Common Mode Chokes / Filters:

3,533 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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2836796

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
Rs.91.580
50+
Rs.82.680
250+
Rs.73.790
500+
Rs.45.500
1000+
Rs.44.560
Min: 5 / Mult: 5
140nH
500mA
0805USBN Series
3648671RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
Rs.194.010
200+
Rs.179.660
500+
Rs.165.300
2500+
Rs.153.990
Min: 100 / Mult: 1
35µH
500mA
PTRF Series
3365737

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
Rs.178.740
10+
Rs.142.710
50+
Rs.125.830
100+
Rs.108.940
500+
Rs.102.930
More Pricing...
Min: 1 / Mult: 1
1.5µH
3A
SNT Series
3651768

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
Rs.27.910
50+
Rs.20.770
100+
Rs.19.120
250+
Rs.17.380
500+
Rs.16.370
More Pricing...
Min: 1 / Mult: 1
-
1.5A
VFS Series
3290858

RoHS

Each
1+
Rs.100.160
10+
Rs.81.300
50+
Rs.77.070
100+
Rs.66.020
500+
Rs.62.820
Min: 1 / Mult: 1
17.99µH
2.5A
SU-9HD Series
3365711

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
Rs.69.100
50+
Rs.66.470
100+
Rs.63.850
500+
Rs.61.820
1000+
Rs.39.350
Min: 10 / Mult: 10
10µH
500mA
SBT Series
3365739

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
Rs.413.850
10+
Rs.300.440
50+
Rs.284.750
100+
Rs.267.860
500+
Rs.263.030
Min: 1 / Mult: 1
6µH
1.5A
SNT Series
3290799

RoHS

Each
1+
Rs.233.110
10+
Rs.146.050
50+
Rs.143.240
Min: 1 / Mult: 1
17.9mH
700mA
SS21V
3290663

RoHS

Each
1+
Rs.579.870
10+
Rs.458.510
Min: 1 / Mult: 1
2mH
10A
SC Series
3290808

RoHS

Each
1+
Rs.261.200
10+
Rs.155.880
50+
Rs.153.070
Min: 1 / Mult: 1
77mH
400mA
SS21V
3290836

RoHS

Each
1+
Rs.373.540
10+
Rs.220.470
50+
Rs.203.660
Min: 1 / Mult: 1
2.8mH
4A
SS30V Series
3290568

RoHS

Each
1+
Rs.529.410
10+
Rs.346.860
50+
Rs.339.840
Min: 1 / Mult: 1
6µH
4A
SC-JKH Series
3290800

RoHS

Each
1+
Rs.233.110
10+
Rs.146.050
50+
Rs.140.430
100+
Rs.134.670
Min: 1 / Mult: 1
6.7mH
1.1A
SS21V
3365732

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
Rs.281.640
10+
Rs.203.570
50+
Rs.196.440
100+
Rs.189.310
500+
Rs.145.400
More Pricing...
Min: 1 / Mult: 1
10µH
1.5A
SNT Series
3678491

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
Rs.8.270
100+
Rs.6.790
500+
Rs.5.920
2500+
Rs.5.220
7500+
Rs.4.700
More Pricing...
Min: 10 / Mult: 10
-
100mA
DLM0QS Series
3678491RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
Rs.5.920
2500+
Rs.5.220
7500+
Rs.4.700
15000+
Rs.4.440
Min: 500 / Mult: 10
-
100mA
DLM0QS Series
3651768RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
Rs.19.120
250+
Rs.17.380
500+
Rs.16.370
1500+
Rs.15.970
Min: 100 / Mult: 1
-
1.5A
VFS Series
4258979

RoHS

Each
1+
Rs.5,287.860
5+
Rs.5,043.840
18+
Rs.4,799.810
54+
Rs.4,555.780
108+
Rs.4,471.500
Min: 1 / Mult: 1
1.72mH
40A
SCF-X Three Phase Series
4292097

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
Rs.12.450
100+
Rs.10.270
500+
Rs.8.970
2500+
Rs.7.750
5000+
Rs.7.310
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Min: 10 / Mult: 10
-
35mA
TCM-T Series
4210159

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Each
1+
Rs.402.810
3+
Rs.379.030
5+
Rs.355.250
10+
Rs.331.470
20+
Rs.305.490
More Pricing...
Min: 1 / Mult: 1
2.7mH
11A
04770x Series
4258970

RoHS

Each
1+
Rs.2,833.590
5+
Rs.2,664.170
27+
Rs.2,494.740
54+
Rs.2,325.310
108+
Rs.2,235.750
Min: 1 / Mult: 1
660µH
50A
SCF-X Three Phase Series
4292098RL

RoHS

Each (Supplied on Cut Tape)
Cut Tape
500+
Rs.8.730
2500+
Rs.8.140
5000+
Rs.7.660
10000+
Rs.7.190
Min: 500 / Mult: 10
-
50A
TCM-T Series
4258969

RoHS

Each
1+
Rs.2,833.590
5+
Rs.2,664.170
27+
Rs.2,494.740
54+
Rs.2,325.310
108+
Rs.2,235.750
Min: 1 / Mult: 1
950µH
45A
SCF-X Three Phase Series
4292097RL

RoHS

Each (Supplied on Cut Tape)
Cut Tape
500+
Rs.8.970
2500+
Rs.7.750
5000+
Rs.7.310
10000+
Rs.6.880
Min: 500 / Mult: 10
-
35mA
TCM-T Series
4354186RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
Rs.68.620
250+
Rs.65.020
500+
Rs.61.430
1000+
Rs.57.830
2500+
Rs.55.290
Min: 100 / Mult: 5
51µH
200mA
ACT Series
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