L-com Global Connectivity
Cart is Empty
USA & Canada (800) 341-5266     International +1 (978) 682-6936
Cable Shielding - How it Works
Shielded Ethernet cable was designed for use in environments where electromagnetic interference (EMI) and radio frequency interference (RFI) are present.

Examples of such areas include manufacturing, automation and Industrial control applications where motors, generators, transformers and other noise emitting industrial machines are in use.

L-com offers several variations of shielded Ethernet cables for use in these environments including single foil shielded assemblies for areas with minimal EMI and RFI. Although Foil shielding provides 100% coverage of the conductors, it is hard to effectively terminate to connectors and offers high resistance which does not provide the best path to ground. 

L-com also manufactures double shielded Ethernet cable assemblies with foil and braid shield for use in applications where heavy EMI and RFI is present.

Braided shield generally offers 60%-85% shielding and can only offer about 95% coverage at best. The mass of the braid is higher than a foil shield and thus provides better conductivity and offers a secure connection to the connectors at the cable ends providing an excellent ground.

The shielding can deal with EMI and RFI in two ways. It can reflect the energy.

Or, it can pick up the interference and conduct it to ground, keeping the EMI and RFI away from the twisted pairs located under the shielding.

Whether the EMI/RFI is reflected off the shield or "rides" the shield to ground, some energy can still pass through the shielding, but since it is so highly attenuated it will not cause interference.

L-com offers many types of single and double shielded Ethernet cable assemblies and bulk cable including different jacket options, colors and lengths.  

If you can't find what you're looking for off-the-shelf, L-com can custom manufacture shielded Ethernet cables to your exact specifications.

Download our Cable Requirements for Harsh Environments whitepaper.

Other newsletters that may be of interest to you:
The Benefits of 24 AWG Cable
Why our Premium D-Sub Cables are Superior
An A to Z review of the 802.11 standards
USB Type-C Cable Assemblies Provide Legacy USB Connectivity
Passive Intermodulation (PIM) Explained
The Industrial Internet of Things (IIoT)
Cable Shielding - How it Works
Embedded Antennas and the IoT
Long Live RS-232!
The Differences between Solid and Stranded Cable
Coaxial Connector Termination: Which Technique is Right for You
802.11ah Breathes New Life to the 900 MHz Frequency Band
Cable Options For Every Application
900 MHz - Your NLOS Friend
802.11ax Offers Blazing Fast Wi-Fi Connectivity
The NBASE-T Alliance - Fostering Multi-Gig Speeds over Cat5e/6 Cabling
L-com and The Internet of Things (IoT)
802.3bt the Promise for Higher Power PoE
L-com's Family of Brands - A Solution for Every Application
Cat6a Products for High-Speed Networking
  Page:  1 of 15
Free Newsletter
L-com Global Connectivity           50 High Street           North Andover, MA 01845
www.L-com.com E-mail: sales@L-com.com 1-800-341-5266 www.Facebook.com/LcomGlobal

© L-com, Inc. All Rights Reserved. L-com, Inc., 50 High Street, West Mill, 3rd Floor, Suite #30, North Andover, MA 01845