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Semi rigid cables for cryogenic applications

Low loss semi rigid cable assemblies for ultra low temperature environments

Cryogenic semi‑rigid cables provide reliable, low‑loss signal transmission across all thermal stages of a cryostat, supporting both single‑channel routing and high‑density system architectures.  Their performance is driven by carefully selected materials—including CuNi, CuBe, stainless steel, and NbTi—each offering a distinct balance of thermal conductivity, electrical loss, and mechanical robustness for ultra‑low‑temperature environments.  Available as bulk or pre‑bent variants, these cables enable precise mechanical integration and defined wiring paths essential for modern cryogenic and quantum‑computing setups.


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HS RF MXP cryo harness Coaxial assembly_1

Product overview

Bulk 0.034 inch semi-rigid cables

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Bulk 0.034 inch semi-rigid cables are designed for quantum computing and cryostat applications, where material selection is crucial for achieving optimal performance at low temperatures.

Standard delivery lengths: 2m (CuNi, CuBe, SS) and 1m (NbTi)

Pre-bent 0.034 inch semi-rigid cables

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Pre-bent and cut semi-rigid cables are essential for high-density cryostat wiring, enabling precise routing and reliable installation. Our standard bending process delivers proven mechanical and electrical reliability under cryogenic conditions.


Standard delivery lengths: 300 or 450 mm

Custom bending is available upon request.

Custom 0.034 inch semi-rigid assemblies

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We provide customised cable bending based on your drawings, combining precise manual craftsmanship with automated CNC technology to deliver consistent quality - from prototypes to high‑volume production.


Our portfolio includes fully assembled solutions with a wide variety of connector options, from single‑channel SMA to high‑density MXP. Each solution is backed by comprehensive lifecycle management and specialised engineering expertise to ensure consistent high‑performance results. With a global manufacturing network, we provide resilient supply chains, local support, and dependable delivery to customers around the world.


Delivery lengths: custom as per customer requirements

Material comparison and performance characteristics



Material
Key characteristics
Thermal conductivity (4 K)
Insertion loss at 4 K and 10 GHz
Insertion loss at 300 K (25°C) and 10 GHz
Assembly method for customised cables
Cupronickel (CuNi)
Good thermal isolation with moderate electrical loss
70 × 10⁻⁶ W·cm/K
6.5 dB/m9,58 dB/mSoldering (leadfree and leaded possible)
Beryllium Copper (CuBe)
Excellent electrical performance with higher thermal conductivity
50 × 10⁻⁶ W·cm/K
10.5 dB/m
11.5 dB/m
Soldering (leadfree and leaded possible)
Stainless Steel (SS)
High mechanical strength and outstanding durability67 × 10⁻⁶ W·cm/K
9.9 dB/m

12.59 dB/m

Soldering (leadfree and leaded possible)
Niobium Titanium (NbTi)
Extremely low thermal conductivity, superconducting below 9 K
4.6 × 10⁻⁶ W·cm/K
<0.5 dB/m
29.94 dB/m
Laser welding

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Get in touch

Do you have questions?

We will gladly assist you. Send us a message or find your local contact:

languageLocations worldwide
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