Product Description
This SR-047 0.047 inch (1.19mm) semi-rigid coaxial cable serves as a UT-047 compatible alternative, featuring seamless copper tube construction that provides 100% RF shielding with effectiveness exceeding 100 dB. The center conductor utilizes silver-plated copper-clad steel (SCCS) at 0.0113 inch (0.287mm) diameter, delivering excellent conductivity while maintaining mechanical strength for permanent forming. PTFE dielectric supports 70% velocity of propagation with capacitance of 29 pF/ft (95.2 pF/m). Operating frequency extends to 109 GHz, with insertion loss of 10.6 dB/m at 40 GHz and 9.39 dB/m at 65 GHz. MIL-C-17/151 compliant with 3000V RMS voltage rating and RoHS certified, this UT-047 compatible alternative semi-rigid cable is suitable for test fixture internal wiring, probe card interconnects, and microwave module integration where phase stability and repeatable performance are required.
Key Features
- UT-047 compatible alternative – form-fit-function equivalent with identical 0.047" (1.19mm) outer diameter and 50 Ohm impedance, compatible with all standard UT-047 connector tooling
- Seamless copper tube shield – Provides 100% RF shielding with >100 dB effectiveness, eliminating signal leakage in multi-port test fixtures
- 110 GHz frequency capability – Supports millimeter wave applications through W-band, with usable performance extending beyond 110 GHz
- 50 Ohm impedance with PTFE dielectric – 70% velocity of propagation with 29 pF/ft (95.1 pF/m) capacitance for consistent impedance
- SCCS center conductor – 0.0113 inch (0.287mm) silver-plated copper-clad steel for low loss and reliable soldering
- 0.050 inch minimum bend radius – Formable for custom routing in test fixtures and compact module layouts
- MIL-C-17/151 compliant – Manufactured to mil-spec for defense and aerospace applications
- RoHS certified – Meets environmental compliance requirements for global markets
- 3000V RMS voltage rating – Suitable for high voltage device characterization and breakdown testing
- 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 for blind-mate applications
- 10 meter minimum order – Low MOQ for test fixture development and research projects
Specifications
Construction
| Item |
Material |
Diameter (in) |
Diameter (mm) |
| Centre Conductor |
Silver Plated Copper Clad Steel |
0.0113 |
0.2870 |
| Dielectric |
Solid PTFE |
0.037 |
0.940 |
| Outer Conductor |
Copper Tube |
0.047 +/- 0.001 |
1.194 +/- 0.025 |
Electrical Data
| Capacitance (pF/m) |
95.2 |
| Impedance (Ohms) |
50 +/- 1.5 |
| Velocity of Propagation (%) |
70.0 |
| Max. Frequency (GHz) |
109 |
| Max. Voltage @60Hz (V RMS) |
3000 |
Mechanical Data
| Min. Bend Radius (mm) |
1.270 |
| Weight (kg/100m) |
0.33 |
Environmental Data
| Temperature Range (℃) |
-55~+150 |
| RoHS |
Compliant |
Attenuation and Power
| Frequency (GHz) |
Attenuation (dB/m) |
Power (Watts cW@20℃) |
| 0.50 |
0.8 |
80.5 |
| 1.00 |
1.1 |
56.5 |
| 5.00 |
2.6 |
24.7 |
| 10.00 |
3.7 |
17.2 |
| 18.00 |
5.1 |
12.6 |
| 26.5 |
6.4 |
10.2 |
| 40.00 |
8.0 |
8.1 |
| 50.00 |
9.1 |
7.2 |
| 65.00 |
10.6 |
6.2 |
| 90.00 |
12.8 |
5.1 |
Applications
- Semiconductor test industry – Internal wiring within high-frequency test fixtures and probe cards for wafer-level device characterization up to 110 GHz
- Microwave module integration – Pre-formed semi rigid interconnects for internal signal routing in amplifier modules, frequency converters, and transceiver assemblies
- VNA test fixtures – Signal paths within custom test enclosures connecting device under test to VNA interface ports
- Aerospace & defense electronics – Internal wiring in radar modules, EW systems, and satellite payloads requiring MIL-C-17/151 compliance
- Quantum computing research – Cryogenic test fixture interconnects for qubit characterization at millikelvin temperatures
- 5G mmWave infrastructure – Production test fixtures for 28GHz and 39GHz power amplifier and front-end module testing
- Automotive radar – Test fixtures for 77GHz radar sensor characterization and production validation
- Medical device manufacturing – Internal wiring in test fixtures for MRI-compatible electronics and implantable device qualification
- Metrology and calibration – Reference standards and calibration fixtures requiring phase-stable, low-loss construction
- High reliability component testing – Burn-in and environmental stress screening fixtures for microwave components
FAQ
Q: What is the maximum frequency for SR-047 0.047" semi-rigid cable?
A: The semi-rigid coaxial cable is specified for operation up to 110 GHz with usable performance across the entire millimeter wave spectrum. At 67 GHz, insertion loss is approximately 10.7 dB/m, suitable for short internal fixture paths under 100mm.
Q: What MIL specification does SR-047 meet?
A: This 0.047" semi rigid coax is manufactured to MIL-C-17/151 requirements, ensuring consistent quality and material traceability for defense and aerospace applications.
Q: Is this RF cable RoHS compliant?
A: Yes, SR-047 semi rigid RF cable is fully RoHS certified and meets environmental compliance requirements for global markets.
Q: What is the copper tube shield construction?
A: The seamless copper tube outer conductor provides 100% RF shielding with effectiveness exceeding 100 dB, eliminating signal leakage in multi-port test fixtures and sensitive applications.
Q: What is the minimum bend radius for routing within test fixtures?
A: Minimum static bend radius is 0.050 inches (1.27 mm). For consistent results in test fixture integration, use radiused forming tools matched to the desired bend radius.
Q: What connector options are available for this 0.047" semi rigid cable?
A: Standard options include bare ends for direct soldering, SMA connectors for applications below 26 GHz, 2.92mm connectors for 40 GHz test systems, and SMP connectors for blind-mate applications.
Q: What is the minimum order quantity for test fixture development?
A: Our MOQ for SR-047 semi rigid coax is 10 meters. This low MOQ supports test fixture prototyping and research projects.