	-	-	-	-	-	-
KEMET 9.7 mH 1.3 A Common Mode Choke 0.27Ω RS Stock No.: 183-6885 Mfr. Part No.: SSR10H-13097 Datasheets: $3.482 Each (In a Pack of 5)	KEMET	9.7 mH	SSR10H	-	10 kHz	0.27Ω	1.3 A	22 x 18 x 13.5mm	-25°C → +120°C	2	-	Through Hole	-	Solder Pad	-
Abracon Common Mode Choke RS Stock No.: 249-9366 Mfr. Part No.: ACMP-9050-222-T Datasheets: $1.814 Each (On a Reel of 700)	Abracon	-	ACMP-9050	2200 Ω	100 MHz	-	-	-	-	-	-	-	-	-	-