0.086'' Non-Magnetic Semi-Rigid Cable 50Ω Low Loss UT-085C-LL Alternative Coax Cable

The SR-085C-LL is a precision 0.086 inch (2.2mm) low loss semi-rigid coaxial cable engineered as a high performance UT-085C-LL alternative for demanding microwave and millimeter wave applications. Featuring seamless copper tube construction with low density PTFE dielectric, this cable delivers 77% velocity of propagation and capacitance of 29.0 pF/ft (95.2 pF/m) with impedance tolerance of 50Ω±1.5 Ohm. The silver plated copper center conductor (0.574mm) ensures excellent conductivity and solderability, while the copper tube outer conductor provides 100% RF shielding. With higher order mode frequency extending to 65 GHz and voltage withstanding of 4800V RMS, this semi-rigid cable supports applications through 65 GHz. Operating temperature ranges from -55°C to +250°C with full RoHS compliance. The non-magnetic construction makes it suitable for cryogenic and MRI adjacent applications where magnetic interference cannot be tolerated. Available in custom lengths with various connector options, backed by a 10 meter minimum order quantity.

• UT-085C-LL alternative – Form-fit-function equivalent with identical 0.0865 inch (2.197mm) outer diameter and 50 Ohm ±1.5 impedance, compatible with all standard UT-085 connectors
• Low loss design – Low density PTFE dielectric provides 77% velocity of propagation with attenuation of only 3.91 dB/m at 40 GHz and 5.10 dB/m at 65 GHz
• Non-magnetic construction – Silver plated copper center conductor with no ferrous content, verified for cryogenic and MRI applications where magnetic materials cannot be tolerated
• 4800V RMS voltage withstanding – Suitable for high power RF applications including satellite transmitters and medical imaging systems
• 65 GHz frequency capability – Usable performance through 65 GHz with higher order mode frequency of 65 GHz ensuring clean propagation
• Seamless copper tube shielding – Provides 100% RF coverage with zero signal leakage and shielding effectiveness exceeding 120 dB
• -55°C to +250°C operating range – Wide temperature tolerance for aerospace, defense, and industrial applications
• 6.35 mm minimum bend radius – Formable for custom routing in test fixtures, cryostats, and compact assemblies
• 2.09 kg/100m weight – Lightweight construction for weight sensitive applications
• Custom lengths – Cut to exact specifications for prototype through production quantities
• Connector options – Bare ends for PCB solder, SMA through 26 GHz, 2.92mm through 40 GHz, SMP, and N Type
• 10 meter minimum order – Low MOQ for research projects and production runs

• Quantum computing cryostats – Low loss non-magnetic interconnects for qubit control lines in dilution refrigerator systems at millikelvin temperatures
• Satellite communications – Feeder links and payload interconnects for Ku/Ka band transponders requiring low loss and wide temperature tolerance
• High power test fixtures – Internal wiring for semiconductor characterization systems requiring 4800V withstand for GaN and SiC device testing
• Medical imaging – MRI receive coil arrays and RF transmit paths where non-magnetic materials eliminate image artifacts
• Aerospace radar – TR module interconnects and beamforming networks in active electronically scanned arrays
• Defense electronics – Electronic warfare systems and secure communication links requiring MIL grade reliability
• Cryogenic research – Low temperature measurement setups for material characterization and quantum sensing
• Telecommunications infrastructure – Base station components and backhaul equipment for 5G networks
• Particle accelerators – Beamline monitoring and RF pickup applications where magnetic materials disturb trajectories
• Space instrumentation – Magnetometer payloads and scientific instruments requiring zero magnetic interference

Q: Is SR-085C-LL a direct replacement for UT-085C-LL?

A: Yes. SR-085C-LL is engineered as a form-fit-function UT-085C-LL alternative with identical 0.0865 inch outer diameter, 50 Ohm ±1.5 impedance, and 0.574mm silver plated copper center conductor. All standard connectors designed for UT-085 series fit without modification.

Q: What is the maximum frequency for this semi-rigid cable?

A: This semi-rigid cable is specified for operation up to 65 GHz with usable performance across the millimeter wave spectrum. Higher order mode frequency is 65 GHz, ensuring clean propagation through the specified range.

Q: What is the voltage rating?

A: Maximum voltage withstanding is 4800 Vrms at 60 Hz. This makes it suitable for high power RF applications in satellite and medical systems.

Q: Is this cable non-magnetic?

A: Yes. The center conductor is silver plated copper with no ferrous content, verified non magnetic for cryogenic and MRI applications where magnetic materials cannot be tolerated.

Q: What is the velocity of propagation?

A: 77% from low density PTFE dielectric, which also contributes to the low loss characteristics of this cable.

Q: What is the minimum bend radius?

A: 0.250 inches (6.35 mm) for static installation, allowing formable routing in test fixtures and compact assemblies.

Q: What is the operating temperature range?

A: -55°C to +250°C, suitable for aerospace, defense, and industrial applications requiring wide thermal tolerance.

Q: What connector options are available?

A: Standard options include bare ends for direct PCB solder, SMA connectors for applications below 26 GHz, 2.92mm connectors for 40 GHz systems, SMP for blind mate applications, and N Type. Custom configurations available upon request.

Q: What is the minimum order quantity?

A: Our MOQ is 10 meters. This low MOQ supports research projects, prototyping, and small production runs.

Q: What documentation is available?

A: We provide material certification like RoHS and MSDS, lot traceability records, insertion loss and VSWR test data at specified frequencies, and non-magnetic verification upon request.