Key Specifications
Impedance (Ohm):
50
Frequency, Max (GHz):
18
Outer Diameter(mm):
6.35
Description
50 Ohm Semi-Flexible Coaxial Cable | Tin-Plated Copper Shield | PTFE Dielectric
The ROSNOL RSF-250 is a 50 Ohm semi-flexible coaxial cable designed for microwave applications up to 18 GHz. It features a steel inner conductor plated with copper and silver (∅1.67 mm / 0.0657 in), PTFE dielectric, and a tin-plated copper shield (∅6.35 mm / 0.2500 in). With a minimum bending radius of 12.70 mm (0.5000 in) and weight of 138.3 g/m, this cable supports operating temperatures from -40°C to +120°C.Electrical specifications include 95.2 pF/m capacitance, 70% signal velocity, and 4.7 ns/m signal delay. It provides insulation resistance ≥ 1×10⁸ MΩ/m and screening effectiveness ≥ 100 dB up to 18 GHz. Typical attenuation ranges from 0.20 dB/m at 0.5 GHz to 1.54 dB/m at 18 GHz, with maximum CW power handling of 1207.2 W at lower frequencies. The RSF-250 is RoHS compliant and ideal for high-power RF transmission systems.
ROSNOL’s cable solutions are precision-engineered to meet the rigorous demands of RF and microwave transmission systems. Manufactured under ISO 9001-certified processes, ROSNOL cables deliver consistent high quality and performance at competitive pricing, making them a reliable alternative to products from leading European and American brands. All ROSNOL cables are fully compliant with global environmental and safety regulations, including RoHS and REACH. Customization services for materials, shielding, and mechanical design are available to support specialized application requirements.
