标称阻抗 Ω 构成 外径 SYV-75-2-1 75 7×0.11 0.32 2 4 SYV-75-3 75 7×0.17 0.51 2.95±0.10 3.85S 5.0±0.25 SYV-75-5 75 单芯 0.75 4.60±0.20 5.50S 7.1±0.30 SYV-75-7 75 7×0.4 1.2 7.25±0.25 8.50S 10.2±0.30 SFF-50-1 50 7×0.10 0.3 0.87±0.10 1.45S 1.8±0.15 SFF-50-1.5-1 50 7×0.18 0.54 1.5±0.10 2.10S 2.55±0.15 SFF-50-1.5-2 50 7×0.18 0.54 1.5 2.75D 3.2 SFF-50-2-1 50 单芯 0.73 2.2 2.80S 3.3±0.20 SFF-50-2-2 50 单芯 0.73 2.2 3.45D