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Common Mode Chokes / Filters:

4,591 Products Found

Our range of Common Mode Chokes includes both radial leaded and SMD types.

A common mode choke is an electrical filter that blocks high frequency noise common to two or more data or power lines while allowing the desired DC or low-frequency signal to pass. Common mode (CM) noise current is typically radiated from sources such as unwanted radio signals, unshielded electronics, inverters and motors. Left unfiltered, this noise presents interference problems in electronics and electrical circuits.

How do common mode chokes work?

In normal or differential (single choke) mode, current travels on one line in one direction from the source to the load, and in the opposite direction on the return line that completes the circuit. In common mode, the noise current travels on both lines in the same direction.

This means that the combined magnetic flux adds to create an opposing field to block the noise. In differential mode, the current travels in opposite directions and the flux subtracts or cancels out so that the field does not oppose the normal mode signal.

How to choose a Common Mode Choke?

The main criteria for selecting a common mode choke are:
  1. Required impedance: How much attenuation of noise is needed?
  2. Required frequency range: Over what frequency bandwidth is the noise?
  3. Required current handling: How much differential mode current must it handle?

Types of common mode chokes

  1. High-Speed and Super-Speed Data Line EMI Chokes
  2. Data Line Common Mode EMI Chokes
  3. Data/Power Line Common Mode EMI Chokes
  4. Surface Mount Power Line Common Mode EMI Chokes
  5. Through-Hole Power Line Common Mode EMI Chokes

Applications for common mode chokes

Common mode choke coils are suited for noise suppression on lines with large current flows, such as AC/DC power supply lines. The distortion of the waveform is reduced. Common mode choke coils are suited for noise suppression on lines where signal waveform distortion causes a problem, such as video signal lines.

Common mode choke application example

As the auto industry’s boom continues, the adoption of electronic devices in automobiles has grown rapidly. Thanks to this trend, vehicles can now be equipped with a variety of features, such as infotainment systems, ADAS (advanced driver-assistance systems), navigation systems, OBD (on-board diagnostics), and others.

CAN bus (Controlled Area Network) is one of the communication standards that allows all these features to function in unison. It uses two-wire differential signalling to send and receive data from the different devices in the network. While the nodes of the bus can be near other EMI sources in the vehicle, the design of a robust CAN bus that can withstand all incoming noise is integral to delivering a reliable and safe vehicle. In addition to other filtering techniques, common mode chokes are one of the devices that are used to combat noise in a CAN bus.

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Common Mode Chokes / Filters

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3807306

RoHS

Each
1+
€9.890
30+
€7.790
Min: 1 / Mult: 1
8A
4.15mH
SCR-XV Series
3807195

RoHS

Date/Lot Code

Each
1+
€10.130
35+
€7.480
70+
€7.210
105+
€6.940
Min: 1 / Mult: 1
10A
2.05mH
SCT-XV Series
3807269

RoHS

Each
1+
€5.380
Min: 1 / Mult: 1
19A
160µH
SCR-XV Series
3807237

RoHS

Each
1+
€10.270
30+
€8.080
Min: 1 / Mult: 1
25A
210µH
SCT-XV Series
3807246

RoHS

Each
1+
€10.270
20+
€8.080
Min: 1 / Mult: 1
11A
1.21mH
SCT-XV Series
3807325

RoHS

Each
1+
€9.890
20+
€7.790
Min: 1 / Mult: 1
9A
2.95mH
SCR-XV Series
3807309

RoHS

Each
1+
€9.810
30+
€7.720
Min: 1 / Mult: 1
11A
2.2mH
SCR-XV Series
3807207

RoHS

Each
1+
€10.000
35+
€7.230
Min: 1 / Mult: 1
35A
72µH
SCT-XV Series
3807210

RoHS

Each
1+
€11.770
Min: 1 / Mult: 1
8A
2.6mH
SCT-XV Series
3807212

RoHS

Each
1+
€14.170
Min: 1 / Mult: 1
11A
1.35mH
SCT-XV Series
3807272

RoHS

Each
1+
€9.900
35+
€7.310
70+
€7.050
105+
€6.790
Min: 1 / Mult: 1
5A
8.9mH
SCR-XV Series
3807308

RoHS

Each
1+
€12.070
30+
€9.050
Min: 1 / Mult: 1
9A
2.95mH
SCR-XV Series
3807239

RoHS

Each
1+
€12.080
Min: 1 / Mult: 1
30A
83µH
SCT-XV Series
3807260

RoHS

Each
1+
€6.480
Min: 1 / Mult: 1
15A
220µH
SCR-XV Series
3807242

RoHS

Each
1+
€10.270
Min: 1 / Mult: 1
6A
4.33mH
SCT-XV Series
3807192

RoHS

Each
1+
€9.710
Min: 1 / Mult: 1
5A
5.86mH
SCT-XV Series
3807201

RoHS

Each
1+
€9.710
35+
€7.170
Min: 1 / Mult: 1
19A
510µH
SCT-XV Series
3807213

RoHS

Each
1+
€9.710
30+
€7.640
Min: 1 / Mult: 1
13A
1.15mH
SCT-XV Series
3807182

RoHS

Each
1+
€5.620
Min: 1 / Mult: 1
22A
60µH
SCT-XV Series
3812764

RoHS

Date/Lot Code

Each
1+
€1.750
5+
€1.640
10+
€1.540
25+
€1.310
50+
€1.240
Min: 1 / Mult: 1
950mA
7.1mH
WE-FC Series
3807299

RoHS

Each
1+
€9.320
Min: 1 / Mult: 1
24A
440µH
SCR-XV Series
3807243

RoHS

Each
1+
€10.360
20+
€8.150
Min: 1 / Mult: 1
7A
3mH
SCT-XV Series
3807315

RoHS

Each
1+
€11.540
Min: 1 / Mult: 1
21A
610µH
SCR-XV Series
3807196

RoHS

Each
1+
€9.710
35+
€7.170
Min: 1 / Mult: 1
11A
1.35mH
SCT-XV Series
3807284

RoHS

Each
1+
€9.320
Min: 1 / Mult: 1
28A
310µH
SCR-XV Series
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