West Penn Wire Blog

Different Types of Category Cable Shielding

Posted by Samantha Bante on Mar 14, 2018 10:00:00 AM

As technology advances each year, shielded category cables are becoming more commonly used for a variety of small to large scale projects. Although these are not always required, they are highly spec'd and suggested.

The "shield" on these cables act as a barrier to protect the signal integrity from electrical interference or, EMI and provides very little loss. There are a variety of acronyms that are commonly used. Before we get into the types of cables, its important to know what the letters mean. These acronyms were established by the ISO/IEC 11801 standard and adopted by TIA/EIA.

Category 7.jpgFigure 1: Category 7 Cable with S/FTP

Standard shielding abbreviations:

  • TP = Twisted Pair
  • U =Unshielded
  • F = Foil Shield
  • S= Braided Shield

The chart below indicates the acronyms commonly used for category cable shielding:


Acronym Cable Details Cable Shield/Pair Shield
UTP or U/UTP Unshielded twisted pairs No Cable Shield/No Pair Shield
F/UTP Overall foil shield Foil Cable Shield/No Pair Shield
S/FTP Each pair shielded w/ overall shielded braid Tin Copper Braid Cable Shield/ Foil Pair Shield
U/FTP* Each pair individually shielded No Cable Shield/Foil Pair Shield
F/FTP* Overall foil shield w/ each pair individually shielded Foil Cable Shield/Foil Pair Shield
SF/UTP* Overall foil shield w/ overall shielded Braid Foil & Tin Copper Braid Cable Shield/Foil Pair Shield

* Disclaimer: West Penn Wire does not carry U/FTP, F/FTP or SF/UTP cables 

Want to learn more about our category cables? Check out our product videos or view more on our resource center or website! 

View West Penn Wire Product Videos

Topics: Low Voltage Cables, Category 7 Cable, Category Cable, Category 6A Cable, shielded cable, bulk cable

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