MPN

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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Last RS stock RS PRO 2 mH 2 A Common Mode Choke 45 mΩ 250V RS Stock No. 123-4270 Subtotal (1 pack of 5 units) £28.60(exc. VAT) £5.72/unit Quantity		2mH	Common Mode Choke	2A	-	-	-	-	10kHz	-	-	-	-	-	-	-	No	250V	Through Hole	-	-	±30 %	-	-	7.5mm	18mm	15mm	45mΩ	RoHS, REACH	Solder	-
Last RS stock RS PRO 100 μH 500 mA Common Mode Choke 260 mΩ RS Stock No. 104-8399 Subtotal (1 pack of 5 units) £15.20(exc. VAT) £3.04/unit Quantity		100μH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	260mΩ	ISO 9001:2015, REACH, RoHS, ISO 14001:2015	Solder Pad	-
Last RS stock RS PRO 2 mH 10 A Common Mode Choke 7 mΩ 250V RS Stock No. 123-4268 Subtotal (1 unit) £18.59(exc. VAT) £18.59/unit Quantity		2mH	Common Mode Choke	10A	-	-	-	-	10kHz	-	-	-	-	-	-	-	No	250V	Through Hole	-	-	±30 %	-	-	18.5mm	33mm	27.5mm	7mΩ	REACH, RoHS	Solder	-
Currently unavailable RS PRO 1 mH 500 mA Common Mode Choke 250 mΩ RS Stock No. 173-0177 Subtotal (1 box of 300 units) £588.30(exc. VAT) £1.961/unit Quantity		1mH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	250mΩ	RoHS, ISO 14001:2015, ISO 9001:2015, REACH	Solder Pad	-
Currently unavailable RS PRO 47 μH 500 mA Common Mode Choke 130 mΩ RS Stock No. 104-8403 Subtotal (1 pack of 5 units) £15.29(exc. VAT) £3.058/unit Quantity		47μH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	130mΩ	RoHS, ISO 9001:2015, ISO 14001:2015, REACH	Solder Pad	-
Currently unavailable RS PRO 47 μH 500 mA Common Mode Choke 180 mΩ RS Stock No. 104-8407 Subtotal (1 pack of 5 units) £20.24(exc. VAT) £4.048/unit Quantity		47μH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	180mΩ	RoHS, ISO 14001:2015, ISO 9001:2015, REACH	Solder Pad	-
Currently unavailable RS PRO 2.2 mH 400 mA Common Mode Choke 450 mΩ RS Stock No. 104-8402 Subtotal (1 pack of 5 units) £15.68(exc. VAT) £3.136/unit Quantity		2.2mH	Common Mode Choke	400mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	450mΩ	ISO 14001:2015, ISO 9001:2015, RoHS, REACH	Solder Pad	-
Last RS stock RS PRO 1 mH 500 mA Common Mode Choke 250 mΩ RS Stock No. 104-8400 Subtotal (1 pack of 5 units) £16.36(exc. VAT) £3.272/unit Quantity		1mH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	250mΩ	RoHS, ISO 14001:2015, ISO 9001:2015, REACH	Solder Pad	-
Last RS stock RS PRO 100 μH 500 mA Common Mode Choke 260 mΩ RS Stock No. 104-8399P Subtotal 5 units (supplied on a continuous strip) £15.20(exc. VAT) £3.04/unit Quantity		100μH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	260mΩ	ISO 9001:2015, REACH, RoHS, ISO 14001:2015	Solder Pad	-
Last RS stock RS PRO 4.7 mH 200 mA Common Mode Choke 860 mΩ RS Stock No. 104-8408 Subtotal (1 pack of 5 units) £19.99(exc. VAT) £3.998/unit Quantity		4.7mH	Common Mode Choke	200mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	860mΩ	RoHS, REACH, ISO 9001:2015, ISO 14001:2015	Solder Pad	-
Currently unavailable RS PRO 100 μH 500 mA Common Mode Choke 260 mΩ RS Stock No. 173-0176 Subtotal (1 box of 300 units) £544.20(exc. VAT) £1.814/unit Quantity		100μH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	260mΩ	ISO 9001:2015, REACH, RoHS, ISO 14001:2015	Solder Pad	-
Temporarily out of stock RS PRO 700 μH 4 A Common Mode Choke 27 mΩ 250V RS Stock No. 123-4267 Subtotal (1 pack of 5 units) £34.87(exc. VAT) £6.974/unit Quantity		700μH	Common Mode Choke	4A	-	-	-	-	10kHz	-	-	-	-	-	-	-	No	250V	Through Hole	-	-	-30 to 50 %	-	-	17mm	12.5mm	17.5mm	27mΩ	RoHS, REACH	Solder	-
Last RS stock RS PRO 1 mH 500 mA Common Mode Choke 250 mΩ RS Stock No. 104-8400P Subtotal 5 units (supplied on a continuous strip) £16.36(exc. VAT) £3.272/unit Quantity		1mH	Common Mode Choke	500mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	250mΩ	RoHS, ISO 14001:2015, ISO 9001:2015, REACH	Solder Pad	-
Last RS stock RS PRO 4.7 mH 200 mA Common Mode Choke 840 mΩ RS Stock No. 104-8404 Subtotal (1 pack of 5 units) £15.97(exc. VAT) £3.194/unit Quantity		4.7mH	Common Mode Choke	200mA	CMJ	-	-	-	-	-	-	-	70°C	0°C	-	2	No	-	Surface	-	-	-	-	-	5.8mm	4.3mm	7.6mm	840mΩ	ISO 14001:2015, ISO 9001:2015, REACH, RoHS	Solder Pad	-
In Stock TRACOPOWER 450 μH 5.2 A Common Mode Choke 25 mΩ 500V RS Stock No. 249-6688 Mfr. Part No. TCK-048 Subtotal (1 tube of 27 units) £122.27(exc. VAT) £122.27/tube Quantity	TRACOPOWER	450μH	Common Mode Choke	5.2A	TCK	-	25mΩ	-	100kHz	-	-	-	125°C	-40°C	-	-	No	500V	-	-	-	±35 %	-	-	-	12.3mm	11.5mm	25mΩ	No	-	-
In Stock TRACOPOWER 55.6 μH 1 A Common Mode Choke 30 mΩ 500V dc RS Stock No. 228-7882 Mfr. Part No. TCK-162 Subtotal (1 tape of 10 units) £41.78(exc. VAT) £41.78/tape Quantity	TRACOPOWER	55.6μH	Common Mode Choke	1A	TCK	-	30Ω	-	100kHz	-	-	-	125°C	-40°C	-	-	No	500V dc	-	-	-	±25 %	-	-	6mm	4.5mm	6.5mm	30mΩ	No	-	-
Limited stock Wurth Elektronik 150 μH 20 A Common Mode Choke 1.9 mΩ 250V ac RS Stock No. 168-3314 Mfr. Part No. 7448680180 Subtotal (1 unit) £6.36(exc. VAT) £6.36/unit Quantity	Wurth Elektronik	150μH	Common Mode Choke	20A	WE-LPCC	-	-	Tray	50Hz	-	-	-	115°C	-40°C	-	2	No	250V ac	Through Hole	-	-	±40 %	-	-	25mm	12mm	27.5mm	1.9mΩ	RoHS, REACH	Solder	-
Temporarily out of stock TDK 4.4 mH 0.6 A Common Mode Choke 400 mΩ 250V RS Stock No. 246-9852 Mfr. Part No. B82720S2601N040 Subtotal (1 unit) £1.74(exc. VAT) £1.74/unit Quantity	TDK	4.4mH	Common Mode Choke	0.6A	B82720S	Ferrite	0.4Ω	Tape & Reel	50Hz	-	-	-	40°C	-	-	-	No	250V	Surface	-	4	±30 %	-	-	-	-	15mm	400mΩ	RoHS, VDE, UL	-	-
In Stock Bourns 4.7 mH 0.2 A Common Mode Choke 0.7 Ω 42V ac/dc, 80 V ac/dc RS Stock No. 172-8528 Mfr. Part No. DR331-475BE Subtotal (1 reel of 1500 units) £567.00(exc. VAT) £0.378/unit Quantity	Bourns	4.7mH	Common Mode Choke	0.2A	DR331	Ferrite	-	Tape & Reel	100kHz	-	-	-	135°C	-40°C	-	-	No	42, 80V ac/dc	Axial	-	-	-	-	-	5.4mm	4.7mm	7.3mm	0.7Ω	RoHS	Solder Pad	-
Temporarily out of stock Wurth Elektronik 220 μH 12 A Common Mode Choke 9 mΩ 250V ac RS Stock No. 163-8148 Mfr. Part No. 744844221 Subtotal (1 tray of 20 units) £192.00(exc. VAT) £9.60/unit Quantity	Wurth Elektronik	220μH	Common Mode Choke	12A	WE-ExB	-	-	-	10kHz	-	-	-	125°C	-40°C	-	-	No	250V ac	Through Hole	-	-	±50 %	-	-	18.5mm	33mm	28mm	9mΩ	No	Solder Pad	-