Ferrite Common Mode Chokes

A Diverse Line that Meets any EMI Demand

Laird Technologies’ compact ferrite parts provides EMI suppression on conductors such as PC board traces (tracks) and high speed input/output circuitry (including network and storage subsystems).  These are the industry's only true monolithic common mode chokes.

Common mode chokes filter common mode EMI currents without causing signal degradation and without derating under high currents.  These components are applied to pairs of conductors – supply and return.  Common mode chokes are the ideal components for EMI filtering of power and signal lines.  These components withstand high DC currents without degradation of filtering performance that can occur with differential mode filters like small chip beads.  Stable common mode chokes allow most signals to pass unaffected, yet filter the noise (EMI) from these circuits.

Modern systems are frequently an interconnection of functional blocks and connections made by cables or wiring harnesses.  These interconnections often present the opportunity for common mode current loops between devices that can lead to EMI regulatory failure.  The addition of a common mode choke before the connector filters these common mode currents while allowing the desired signals to pass unaffected.  The result is effective communication between devices, reliable product and system operation and product EMI regulatory compliance.

Laird Technologies offers a very diverse common mode choke product line that meets the demand of any applications by providing the very best solution.

Contact Laird Technologies today for your complete application solutions.

See all of our Ferrite Common Mode Chokes:

Common Mode Chokes - High Speed Signal Filtering

Provides excellent filtering capabilities for workload speeds of 25 to 480 Mb/s.

Catalog

Common Mode Chokes - Signal Filtering

Exhibits superior impedance performance well into the 100 kHz range and below.

Catalog

Common Mode Arrays - Power and Signal EMI Filtering

Provides EMI filtering for both power and data lines all in one part.

Catalog

Common Mode Chokes - Ultra High Current Power Filtering

Provides small form factor, high performance, and economical power filtering for common mode noise in applications up to 75 amps.

Catalog

Common Mode Chip Beads - Power and Signal Filtering

Designed for power and data line EMI filtering where high current, small size or high frequency performance is required.

Catalog

Common Mode Chip Beads - High Frequency

Effective in filtering power lines or high speed data lines (including network and storage subsystems).

Catalog

Common Mode Chokes - Low Frequency Power Filtering

Provides for a more lean and cost saving approach then comparable larger, heavier, wire-wound toroidal inductors.

Catalog

CAN-Bus Common Mode Chokes

Current compensated surface mount chokes for controller area networks (CAN-Bus) in automotive and industrial controls applications.

Catalog  |  Datasheets

Datasheets

Click on the datasheets below to find out more about this product line.

Common Mode Chokes 
EMI Common Mode Chokes - Series 05 Brochure Download
EMI Low Profile Common Mode Chokes Brochure Download 
EMI Miniature Surface Mount Common Mode Chokes Brochure Download  

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Downloads

Click on the downloads below to learn more about the product lines.

ISO 9001:2000 Certification
ISO 14001:2004 Certification
OHSAS 18001:2007 Certification
Lead Free / RoHS Compliance Application Notes Download

Ferrite

EMI Board Level EMI Filtering Solutions Brochure Download 
Board Level EMI Filtering Solutions Catalog 
EMI Part Family Application Chart Brochure Download 
EMI Part Number Nomenclature Explanation Brochure Download 

Chokes

EMI Common Mode Choke Master List Brochure Download
EMI Low Profile Common Mode Chokes Brochure Download 
EMI Primary EMIFiltration for Telecomms-VMW-VX1 Racks Application Notes Download 
Ferrite Common Mode Chokes Part Number Nomenclature 

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