Coaxial Cable Frequently Asked Questions

Coaxial Cable

PTFE Coaxial Cable

What is PTFE?

PTFE is the abbreviation for polytetrafluoroethylene, which is a fluoropolymer used in a variety of applications and industries. Most people recognize PTFE as the non-stick coating used in cookware. In the wire and cable industry, PTFE is used as insulation and jacketing material for several types of cable, including coaxial cable.


What are the Benefits of PTFE in Coaxial Cable?

The properties of PTFE make it a great choice for coax, because it is very non-reactive and has a low dielectric constant rating, especially at high frequencies. This means that it won't hold as much electrostatic charge as other dielectric materials with a higher dielectric constant rating.


What Types of Coaxial Cable Use PTFE?

Several types of coax use PTFE as the dielectric or the jacket, or even both.

  • RG142 Cable: RG142 coaxial cable is constructed with a silver-coated copper clad steel conductor, PTFE dielectric, 2 silver-coated copper shields and a fiberglass jacket. Rated to 1,900 vms, with an operating temperature range of -55°C and 250°C, it is typically used for interconnects or jumpers. Click here to view RG142 Cable Specifications.
  • RG178 Cable: RG178 BU coax also has a silver-coated copper clad steel conductor and PTFE dielectric. It has a single silver-coated copper shield and a fluorinated ethylene propylene jacket. It has a 1,000 vms rating and an operating temperature range of -55°C and 200°C. Click here to view RG178 Cable Specifications.
  • RG179 Cable: RG179 coax also has a silver-coated copper clad steel conductor, PTFE dielectric, and a single silver-coated copper shield, but has a KEL-F jacket. A 75 ohm cable, RG179 is suited for use with cable TV and video. Click here to view RG179 Cable Specifications.
  • RG180 Cable: RG180 Coax is constructed of the same materials as RG179, but is rated at 95 ohms and has 15 pF/ft capacitance. As such, it is used more for data transmission over cable TV and video like RG179 Cable. Click here to view RG180 Cable Specifications.
  • RG188 Cable: RG188 AU Coax has both a PTFE jacket and insulation, with a silver-coated copper clad steel conductor and a single silver-coated copper shield. It is rated to 1,200 vms and can operate between -55°C and 250°C. Click here to view RG188 AU Cable Specifications.
  • RG316 Cable: RG316 Coax is constructed with a silver-coated copper clad steel conductor and a single silver-coated copper shield. It has solid PTFE dielectric and a fluorinated ethylene propylene jacket. Unlike RG178, RG316 Coax is rated to 1,200 vms and should only operate between -55°C and 80°C. Click here to view RG316 Cable Specifications.
  • RG400 Cable: RG400 Coax has a silver-coated copper conductor and dual shield with solid PTFE dielectric and a fluorinated ethylene propylene jacket. It is rated to 1,900 vms and can operate between -55° C and 200°C. Click here to view RG400 Cable Specifications.

What Are the Mil-Spec Equivalents for These Cables?

Help

Create an Account

Save time submitting RFQs and custom cable designs. Register here.

 

How Can We Help You?

Get Pricing: Submit a Request for Quote
Email Us: Customerservice@awcwire.com
Call Us: 800-472-4655

 

Help

Create an Account

Save time submitting RFQs and custom cable designs.

FAQs

Get answers to your most common questions.