.png){kind=small}
Unfiltered NbTi and Ag lines
.png){kind=small}
Up to 100 cm length
.png){kind=small}
Super flexible
Out of the box installation
Up to 18 GHz frequency range
.png){kind=small}
Customizable connectors
Sturdy and durable
General Specifications
Specification
Flex length
200 to 1100 mm
Connector Housing
Goldplated O2-Free Copper
Flex Materials
Polyimide & Silver (Ag) or NbTi
Amount Of Channels
8
Transmission Type
Stripline
Flex Thickness
0.3 mm
Connector Type
SMA female / SMP
Required length for longitudinal rotation
10 cm / 180° rotation
Minimum Bending Radius
5 mm
Vacuum Feedthrough Connection
KF25/40, ISO 100 side and top loader ports
Vacuum Feedthrough Leak Rate
< 10-9 mbar L/s
Connector Material
Goldplated Brass/BeCu/PEEK/PTFE
Cable Overview
Want To Know More
Used For
✤ General I/O to cold stages
✤ High power lines
✤ Building block for general I/O
Optimised For
✤ Simpilicity
✤ Wide band transmission
✤ Low power loss
Key Features
✤ 8 Channels per flex *High-density microwave channels
✤ Resilient against thermal cycling
✤ Optional filtering & signal conditioning
✤ Integrated vacuum feedthrough
✤ Low thermal load
Straightforward Cryogenic I/O
A simple, dependable path for routing signals from room temperature to the cold stage without unnecessary complexity.
.webp)
Material Options for Your Setup
Choose Silver (Ag) for versatile use cases or NbTi superconducting lines when ultra-low loss performance is required.
About the Signal Lines
Simple, Reliable Signal Lines for Cryogenic I/O
Signal lines are the most straightforward way to bring input and output signals down to your cold stage. Whether you choose the Silver (Ag) platform or a superconducting NbTi option, these solutions suit a wide range of cryogenic setups. Built for clean routing and dependable performance, Cri/oFlex® signal lines provide a practical foundation for stable I/O connections in many lab and system configurations.
Measurements
All measurements shown on this page are based on a flex cable containing eight channels without components. The mean is shown with a thick line and the spread of all channels is shown with the transparent area.
Ag
Silver Platform
NbTi
Plug
Superconducting Option
Easy Integration
What We Do
Cri/oFlex® Signal Solutions for Cold-Stage Connectivity
We provide plain Cri/oFlex® signal line solutions that help you route I/O to the cold stage with confidence. With flexible material choices and dependable construction, these signal lines are ideal for many cryogenic applications where simplicity, stability, and integration ease matter most.
Transmission Properties
The transmission of Cri/oFlex® can be as low as 1.5 dB/m at 6 GHz for NbTi. For our Silver (Ag) platform a typical 6 dB/m at 6 GHz at low temperatures is normal. In the field these losses are denoted as insertion losses.
On the graph the Silver transmission is plotted for different temperatures.
Below the transmission are the S11 reflections graphs shown. These are known in the field as reflection losses, as they appear as reflections for the system. The Cri/oFlex® is overall well below 15 dB for each reflection.
.png)
Cross Talk
A common concern for high-density microwave signaling is crosstalk. Our multichannel Cri/oFlex® 3 allows for high line density with good isolation. On the right, the near-end crosstalk (NEXT) and equal level far-end crosstalk (EL-FEXT) between channels in a room-temperature 20 cm long Ag Cri/oFlex® 3 with a 1 mm channel pitch are plotted. The solid line is the average of all channel combinations and the semitransparent the area shows the best (furthest) and worst case (nearest channels) of an 8-channel flex. Even in the worst case, crosstalk is below -60 dB for signals up to 10 GHz. NbTi Cri/oFlex® has comparable performance.
System integration
Integration
There is a wide variety of cooling solutions for quantum computing and low temperature experiments, ranging from lab size dilution refrigerators to small 4K table-top systems. As an i/o provider, it is our task to connect quantum devices and cold experiments to the control electronics regardless of the cooling implementation. To that end we have developed standardized solutions that fit (or can be made to fit) all fridges.
Whether you are purchasing a new system or want to refurbish your current system, Cri/oFlex® provides a solution.
Wiring Ports
Have a spare port in your fridge and want to add extra lines or replace an existing wiring port with a higher density cabling solution?We supply vacuum feedthroughs, Thermal clamps, Brackets and Cri/oFlex® laminates for all standard ports you will find in dilution refridgerators.
Out of the box solution
Fits for all standard ports
Upgrade existing systems
Loaders
Delft Circuits can supply fully pre-assembled loaders with Cri/oFlex cabling inside.We supply top- and sideloaders for all common brands such as Bluefors, Oxford and Leiden Cryogenics.
The advantages of pre-assambled loaders:
Plug and play cabling solution
More channels in a loader
Engineered for your application
Turn-Key
Have a spare port in your fridge and want to add extra lines or replace an existing wiring port with a higher density cabling solution?We supply vacuum feedthroughs, Thermal clamps, Brackets and Cri/oFlex® laminates for all standard ports you will find in dilution refridgerators.
Full-service provider
Full fletched solutions
Innovative design
Dive Deeper Into Cri/oFlex Technology
Nano Vacuum delivers world-leading vacuum, micro and nano-fabrication, and quantum-cryogenic solutions for researchers and innovators across Australia and New Zealand.
Copyright © NanoVacuum 2025. All rights reserved.
Phone
1800 560 820
Location
6 / 7 Salisbury Road, Castle Hill, NSW. 2154
Quick Links
Subscribe Newsletter
Subscribe today to hear first about Nano Vacuum's new and exciting technology
Enter your email: