Common Mode Chokes / Filters:

3,655 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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1644840

RoHS

Each
1+
S$2.790
(S$3.0411)
50+
S$2.000
(S$2.180)
100+
S$1.980
(S$2.1582)
250+
S$1.960
(S$2.1364)
500+
S$1.940
(S$2.1146)
More Pricing...
Min: 1 / Mult: 1
27mH
700mA
B82731M Series
2442838RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$1.590
(S$1.7331)
500+
S$1.380
(S$1.5042)
1000+
S$1.300
(S$1.417)
3000+
S$1.210
(S$1.3189)
6000+
S$1.130
(S$1.2317)
Min: 100 / Mult: 10
100µH
150mA
ACT Series
1893881RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
S$0.329
(S$0.3586)
1000+
S$0.298
(S$0.3248)
2500+
S$0.297
(S$0.3237)
5000+
S$0.271
(S$0.2954)
Min: 500 / Mult: 10
-
130mA
EXC24CE Series
2442840

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
S$1.920
(S$2.0928)
100+
S$1.590
(S$1.7331)
500+
S$1.380
(S$1.5042)
1000+
S$1.300
(S$1.417)
3000+
S$1.210
(S$1.3189)
More Pricing...
Min: 10 / Mult: 10
22µH
250mA
ACT Series
2431565

RoHS

Each
1+
S$14.590
(S$15.9031)
10+
S$14.000
(S$15.260)
25+
S$13.400
(S$14.606)
50+
S$12.800
(S$13.952)
100+
S$12.210
(S$13.3089)
More Pricing...
Min: 1 / Mult: 1
1.6mH
2A
WE-CMBNC Series
2431608

RoHS

Each
1+
S$9.130
(S$9.9517)
10+
S$7.990
(S$8.7091)
25+
S$6.620
(S$7.2158)
50+
S$5.940
(S$6.4746)
100+
S$5.480
(S$5.9732)
More Pricing...
Min: 1 / Mult: 1
68mH
200mA
WE-UCF Series
2470374RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.814
(S$0.8873)
200+
S$0.736
(S$0.8022)
500+
S$0.658
(S$0.7172)
Min: 100 / Mult: 1
51µH
230mA
DLW43SH Series
1515601

RoHS

Each
5+
S$1.490
(S$1.6241)
50+
S$1.090
(S$1.1881)
250+
S$0.821
(S$0.8949)
500+
S$0.787
(S$0.8578)
1000+
S$0.718
(S$0.7826)
More Pricing...
Min: 5 / Mult: 5
-
-
DLW31SN Series
1515592

RoHS

Each
5+
S$0.730
(S$0.7957)
50+
S$0.524
(S$0.5712)
250+
S$0.368
(S$0.4011)
500+
S$0.349
(S$0.3804)
1000+
S$0.329
(S$0.3586)
More Pricing...
Min: 5 / Mult: 5
-
280mA
DLW21SN Series
2082723RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$3.240
(S$3.5316)
250+
S$3.160
(S$3.4444)
500+
S$3.070
(S$3.3463)
1000+
S$2.460
(S$2.6814)
Min: 100 / Mult: 1
40µH
900mA
WE-SL2 Series
1848210RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$4.020
(S$4.3818)
200+
S$3.880
(S$4.2292)
400+
S$3.430
(S$3.7387)
800+
S$2.970
(S$3.2373)
Min: 100 / Mult: 1
2.2mH
750mA
WE-SL5 Series
2455194RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$1.150
(S$1.2535)
250+
S$1.010
(S$1.1009)
500+
S$0.951
(S$1.0366)
1000+
S$0.900
(S$0.981)
2000+
S$0.850
(S$0.9265)
Min: 100 / Mult: 1
-
220mA
ACM Series
1848959

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$1.880
(S$2.0492)
50+
S$1.680
(S$1.8312)
250+
S$1.590
(S$1.7331)
500+
S$1.380
(S$1.5042)
1000+
S$1.140
(S$1.2426)
More Pricing...
Min: 5 / Mult: 5
-
650mA
WE-CNSW Series
2431563

RoHS

Each
1+
S$11.000
(S$11.990)
10+
S$10.660
(S$11.6194)
25+
S$10.320
(S$11.2488)
50+
S$9.970
(S$10.8673)
100+
S$9.660
(S$10.5294)
More Pricing...
Min: 1 / Mult: 1
8mH
1A
WE-CMBNC Series
2458114

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$1.960
(S$2.1364)
50+
S$1.770
(S$1.9293)
250+
S$1.570
(S$1.7113)
500+
S$0.939
(S$1.0235)
1000+
S$0.921
(S$1.0039)
More Pricing...
Min: 5 / Mult: 5
412nH
500mA
1206USB Series
2458101

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$2.110
(S$2.2999)
50+
S$1.650
(S$1.7985)
250+
S$1.300
(S$1.417)
500+
S$1.120
(S$1.2208)
1000+
S$1.010
(S$1.1009)
More Pricing...
Min: 5 / Mult: 5
47nH
500mA
0805USB Series
2458142

RoHS

Each
1+
S$3.680
(S$4.0112)
5+
S$3.410
(S$3.7169)
10+
S$3.140
(S$3.4226)
20+
S$2.820
(S$3.0738)
40+
S$2.490
(S$2.7141)
More Pricing...
Min: 1 / Mult: 1
15mH
150mA
BU9S Series
2458114RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$1.770
(S$1.9293)
250+
S$1.570
(S$1.7113)
500+
S$0.939
(S$1.0235)
1000+
S$0.921
(S$1.0039)
2000+
S$0.902
(S$0.9832)
Min: 100 / Mult: 5
412nH
500mA
1206USB Series
2458106RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$1.610
(S$1.7549)
250+
S$1.270
(S$1.3843)
500+
S$1.090
(S$1.1881)
1000+
S$0.831
(S$0.9058)
2000+
S$0.830
(S$0.9047)
Min: 100 / Mult: 1
322nH
500mA
0805USB Series
2458115RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$1.770
(S$1.9293)
250+
S$1.570
(S$1.7113)
500+
S$0.939
(S$1.0235)
1000+
S$0.921
(S$1.0039)
2000+
S$0.902
(S$0.9832)
Min: 100 / Mult: 5
510nH
500mA
1206USB Series
2458102

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$1.120
(S$1.2208)
50+
S$1.030
(S$1.1227)
250+
S$0.946
(S$1.0311)
500+
S$0.902
(S$0.9832)
1000+
S$0.866
(S$0.9439)
Min: 5 / Mult: 5
84nH
500mA
0805USB Series
2458097RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$1.230
(S$1.3407)
250+
S$1.100
(S$1.199)
500+
S$0.675
(S$0.7358)
1000+
S$0.662
(S$0.7216)
2000+
S$0.648
(S$0.7063)
Min: 100 / Mult: 1
63nH
500mA
0603USB Series
1848956RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$1.900
(S$2.071)
250+
S$1.800
(S$1.962)
500+
S$1.580
(S$1.7222)
1000+
S$1.300
(S$1.417)
2000+
S$1.280
(S$1.3952)
Min: 100 / Mult: 5
0.131µH
280mA
WE-CNSW Series
1848962RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
S$0.760
(S$0.8284)
250+
S$0.738
(S$0.8044)
Min: 100 / Mult: 5
-
400mA
WE-CNSW Series
2215831RL

RoHS

Each
Packaging Options
50+
S$2.570
(S$2.8013)
200+
S$2.420
(S$2.6378)
Min: 100 / Mult: 1
1.47mH
2.8A
-
776-800 of 3655 items
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