Common Mode Chokes / Filters:

3,683 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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2860723

RoHS

Each
1+
HK$21.090
10+
HK$17.610
60+
HK$15.140
120+
HK$12.650
540+
HK$12.110
Min: 1 / Mult: 1
3.4mH
2A
SSHB21HS Series
2860683

RoHS

Each
1+
HK$15.540
10+
HK$12.810
60+
HK$12.140
120+
HK$10.360
540+
HK$8.880
More Pricing...
Min: 1 / Mult: 1
7.1mH
1.3A
SSHB10HS Series
2860735

RoHS

Each
1+
HK$21.610
10+
HK$17.610
120+
HK$12.650
540+
HK$11.690
1020+
HK$11.480
More Pricing...
Min: 1 / Mult: 1
9.5mH
1.8A
SSHB21HS Series
2949456

RoHS

Each
1+
HK$28.410
10+
HK$22.790
100+
HK$17.090
300+
HK$15.390
500+
HK$14.140
More Pricing...
Min: 1 / Mult: 1
40µH
3A
SN-J Series
2949352

RoHS

Each
1+
HK$20.350
10+
HK$18.670
25+
HK$15.960
50+
HK$14.260
100+
HK$12.220
More Pricing...
Min: 1 / Mult: 1
57mH
500mA
SSR21NHS Series
2949442

RoHS

Each
1+
HK$48.540
10+
HK$39.070
100+
HK$27.080
250+
HK$24.190
1000+
HK$23.610
Min: 1 / Mult: 1
120µH
5A
SN Series
2860661

RoHS

Each
1+
HK$15.460
10+
HK$9.850
60+
HK$9.510
120+
HK$9.180
540+
HK$9.000
More Pricing...
Min: 1 / Mult: 1
8.8mH
1.3A
SSHB10H Series
2949430

RoHS

Each
1+
HK$22.940
10+
HK$20.870
25+
HK$17.520
50+
HK$15.020
100+
HK$14.190
More Pricing...
Min: 1 / Mult: 1
125µH
2A
SN Series
2949463

RoHS

Each
1+
HK$52.830
10+
HK$43.430
50+
HK$39.880
100+
HK$35.810
500+
HK$35.160
Min: 1 / Mult: 1
80µH
15A
SN-J Series
2949393

RoHS

Each
1+
HK$14.510
10+
HK$13.670
90+
HK$12.830
180+
HK$11.990
540+
HK$11.150
More Pricing...
Min: 1 / Mult: 1
47.5mH
800mA
SSR21NVS-M Series
2860698

RoHS

Each
1+
HK$22.280
10+
HK$16.130
60+
HK$14.620
120+
HK$13.100
540+
HK$12.830
More Pricing...
Min: 1 / Mult: 1
2.7mH
2.5A
SSHB21H Series
3290561

RoHS

Each
1+
HK$20.050
10+
HK$16.510
60+
HK$14.210
120+
HK$13.320
540+
HK$13.140
Min: 1 / Mult: 1
5mH
4A
SC Series
3290720

RoHS

Each
1+
HK$140.920
20+
HK$123.300
60+
HK$102.170
100+
HK$95.250
Min: 1 / Mult: 1
3mH
20A
SC Series
3290775

RoHS

Each
1+
HK$61.630
10+
HK$57.020
25+
HK$49.320
50+
HK$48.610
Min: 1 / Mult: 1
8.05mH
4.5A
SCR-H Series
3225004

RoHS

Each
1+
HK$36.410
5+
HK$33.480
10+
HK$30.560
20+
HK$28.560
40+
HK$26.970
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Min: 1 / Mult: 1
2µH
15A
PLT10H Series
3290673

RoHS

Each
1+
HK$64.000
10+
HK$59.190
25+
HK$51.190
40+
HK$50.460
Min: 1 / Mult: 1
1.5mH
12A
SC-J Series
3365742

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
HK$17.530
50+
HK$14.990
100+
HK$13.100
250+
HK$12.290
500+
HK$11.660
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Min: 1 / Mult: 1
13µH
500mA
SNT Series
3290658

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Each
1+
HK$75.830
20+
HK$71.770
40+
HK$64.680
Min: 1 / Mult: 1
5.5mH
10A
SC-JH Series
3437237RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$3.090
200+
HK$2.900
500+
HK$2.860
Min: 100 / Mult: 1
11µH
250mA
ACE1V4532 Series
3365708

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$3.840
50+
HK$3.410
Min: 10 / Mult: 10
8µH
500mA
SBT Series
3290740

RoHS

Each
1+
HK$43.070
10+
HK$34.110
50+
HK$30.640
100+
HK$30.420
Min: 1 / Mult: 1
2.6mH
8A
SC Series
3290786

RoHS

Each
1+
HK$60.600
25+
HK$48.540
50+
HK$47.840
Min: 1 / Mult: 1
80µH
-
SNG Series
3290858

RoHS

Each
1+
HK$8.660
10+
HK$6.880
50+
HK$6.480
100+
HK$5.440
500+
HK$4.790
More Pricing...
Min: 1 / Mult: 1
17.99µH
2.5A
SU-9HD Series
3365711

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$6.620
50+
HK$6.370
100+
HK$6.110
500+
HK$5.900
1000+
HK$3.460
More Pricing...
Min: 10 / Mult: 10
10µH
500mA
SBT Series
3437237

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
HK$4.590
10+
HK$3.750
50+
HK$3.280
100+
HK$3.090
200+
HK$2.900
More Pricing...
Min: 1 / Mult: 1
11µH
250mA
ACE1V4532 Series
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