Twinaxial Cable Definition

Twinaxial cable, frequently referred to as twinax, is a type of communications transmission cable similar to coaxial cable except that it has two insulated copper wire conductors in its center instead of one.

The two center conductors are surrounded by an insulating spacer which, in turn, is surrounded by a tubular outer conductor (usually a fine wire metal braid, foil or both). The entire assembly is then covered with an insulating and protective outer layer.

Twinax can be viewed as a combination of coaxial cable and twisted pair cable, and it combines advantages of both.

A major use of twinax has been IBM 3x and AS/400 computer systems.

Created November 13, 2005.
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