COMMUNICATION WIRE

To provide a communication wire which is hardly disengaged from a fixture and has transmission characteristics designed for high speed communication.SOLUTION: A communication wire 1A has a twisted pair cable 2 formed by twisting insulated wires 11A and 11B, and a sheath 12A which covers the outer periphery of the twisted pair cable 2 and is formed of a polyolefin-based resin. The insulated wires 11A and 11B include core wires 111 formed by twisting element wires 1111, and insulation coatings 112 which are formed of a polyolefin-based resin. The communication wire 1A has a characteristic impedance within a range of 100 Ω±10 Ω, and the outer diameter of the sheath 12A is less than 2.4 mm.SELECTED DRAWING: Figure 1 【課題】固定具から外れにくく高速通信に対応した伝送特性を有する通信用電線を提供する。【解決手段】通信用電線１Ａは、絶縁電線１１Ａ、１１Ｂを対撚りした対撚り線２と、対撚り線２外周を覆うポリオレフィン系樹脂で形成されたシース１２Ａと、を有する。絶縁電線１１Ａ、１１Ｂは、素線１１１１を撚った撚線であるコア線１１１と、ポリオレフィン系樹脂で形成された絶縁被覆１１２と、を有する。通信用電線１Ａは、特性インピーダンスが１００Ω±１０Ωの範囲内であり、シース１２Ａの外径が２．４ｍｍ未満である。【選択図】図１