GORE® Space Cables and Assemblies: Symmetrical Interconnects

In space, signal speed and integrity can be the difference between mission success and failure. Small, lightweight and extremely flexible, GORE® Symmetrical Interconnects deliver transmission rates up to 1 Gbit/s while withstanding the harsh conditions of space.

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assemblies

Aerospace Spaceflight

This document details the features and benefits of GORE® Space Cables and Assemblies Symmetrical Interconnects.

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Overview

Improve Signal Transmission for Spacecraft Electronics

Signal speed and integrity are essential for effective communication among spacecraft components. Cables — the lifeline of data transmission — are often run through very tight spaces in the spacecraft. For cables to reliably maintain signal integrity, they need to be flexible, and they need to be tough.

GORE Symmetrical Interconnects offer the best combination available for spacecraft component connections: solid mechanical durability, and excellent signal integrity. Small, lightweight and extremely flexible, these balanced, single-twinax cables deliver data transmission rates as high as 1 Gbit/s to maintain outstanding signal integrity.

The cables meet the stringent requirements of ESCC-3902/002, and are listed on the ESA QPL (Qualified Parts List) — providing the quality assurance critical to mission success in outer space.

The Science Behind the Cables
ePTFE in our cables helps to reduce interference between electrical systems.

ePTFE in our cables helps to reduce interference between electrical systems.

The key to the outstanding performance of Gore symmetrical interconnects is the proprietary material used in the cable insulation: expanded polytetrafluoroethylene (ePTFE).

By incorporating ePTFE into the cables, Gore is able to provide tight impedance control to reduce interference, with balanced transmission between separate lines within the cable. The microstructure of the ePTFE material makes Gore symmetrical interconnects lighter than other cables with comparable performance and minimizes the problems associated with balancing difficult mass budgets.

Features & Benefits

GORE Symmetrical Interconnects dependably feature:

  • high signal speed up to 1 Gbit/s
  • high density/reduced mass
  • balanced, shielded lines
  • high-speed link among units

By pairing these features with the material benefits of PTFE, our cables deliver:

  • excellent compatibility among system components
  • reduced costs for system integration and maintenance
  • design flexibility of a modular system
  • improved reliability from rugged materials used in construction
  • valued reliability delivered from an ESA-qualified and a DIN EN ISO 9001:2000-certified manufacturing facility

Additionally, Gore’s worldwide engineering team provides sales and technical support. If you have any questions about GORE® Symmetrical Interconnects, please contact us.

Applications

Aboard spacecrafts, GORE Symmetrical Interconnects are typically used in:

  • digital signal processors
  • high-resolution cameras and sensors
  • high-speed subsystem interconnects

To date, many critical missions have incorporated our symmetrical interconnects, including:

  • European Remote Sensing Satellite (ERS1/ERS2)
  • Polar Platform
  • ENVISAT satellite
  • XMM space observatory
  • International Space Station (ISS)
  • INMARSAT

Specifications

All Gore symmetrical interconnects meet these technical specifications according to ESCC 3902/002 and are listed on the ESA QPL.

Property Value
Operating temperature range -200°C to +180°C
Maximum temperature for short periods 260°C
Dielectric material Expanded PTFE
Outer jacket PFA
Conductor construction Concentric silver-plated copper
Operating voltage 100 V RMS
Maximum weight 36 g/m
Maximum diameter 5.2 mm
Bending radius 10 x outer diameter (repeated) or 6 x outer diameter (once)
Transmission Rate Up to 1 Gbit/s
Maximum capacitance: conductor to conductor 68 pF/m

 

Ordering Information

GORE Symmetrical Interconnects vary by gauge size and impedance. Refer to your application to determine the appropriate part number, and please contact us with any questions.

Part Number  Gauge Size (AWG) Impedance (ohm) 
GBL-075-24  24 75
GBL-100-22  22 100 (with drain wire) 
GBL-120-30  30 120
GBL-120-28  28 120
GBL-120-26  26 120
GBL-120-24  24 120

 

Resources

Learn more about GORE Symmetrical Interconnects in a data sheet and a white paper discussing the properties of cables that ensure peak electrical performance.

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