Typical Coaxial Cable

Coaxial cable has become a standard in communications, from analog video transmission to networking to extremely low noise audio cables. Hilman Industries can produce custom cable assemblies using any type of coaxial cable and multiple connectors, such as BNC, TNC, Phone Plugs & Jacks, RCA Plugs & Jacks, etc. We can assemble coaxial cables with either crimp or solder terminations.

Below are some helpful definitions and charts to help determine the type of coaxial cable best-suited for your application.

Please Note: This information on this page is intended to reflect our process capabilites or as general information to help aid in materials selections for wire harnesses or cable assemblies.  At this time, Hilman Industries does not manufacture wire or cable from raw materials.

Selection Considerations

Center Conductor:  Center conductors may be solid or stranded wire, or in some cases, a tube. Selection is made on the mechanical and electrical properties desired. Solid wires result in lowest cable attenuation. Stranding permits increased cable flexibility but also increases attenuation. Bare, tinned, or silver plated copper wire is usually used for center conductors. Other materials are Copperweld, Cadmium Bronze, Aluminum, Nichrome, and Karma.

Extruded Polyethylene Dielectric:  Low cost, flexibility, ease of application, high dielectric strength and low dielectric constant make it well suited for RF applications. It is the most commonly used low temperature cable dielectric.

Foam Core (Cellular Polyethylene) Dielectric:  An excellent low temperature dielectric formed by expanding polyethylene with millions of bubbles of an inert gas. Its low dielectric constant of 1.5 for Foam Core compared to to 2.26 for solid polyethylene permits the design of lower attenuation and low capacity cables.

Teflon Dielectric:  Teflon will withstand high temperature applications. It has high dielectric strength and a very low dielectric constant. Its ability to withstand exposure to gases and liquids makes it the dielectric selected where other materials would be inadequate.

Shield or Braid:  The outer conductor is usually made of a metal braid but it can be a solid tube. The braid is used where flexibility is a vital factor; the tubular construction is used where a high degree of shielding is required. Tubular construction also provides lower cable attenuation. Two adjacent braids offer better shielding action than one braid. Generally speaking braids are either copper, tinned copper, or silver plated copper.