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Fittings

How to fit Cri/oFlex into fridge?

To provide reliable and easy installation the following fittings can be shipped with the flex.

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Thermal Clamps

Reliable Thermalization
Easy Installation
Universally Fridge Compatible

Vacuum Feedthroughs

High Density
KF25, KF40, ISO100
High Vacuum Compatible

Brackets

Securely Mounted
Easy To Install
Custom design

Multi-Flex in One Clamp

Secure and thermalize multiple substrates in a single clamp, simplifying routing while maintaining strong thermal performance.

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Planar High-Contact Design

Large surface area and thin laminates improve thermal contact, helping reduce thermal gradients and unwanted thermal noise.

Thermal Clamps

Stage-by-Stage Thermalization to Reduce Thermal Noise

To properly thermalize the flex and suppress thermal noise, dedicated thermal clamps are installed at each cryogenic stage. Thanks to the planar geometry, large contact surface, and thin laminate structure, Cri/oFlex® achieves efficient heat sinking compared to traditional coaxial solutions. This design also supports compact integration, allowing multiple substrates to be secured and thermalized within a single clamp.

Clamps at Every Stage

Thermal clamps are provided across cryogenic stages to steadily sink heat and keep the flex at the intended temperature profile.

100%

Stagewise Thermal Anchoring

100%

Large Area Heat Sink

100%

Multi-flex One Plank

Why It Matters

Cleaner Signals Through Better Thermal Contact

Strong thermalization keeps the flex stable across stages and reduces thermally driven noise in sensitive measurements. By combining efficient heat transfer with compact mounting, thermal clamps help maintain reliable performance without adding bulky coaxial complexity.

KF25

Fit up to 2 flexes, 16 channels in a single KF25 Flange

KF40

Up to 4 flexes, 32 channels in a single KF40 flange

Vacuum Feedthroughs

Reliable Vacuum Feedthroughs for Clean Signal Routing

Our Cri/oFlex product can be potted in various vacuum feedthroughs. This allows for a hermetically sealed high density rf wiring solution to bridge the pressure difference between ambient pressure and high vacuum systems. Our vacuum feedthroughs allow up to 32 channels in a standard KF40 port with leak rates below 1.2⋅10^(−9) mBar L/s and outgassing rates below 6⋅10^(−8) mBar L/s. Every vacuum feedthrough can be provided with a mounting system to securily mount our SMA and SMP breakouts at ambient pressure.

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ISO100

Up to 10 flexes,80 channels in a single ISO100 flange

32 CH

KF40 Capacity

1.2×10⁻⁹

Leak Rate (mBar L/s)

6×10⁻⁸

Outgassing (mBar L/s)

Integration Ready

Vacuum-to-Ambient Interface Made Simple

By combining high-density routing, hermetic sealing, and secure breakout mounting, our vacuum feedthroughs simplify cryostat integration while preserving vacuum integrity and ensuring stable RF connections at room temperature.

Secure Connector Mounting

Stabilizes SMA/SMP connector blocks on vacuum ports and thermal stages to prevent movement and maintain consistent connections.

Easy Install, Broad Fit

Universal-friendly designs simplify installation and help achieve a clean, reliable mechanical interface in many cryostat layouts.

Brackets

Mounting Brackets for Secure, Well-Thermalized Interconnects

To securely mount connector blocks on vacuum ports and thermal stages, we can supply dedicated bracket hardware. Designed for easy installation and broad compatibility, these brackets help keep the interconnect stable, aligned, and well thermalized for reliable performance. While many bracket sets are custom-designed for specific projects, most are easily interchangeable and can be reused across multiple system configurations.

Optimized Component Placement

Attenuators often dissipate the most power, so simulations help place them where sufficient cryostat cooling capacity is available.

100%

Stable Mechanical Support

Compatibility Focus

Custom Fit-to-System

Need a Fit Check?

Let’s Confirm Compatibility With Your System

If you want to know whether a bracket will fit your cryostat or stage layout, or if you need a custom design tailored to your geometry, reach out to our team. We can advise on the best mounting approach and provide hardware that keeps your interconnect secure, aligned, and well thermalized.

Nano Vacuum delivers world-leading vacuum, micro and nano-fabrication, and quantum-cryogenic solutions for researchers and innovators across Australia and New Zealand.