0.120'' Low Loss Semi-Rigid Cable Non-Magnetic Coax with Low Density PTFE Dielectric

SR‑120C‑LL semi‑rigid coaxial cable is a 0.120", 50‑ohm, low‑loss non‑magnetic microwave cable designed for long RF runs, higher power levels, and ultra‑stable phase performance. As a UT-120C-LL alternative, its larger diameter and optimized silver plated copper conductor and low density PTFE dielectric significantly reduce attenuation compared to smaller semi‑rigid cables, making it ideal for demanding links where every dB of loss matters. Non‑magnetic materials throughout the cable structure minimize interaction with strong magnetic fields, enabling clean performance in MRI, NMR, and precision scientific equipment. The semi‑rigid copper‑based outer conductor allows accurate pre‑forming, excellent shielding, and mechanically robust installations in critical RF systems.

• Larger 0.120" 50‑ohm semi‑rigid construction for lower attenuation and higher power handling than 0.086" transmission lines.
• Non‑magnetic silver plated copper conductor and solid copper tube outer conductor structure to maintain extremely low magnetic signature.
• Low density PTFE dielectric formulation optimized for long cable runs and phase‑critical paths.
• Excellent shielding effectiveness for reduced crosstalk and improved system‑level EMC.
• 50 +/- 1.0 Ohm tight impedance control for superior return loss and consistent high‑frequency performance.
• Suitable for precision pre‑forming with stable routing in cabinets, gantries, and instrument racks.
• -55~+250 ℃ wide operating temperature range and solid‑metal build for harsh industrial and scientific environments.
• Compatible with commonly used 0.120" semi‑rigid connectors and hardware ecosystems.

• MRI / NMR RF Chains – Use SR‑120C‑LL in body coil, gradient, and receive chain interconnects where non‑magnetic, low‑loss cabling preserves SNR and avoids image artefacts.
• High‑Power Transmit Paths – Ideal for power amplifier outputs and feeder lines in systems that require higher continuous‑wave or pulsed RF levels with minimal heating.
• Low‑Loss Instrumentation Links – Deploy between racks, consoles, and remote front‑ends when you need long runs with tight amplitude and phase budgets.
• Aerospace and Defense Radar – Suitable for radar front‑end interconnects, beam‑forming networks, and low‑loss feed lines in air, naval, or ground platforms.
• Scientific and Particle Physics Labs – Use in accelerator RF, timing reference distribution, and magnet‑area electronics where magnetic cleanliness and low loss are essential.
• Metrology and Calibration Systems – Excellent for reference lines in calibration benches, power standards, and phase‑stable measurement setups.
• Custom Pre‑Formed Harnesses – Perfect for multi‑cable assemblies with defined routing, fixed phase matching, and repeatable production‑line installation.

A: SR‑120C‑LL has a larger outer diameter and a low‑loss design, so it exhibits lower attenuation and higher power handling than 0.086" non‑magnetic cables. It is the better choice for longer runs or power‑intensive links where system margins are tight.

A: Yes. SR‑120C‑LL is built with non‑magnetic metals and finishes, making it suitable for environments with strong magnetic fields such as MRI and NMR systems where standard ferromagnetic cables are unacceptable.

A: While exact numbers depend on frequency, SR‑120C‑LL is engineered to deliver noticeably lower dB/m loss than smaller‑diameter semi‑rigid types. For critical paths, this can translate to reduced amplifier requirements or improved SNR at the receive end.

A: Yes. It can be formed using proper bending tools and formers designed for 0.120" semi‑rigid cable. Follow the recommended minimum bend radius to avoid micro‑cracks or impedance changes, and use pre‑formed assemblies when repeatability is important.

A: SR‑120C‑LL’s low‑loss dielectric and robust mechanical design help maintain phase consistency over time and temperature. For very phase‑sensitive systems, you can specify matched‑length or phase‑matched assemblies during ordering.

A: Include the cable type (SR‑120C‑LL), required length, connector series and genders, operating frequency range, maximum power level, environmental conditions (temperature, vibration, vacuum if any), and whether you need straight or pre‑formed assemblies with drawings.

A: Yes. It is common to use SR‑120C‑LL for trunk lines or high‑power/long‑distance sections, then transition to smaller sizes near sensitive modules or tight mechanical areas. Make sure connector transitions and impedance are properly managed.