High-Temperature Phase-Stable RF Cables | Up to 400°C Thermal Endurance | Vinstronics

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Up to 40 GHz 400°C @ 400s Exposure Harsh-Environment RF Routing

High-Temperature Phase-Stable RF Cables

Phase-stable coaxial assemblies engineered for stationary RF routing in harsh thermal environments. Select the right cable path by frequency band, bend envelope, and thermal exposure profile.

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Need a faster recommendation? Send frequency, target thermal profile, and required length.

High-temperature phase-stable RF cable assembly for harsh-environment stationary RF routing and short-term 400°C exposure

Built for Signal Integrity Under Severe Thermal Stress

High-temperature links require specialized material architectures to prevent dielectric degradation and phase shifting during heat exposure.

Short-Term Thermal Survivability

Engineered to withstand transient thermal peaks up to 400°C for 400 seconds without structural failure.

Stationary Phase Stability

Utilizes low-density PTFE (LD PTFE) dielectric to support stable phase behavior and low-loss transmission during thermal shifts.

Selection for Real Installation Constraints

Choose by frequency band, bend envelope, and thermal exposure rather than by generic cable size alone.

Choose the Right High-Temperature Cable Path

Start with the required frequency band, then select the physical footprint that matches your dimensional and mass routing constraints.

Vinstronics IR36 High-Density Aerospace Routing

High-Density Thermal Test

Optimized for dense packaging and tight-space high-frequency routing up to 40 GHz.

Short Code: IR36

Typical Use: Aerospace routing, compact TVAC

Consult Compact Build

Vinstronics IR40 Extreme Temperature Testing Chamber

Versatile Harsh Environment

Provides an optimal midpoint between mechanical flexibility and 40 GHz electrical capability.

Short Code: IR40

Typical Use: Thermal cycling, onboard RF links

Consult Balanced Build

Vinstronics IR50 Robust High-Temperature Onboard Link

Lower-Frequency Robust Link

Larger cable format engineered to support rigorous signal integrity in applications up to 26.5 GHz.

Short Code: IR50

Typical Use: Heavy-duty thermal links, EMI environments

Consult Robust Build

Material Architecture: PI + PTFE Jacket System

The thermal endurance of this series relies on a specialized PI + PTFE outer jacket protecting the multi-layer silver-plated copper shielding and LD PTFE core. This specific material stack sustains mechanical baseline properties and preserves > 90 dB shielding effectiveness under severe ambient temperatures, preventing the rapid degradation seen in standard interconnects.

LD PTFE Dielectric Silver-Plated Shielding PI + PTFE Outer Jacket

Core Selection Matrix

Use this matrix to narrow the frequency path first, then confirm whether diameter, bend limits, and thermal exposure fit your routing environment.

Short Code	Max Frequency	Outer Diameter	Static Bend Radius	Dynamic Bend Radius	Operating Temperature	Short-Term Exposure
IR36	40 GHz	3.60 mm	18 mm	36 mm	-55°C to +200°C	400°C @ 400 s
IR40	40 GHz	4.00 mm	20 mm	40 mm	-55°C to +200°C	400°C @ 400 s
IR50	26.5 GHz	5.40 mm	27 mm	54 mm	-55°C to +200°C	400°C @ 400 s

Engineering Note: Continuous operational exposure for all models is -55°C to +200°C. Realizing the 400°C short-term endurance capability necessitates specialized high-temperature connectors and rigorous termination protocols. Final interface feasibility should be confirmed against the actual thermal exposure profile and target operating frequency.

Engineering FAQ

What is a high-temperature phase-stable RF cable?

It is a high-temperature-resistant RF cable designed for stationary harsh-environment routing where phase stability and short-term thermal exposure both matter.

How is it different from a standard phase-stable RF cable?

It is designed for harsher thermal environments, using a material stack and shielding architecture intended for stationary phase-stable RF routing under elevated temperature exposure.

How do I choose between IR36, IR40, and IR50?

Start with the maximum operating frequency. Then confirm outer diameter, static and dynamic bend radius, and whether the routing envelope and thermal profile fit the intended installation.

Can the cable really withstand 400°C?

The 400°C for 400 seconds condition is a short-term reference capability. Achieving that condition in a final assembly requires specialized high-temperature connectors and rigorous termination protocols.

Are standard RF connectors suitable for high-temperature exposure?

Not always. Final interface selection depends on cable size, target frequency, and the specific thermal exposure profile of the application.

What information is required for a quote?

Please provide connector type on each end, required cable length, target operating frequency, expected maximum thermal exposure, bend requirements, and any special environmental constraints.

Download Technical Guide

Download the technical guide for full attenuation references, thermal exposure profiles, dimensional limits, and model-level selection data across IR36, IR40, and IR50.

Download Full PDF

Request Build Recommendation

Submit your target frequency, expected thermal limits, connector interfaces, and required length. Our team will verify assembly feasibility. Final high-temperature capability depends on both cable construction and connector suitability.

Request Engineering Recommendation