Cobra-flex The flexible semi-rigid microwave coaxial cable assemblies Product description cobra-flex is high performance semi-rigid cables which utilise a seamless outer conductor to provide excellent RF shielding. The convoluted design gives this cable excellent phase tracking characteristics over temperature due to minimal dielectric migration. These cables are offered with many options including tin-plated outer conductor, copper clad steel center conductor for low thermal conductivity in cryogenic applications. Product features • Impedance 50 Ω • Applicable up to 40 GHz • Minimal dielectric migration • Higher flexibility without outer conductor fatiguing • Standard semi-rigid sizes • Optional extended temperature range −269 to +250 °C for cryogenic applications Recommended connectors 31086 SMA, SK, 3.5 mm, TNC, N 31000 SMA, TNC, N, 3.5 mm 31000S SMA, TNC, N, 3.5 mm Construction Cable 31000 31000S 31086 Inner conductor CuAg wire StCuAg wire CuAg wire Dielectric PTFE PTFE PTFE Outer conductor StCu tube StCu tube StCu tube Outer diameter mm 3.6 3.6 2.2 Technical data Cable Item no. Replacement Max. operating Velocity of Weight for frequency propagation GHz % g/m 31000 31000S 31086 80310897 RG_402 32 80320630 32 80310901 RG_405 40 70.3 35.7 70.3 35.7 70.3 20.8 Min. bending radii Temperature range static mm repeated mm °C 19.1 57.2 −55 to +200 19.1 57.2 8.9 26.7 170 HUBER+SUHNER Microwave assemblies
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