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What is a Common Mode Choke?

Common mode chokes are used in order to filter common mode electromagnetic interference (EMI) currents without de-rating under high currents and without causing signal degradation. Common mode chokes are applied to supply and return pairs of conductors and are ideal for EMI filtering of signal and power lines. Common mode chokes can withstand high DC currents without filtering performance degradation, which is an issue that can happen with differential mode filters such as small chip beads.

Types of Common Mode Chokes

There are many different kinds of common mode chokes and at Future Electronics we stock many of the most common types categorized by case size / dimension, impedance, rated current, maximum DC resistance, packaging type and rated voltage. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common sizes for rated voltage are 50 V, 250 V and 500 V. We also carry common mode chokes with rated voltage as high as 250 kV. Rated current can be between 0.4 mA and 23 A, with the most frequent common mode chokes having a rated current of 500 mA, 1A or 2 A.

Common Mode Chokes from Future Electronics

Future Electronics has a full selection of common mode choke filters and coils from several manufacturers that can be used to design a USB common mode choke, 3 (three) phase common mode choke, surface mount (SMD) common mode choke, high current common mode choke, Ethernet common mode choke, CAN bus common mode choke or for any application that might require a common mode choke filter or common mode choke coil. Simply choose from the common mode choke technical attributes below and your search results will quickly be narrowed to match your specific common mode choke application needs.

If you have a preferred brand, we deal with several manufacturers such as Murata, TDK, Epcos or Panasonic Industrial Devices, among other manufacturers. You can easily refine your common mode choke product search results by clicking your preferred common mode choke brand below from our list of manufacturers.

Applications for Common Mode Chokes:

Common Mode Chokes can be used in several industrial, electronic and telecommunication applications including:

  • Automotive applications (ex: CAN bus)
  • Suppression of radiation noise in electronic devices
  • Countering common mode noise affecting signals in high-speed lines
  • USB line for PCs and peripheral equipment.
  • IEEE1394 lines for PCs
  • Panel link lines for LCD panels

Choosing the Right Common Mode Choke:

When you are looking for the right common mode chokes, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Impedance (67 Ω, 90 Ω, 1 kΩ, 10 kΩ, …), Rated Current (0.4 mA, 500 mA, 1 A, 2 A,…) and Rated Voltage (up to 250 kV) to name a few. You will be able to find the right common mode choke coils and filters that can be used to design a high current common mode choke, 3 (three) phase common mode choke, USB common mode choke, surface mount (SMD) common mode choke, CAN bus common mode choke, Ethernet common mode choke or for any circuit that might require a common mode choke filter or coil.

Common Mode Chokes in Production Ready Packaging or R&D Quantities

If the quantity of common mode chokes required is less than a full reel, we offer customers many of our common mode choke products in tube, tray or individual quantities that will avoid unneeded surplus.

In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that may arise from an unpredictable supply of products containing raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.



Featured Common Mode Choke Products


Manufacturer Part Number Description
Epcos B82790S513N201 B82790C Series 0.51 mH 140 mOhm 500 mA Data and Signal line Choke (7.1 x 6 mm)
Epcos B82793C105N265 B82793 Series 1 mH 700 mAmps SMD Multilayer Inductor
Epcos B82787C513H2 B82787C0513H002 Series 1 kOhm 0.051 uH 0.2 A 50 V SMD Common Mode Choke
Epcos B82733F2232B1 B82733F Series 10 mH 250 Vac 2.3 A 188 mOhm Power Line Double Choke
Epcos B82790C475N265 B82790 Series 4.7 uH 250 Vac 200 mA 510 mOhm Common Mode Single Line Choke
Epcos B82720S2102N40 B82723 Series 3 mH 1 A 230 mOhm Power Line Choke
Murata DLP11SN670SL2L DLP11 Series 67ohms 180mA 100M ohm 5V SMD Common Mode Choke
Murata DLW21HN181SQ2L DLW Series 0805 180 Ohm 250 mA 0.5 Ohm DCR 50 V SMT Common Mode Choke
Murata DLW31SN900SQ2L DLW Series 1206 90 Ohm 370 mA 0.3 Ohm DCR 50 V SMT Common Mode Choke
Murata DLP31SN551ML2L DLP Series 1206 550 Ohm 100 mA 3.6 Ohm DCR 16 V SMT Common Mode Choke
Murata DLW21HN900SQ2L DLW Series 0805 90 Ohm 330 mA 0.35 Ohm DCR 50 V SMT Common Mode Choke
Murata DLW5BSN102SQ2L DLW Series 2020 1000 Ohm 1500 mA 0.06 Ohm DCR 50 V SMT Common Mode Choke
Murata PLA10AN2030R5R2B PLA10A Series 16 x 18 x 17.5 mm 0.5 mA 100 MOhm DCR 300 V Common Mode Choke
Murata DLP0NSN670HL2L DLP Series 03025 67 Ohm 110 mA 2.4 Ohm DCR 5 V SMT Common Mode Choke
Murata DLW21HN121SQ2L DLW Series 0805 120 Ohm 280 mA 0.45 Ohm DCR 50 V SMT Common Mode Choke
Panasonic Industrial Devices ELC-09D101F ELC-09 series Leaded Choke Coil, 101 uH
Panasonic Industrial Devices ELC-09D102F ELC-09 series 1000 +/- 10% 2.1ohm 0.28A
Panasonic Industrial Devices ELC-09D470F ELC-09 series 47 +/- 10% 0.11ohm 1.2A
Panasonic Industrial Devices ELC-10D101E ELC-10 series 100 +/- 10% 0.11ohm 1.7A
Panasonic Industrial Devices ELC-18B101L ELC-18 series 100 +/- 10% 0.057ohm 3.2A
TDK ACM2012-900-2P-T002 ACM Series 0805 0.19 Ohm 50 V 0.4 A SMT Power Line Common Mode Filter
TDK ACM7060-701-2PL-TL01 ACM Series 7060 15 mOhm 50 V 4 A SMT Power Line Common Mode Filter
TDK ZJY51R5-2P-01 ZJY Series 5.5 x 6.86 mm 0.12 Ohm 50 V 2 A Power Line Common Mode Filter - DIP-4
TDK ACM3225-102-2P-T001 ACM Series 1210 0.5 Ohm 20 V 0.2 A SMT Power Line Common Mode Filter
TDK ACM2012-900-2P-T002 ACM Series 0805 0.19 Ohm 50 V 0.4 A SMT Power Line Common Mode Filter

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