18 GHz 047 Stainless Steel Cryogenic RF Coaxial Cable G12E-SS

P/N: G12E-SS

  • For low-thermal-load cryogenic RF routing
  • Stainless steel conductors reduce heat conduction
  • 1.22 mm OD supports stable cold-stage wiring
  • Suited to quantum input and control lines
  • Rated to 18 GHz for cable selection
Engineering Note
The G12E-SS is a 1.22 mm OD stainless steel cryogenic RF coaxial cable designed for low-thermal-load routing where reduced heat conduction into cold stages is a key design requirement. Its construction uses a stainless steel inner conductor, PTFE dielectric, and stainless steel outer conductor, supporting dilution refrigerator interconnects, cryogenic RF routing between temperature stages, and quantum system input or control lines. The 18 GHz operating frequency is intended for preliminary cable selection; final assembly performance may depend on connector interface, cable length, routing form, thermal anchoring, and operating temperature stages.

Technical Specifications

Cable Model G12E-SS
Product Type Stainless Steel Cryogenic RF Coaxial Cable
Material Family SS
Outer Diameter 1.22 mm
Operating Frequency 18 GHz
Cable-Level Cutoff Frequency 110 GHz
Characteristic Impedance 50 ± 2.5 Ω
Shielding Effectiveness >165 dB
Dielectric Withstand Voltage 500 V DC
Velocity of Propagation 70%
Min. Bending Radius, Static 3.20 mm
Weight 0.004 kg/m
Temperature Range -268°C to 150°C
4K Thermal Conductivity 13.2 ×10⁻⁶ W·cm/K
Inner Conductor Stainless steel, 0.290 mm [0.011 in]
Dielectric PTFE, 0.950 mm [0.037 in]
Outer Conductor Stainless steel, 1.220 mm [0.048 in]
Attenuation @ 300K 5.3 dB/m @500 MHz; 7.5 dB/m @1 GHz; 17.6 dB/m @5 GHz; 25.8 dB/m @10 GHz; 36 dB/m @18 GHz
Attenuation @ 4K 3.3 dB/m @500 MHz; 4.7 dB/m @1 GHz; 10.5 dB/m @5 GHz; 14.8 dB/m @10 GHz; 20 dB/m @18 GHz

Target Applications

Low-Thermal-Load Cryogenic Routing
Suitable for RF paths where reduced heat conduction into cold stages is a primary selection requirement.
Dilution Refrigerator Interconnects
Used for dilution refrigerator interconnects where cable routing, thermal anchoring, and heat-load estimation must be evaluated together.
Quantum System Input Lines
Supports quantum system input and control lines where low thermal conduction is prioritized over lowest cable attenuation.
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