该电缆为镀银导体，镀银屏蔽透明氟塑料护套国标线。
型号 内导体结构 电线外径(mm) 标称特性阻抗
SFF50-0.7 7/0.08 1.2 50
SFF50-1 7/0.10 1.8 50
SFF50-1.5 7/0.18 2.6 50
SFF50-2 1/0.73 3.5 50
SFF50-3 1/0.93 4.5 50
SFF75-1 1/0.17 1.8 75
SFF75-1.5 7/0.10 2.55 75
SFF75-3 1/0.55 4.5 75
SFF75-5 1/0.82 6.4 75
SFB50-1 7/0.10 2.1 50
SFB50-2-1 7/0.18 2.8 50
SFB50-2-2 1/0.73 4.2 50
SFB50-3 1/0.93 5.1 50
SFB50-5 1/1.54 7.4 50
SFB50-7 7/0.82 9.2 50
SFB50-9 7/0.10 11 50
SFB75-2 7/0.10 2.8 75
SFB75-4 1/0.65 5.8 75
SFB75-7 7/0.45 9.2 75
SFB75-9 7/0.55 11 75
SFB/0.7 9.2 100