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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3648671

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$6.020
($6.923)
10+
$5.030
($5.7845)
50+
$4.600
($5.290)
100+
$3.860
($4.439)
200+
$3.570
($4.1055)
More Pricing...
Min: 1 / Mult: 1
35µH
500mA
PTRF Series
1187664

RoHS

Each
1+
$7.880
($9.062)
10+
$7.560
($8.694)
Min: 1 / Mult: 1
18mH
1A
CMV Series
3678491

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.170
($0.1955)
100+
$0.139
($0.1598)
500+
$0.122
($0.1403)
2500+
$0.108
($0.1242)
7500+
$0.097
($0.1116)
More Pricing...
Min: 10 / Mult: 10
-
100mA
DLM0QS Series
3678491RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
$0.122
($0.1403)
2500+
$0.108
($0.1242)
7500+
$0.097
($0.1116)
15000+
$0.092
($0.1058)
Min: 500 / Mult: 10
-
100mA
DLM0QS Series
4210159

RoHS

Each
1+
$8.250
($9.4875)
3+
$7.770
($8.9355)
5+
$7.280
($8.372)
10+
$6.790
($7.8085)
20+
$6.200
($7.130)
More Pricing...
Min: 1 / Mult: 1
2.7mH
11A
04770x Series
1636474

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
$2.290
($2.6335)
50+
$2.080
($2.392)
250+
$1.990
($2.2885)
500+
$1.760
($2.024)
1000+
$1.450
($1.6675)
More Pricing...
Min: 5 / Mult: 5
111nH
370mA
WE-CNSW Series
1636481

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
$2.150
($2.4725)
50+
$1.930
($2.2195)
250+
$1.830
($2.1045)
500+
$1.760
($2.024)
1000+
$1.450
($1.6675)
More Pricing...
Min: 5 / Mult: 5
2.578µH
200mA
WE-CNSW Series
2112779

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$3.020
($3.473)
10+
$2.510
($2.8865)
50+
$2.190
($2.5185)
100+
$2.060
($2.369)
200+
$2.030
($2.3345)
Min: 1 / Mult: 1
-
6A
ACM Series
9265791

RoHS

Each
1+
$3.090
($3.5535)
50+
$1.360
($1.564)
100+
$1.210
($1.3915)
250+
$1.090
($1.2535)
500+
$0.936
($1.0764)
More Pricing...
Min: 1 / Mult: 1
80µH
500mA
Multicomp Pro Chokes
1636469

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
$2.060
($2.369)
50+
$1.840
($2.116)
250+
$1.740
($2.001)
500+
$1.500
($1.725)
1000+
$1.240
($1.426)
More Pricing...
Min: 5 / Mult: 5
0.131µH
370mA
WE-CNSW Series
2292311

RoHS

Each
Packaging Options
10+
$1.370
($1.5755)
100+
$0.967
($1.112)
500+
$0.919
($1.0568)
1000+
$0.850
($0.9775)
2000+
$0.781
($0.8982)
More Pricing...
Min: 10 / Mult: 10
-
15A
CM2021 Series
1644921

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$2.850
($3.2775)
50+
$2.040
($2.346)
100+
$1.930
($2.2195)
250+
$1.780
($2.047)
500+
$1.720
($1.978)
More Pricing...
Min: 1 / Mult: 1
51µH
800mA
B82793S0 Series
2112877

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$2.450
($2.8175)
10+
$2.030
($2.3345)
50+
$1.880
($2.162)
200+
$1.870
($2.1505)
400+
$1.860
($2.139)
More Pricing...
Min: 1 / Mult: 1
-
5A
ACM-V Series
2309077

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$2.010
($2.3115)
50+
$1.450
($1.6675)
100+
$1.370
($1.5755)
250+
$1.330
($1.5295)
500+
$1.230
($1.4145)
More Pricing...
Min: 1 / Mult: 1
10µH
1.6A
SRF0905 Series
1503726

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$3.130
($3.5995)
10+
$2.300
($2.645)
50+
$2.280
($2.622)
100+
$2.250
($2.5875)
200+
$2.070
($2.3805)
More Pricing...
Min: 1 / Mult: 1
-
8A
ACM Series
2579300

RoHS

Each
1+
$11.180
($12.857)
3+
$10.480
($12.052)
5+
$9.760
($11.224)
10+
$9.050
($10.4075)
20+
$8.550
($9.8325)
More Pricing...
Min: 1 / Mult: 1
325µH
3.3A
TCK Series
2475042

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$1.410
($1.6215)
50+
$1.030
($1.1845)
100+
$0.983
($1.1304)
250+
$0.912
($1.0488)
500+
$0.866
($0.9959)
More Pricing...
Min: 1 / Mult: 1
-
2A
ACP Series
1515594

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
$0.783
($0.9004)
50+
$0.557
($0.6405)
250+
$0.458
($0.5267)
500+
$0.445
($0.5118)
1000+
$0.432
($0.4968)
More Pricing...
Min: 5 / Mult: 5
-
330mA
DLW21SN Series
2478551

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$1.480
($1.702)
50+
$1.060
($1.219)
100+
$0.984
($1.1316)
250+
$0.919
($1.0568)
500+
$0.855
($0.9832)
More Pricing...
Min: 1 / Mult: 1
-
1.5A
ACP Series
1767990

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$1.660
($1.909)
10+
$1.630
($1.8745)
100+
$1.600
($1.840)
500+
$1.570
($1.8055)
1000+
$1.530
($1.7595)
More Pricing...
Min: 1 / Mult: 1
-
-
-
2451898

RoHS

Each
1+
$22.530
($25.9095)
10+
$18.540
($21.321)
25+
$17.150
($19.7225)
50+
$16.490
($18.9635)
100+
$15.330
($17.6295)
More Pricing...
Min: 1 / Mult: 1
1mH
30A
CMX1616 Series
2730083

RoHS

SCHAFFNER - TE CONNECTIVITY
Each
1+
$3.030
($3.4845)
10+
$2.490
($2.8635)
25+
$2.310
($2.6565)
50+
$2.180
($2.507)
100+
$2.050
($2.3575)
Min: 1 / Mult: 1
-
2A
-
1704101

RoHS

Each
1+
$8.820
($10.143)
10+
$7.280
($8.372)
50+
$7.150
($8.2225)
100+
$7.010
($8.0615)
200+
$6.880
($7.912)
More Pricing...
Min: 1 / Mult: 1
1mH
10A
8100 Series
2292347

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$1.500
($1.725)
100+
$1.060
($1.219)
500+
$0.922
($1.0603)
1000+
$0.910
($1.0465)
2000+
$0.774
($0.8901)
More Pricing...
Min: 10 / Mult: 10
-
15A
CM3421 Series
1636275

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
$4.720
($5.428)
50+
$4.270
($4.9105)
100+
$4.110
($4.7265)
250+
$3.960
($4.554)
500+
$3.800
($4.370)
More Pricing...
Min: 1 / Mult: 1
1mH
800mA
WE-SL2 Series
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