0.031″ Semi-Rigid Low-Loss RF Coaxial Cable, 18 GHz Rated

Low-Loss Semi-Rigid Coaxial Cable for 18 GHz RF and Microwave Applications

The CRG031 low-loss semi-rigid coaxial cable is engineered for stable high-frequency performance up to 18 GHz . Featuring a precision silver-plated copper-clad steel inner conductor, PTFE dielectric, and a seamless annealed copper outer conductor, this cable delivers excellent attenuation performance, high shielding effectiveness, and strong dimensional stability. With outstanding thermal resistance and mechanical rigidity, the CRG031 is ideal for microwave modules, aerospace assemblies, communication systems, and applications requiring formable coaxial paths with consistent electrical characteristics.

Stable Electrical Performance for Precision RF Transmission

The CRG031 semi-rigid cable maintains a 50 Ω ±1.1 Ω characteristic impedance and supports low-loss signal transmission up to its 18 GHz operating frequency . A 76% velocity of propagation and a cut-off frequency of 154 GHz ensure excellent high-frequency behavior. Attenuation performance includes 8.181 dB/m at 18 GHz, supporting short-run interconnects in precision RF systems. With 165 dB shielding effectiveness, the cable provides exceptional isolation against electromagnetic interference, enabling clean, reliable signal integrity in sensitive microwave environments.

Rigid Copper Construction with High Temperature Endurance

Constructed with a 0.80 mm seamless annealed copper tube, the CRG031 offers excellent mechanical rigidity, dimensional stability, and the ability to be bent and formed into fixed routing paths without compromising electrical performance . The cable withstands temperatures from −55 °C to +125 °C, ensuring durability in harsh operating conditions. Weighing just 3 g/m with a minimum bend radius of 4.30 mm, the CRG031 allows compact routing inside microwave assemblies, airborne systems, and miniaturized RF enclosures.

Applications Requiring Stable, Low-Loss Semi-Rigid Coax

The CRG031 semi-rigid coaxial cable is well-suited for aerospace modules, radar front-ends, microwave subassemblies, bench-top instrumentation, and RF systems requiring low loss, high shielding, and stable mechanical formability. Part of Mechanc’s Low-Loss Semi-Rigid Coaxial Cable Series, it delivers reliable performance for both prototyping and high-volume production applications.

Manufactured by Mechanc Shanghai Information Technology, the CRG031 semi-rigid coaxial cable provides consistent electrical performance, excellent shielding, and robust thermal endurance for high-frequency RF and microwave applications up to 18 GHz. REACH & RoHS compliant.