0.034" Semi-Rigid Coax UT-034 Alternative 50 Ohm RF Test Cable with PTFE dielectric

The SR-034 semi-rigid coax serves as a high-performance UT-034 alternative, maintaining identical 0.86mm outer diameter and 50 Ohm impedance while offering the same mechanical fit for existing connector tooling. This seamless copper tube construction delivers 100% RF shielding with effectiveness exceeding 120 dB, eliminating signal leakage that compromises sensitive receiver measurements. The silver-plated copper-clad steel center conductor (0.203mm diameter) and PTFE dielectric maintain 70% velocity of propagation with 95.2 pF/m capacitance. With voltage rating of 2100V RMS and cutoff frequency extending to 155 GHz, this RF test cable meets the demands of satellite communications, defense radar, and millimeter wave test applications where signal integrity determines system success.

• UT-034 alternative – form-fit-function equivalent to Micro-Coax UT-034 with identical 0.034" (0.86mm) outer diameter, compatible with all standard UT-034 connector tooling
• 90 GHz frequency capability – specified through 90 GHz with usable performance to 155 GHz cutoff, supporting Ka-band through W-band applications
• Seamless copper tube outer conductor – provides 100% RF shielding with zero signal leakage, critical for sensitive receiver front-ends and EMC-critical assemblies
• 2100V RMS voltage rating – withstands 2100V at 60Hz with corona extinction voltage of 750V, suitable for high voltage feedthrough applications
• Silver-plated copper-clad steel center conductor – 0.203mm diameter with 3μm silver plating for low skin effect losses at millimeter wave frequencies
• MIL-DTL-17 compliant construction – meets mil-spec M17/154 for defense traceability
• 0.05 inch (1.27mm) bend radius – formable for tight routing in compact modules while maintaining phase stability
• Phase stable design – copper tube construction ensures consistent electrical length under mechanical stress and temperature variation
• Custom lengths – cut to exact specifications for prototype through production quantities
• Connector options – bare ends, SMA through 26GHz, 2.92mm through 40GHz, or 1.85mm for full 90GHz performance
• 10 meter minimum order – low MOQ for R&D teams and small production runs

• Satellite payload integration – A European space contractor selected SR-034 as their UT-034 alternative for Ku-band receiver interconnects after qualifying the semi-rigid coax cable through thermal vacuum cycling. The 0.86mm diameter allowed multiple channels to route through waveguide transitions while maintaining phase stability within 2° at 15GHz across -55°C to +85°C.
• Millimeter wave test fixtures – Engineers at a 5G mmWave component house use pre-formed SR-034 rf test cables in their production test fixtures for 28GHz power amplifiers. The 1.27mm bend radius enables precise routing around heat sinks and probe positions, while the 100% copper tube shielding eliminates crosstalk between adjacent test channels.
• Defense radar TR modules – A defense prime developing active electronically scanned arrays specifies SR-034 for internal connections between T/R modules and beamforming networks. The 2100V rating provides margin for transmit chain voltages, and the silver-plated conductor ensures consistent insertion loss across thousands of production units.
• Cryogenic quantum computing setups – Research institutions building dilution refrigerator systems for superconducting qubits use SR-034 for control lines where thermal conductivity must be minimized. The stainless steel center conductor option reduces heat leak while maintaining RF performance through 40GHz.
• Medical MRI receive coils – A medical device manufacturer integrates SR-034 into 7T MRI receive coil arrays, where the non-magnetic copper construction eliminates image artifacts caused by ferrous materials. The 0.034" diameter fits within the tight spacing of overlapping coil elements.
• Automotive radar validation – Engineers testing 77GHz automotive radar sensors rely on SR-034 for temporary test harnesses. The RF test cable's phase stability under flex ensures that bending during vehicle integration doesn't shift calibration, and the low loss preserves signal levels through 5 meter test leads.
• Space flight harness assemblies – With M17/154 qualification, SR-034 semi-rigid coax appears in government procurement lists for satellite programs requiring full material traceability and precious metal documentation.
• High reliability module interconnects – Manufacturers of airborne electronics for unmanned systems choose SR-034 because the seamless copper tube withstands vibration better than braided alternatives, and the formable nature allows custom bends that eliminate connector stress in high-G environments.