GT Quadrax | Rugged Differential Pair Connector

The GT Quadrax insert is a rugged, high-speed differential pair connector designed for harsh industrial, transportation, and heavy-equipment environments. It delivers controlled impedance performance while leveraging the durability of the proven GT Series platform.

Table of Contents

• Overview
• Key Features & Benefits
• Typical Applications
• Technical Details
• Differential Pair Connector Performance
• Resources & Support

Overview

The GT Quadrax insert is engineered for designers who require a differential pair connector capable of delivering stable, high-speed communication in challenging operating conditions. As a high-performance insert option within the GT Series, the Quadrax design supports Ethernet, CAN, RS-485, and other digital protocols used in environments where electrical noise, vibration, and contaminants can degrade signal quality.

Each Quadrax insert includes two isolated differential pairs arranged within a controlled-impedance structure that maintains consistent electrical performance throughout the interface. This precision dielectric alignment helps minimize crosstalk, reduce skew, and preserve signal integrity. Combined with the mechanical ruggedness of the GT Series, the Quadrax insert enables dependable communication in industrial control systems, on-vehicle networks, and mission-critical equipment.

Key Features & Benefits

The GT Quadrax insert offers several technical advantages for high-speed differential signaling. Its matched-impedance design reduces reflections, mismatch losses, and packet errors. The isolation barrier between differential pairs enhances noise immunity, supporting clean data transmission even in spaces where drives, motors, or high-current bus systems generate significant electromagnetic interference.

The insert also incorporates a shielding structure to improve EMI performance. Mechanically, it benefits from the GT Series’ durable shell construction, environmental sealing, and secure coupling mechanism. Designers can also combine Quadrax contacts with power and signal contacts in the same connector, enabling hybrid cable assemblies and reducing harness complexity.

Typical Applications

The GT Quadrax insert is used in systems where high-speed data and rugged reliability must coexist. Common applications include rail control electronics, industrial automation, battery management systems, heavy-duty vehicle communication networks, power conversion equipment, and supervisory control assemblies. These systems demand a differential pair connector that can maintain stable performance despite vibration, temperature swings, and electrical interference.

Its controlled-impedance performance supports Ethernet-based architectures used in transportation, renewable energy, and factory automation. The ability to combine data, power, and control contacts in one connector simplifies installation in space-constrained footprints.

Technical Details

The Quadrax insert’s geometry is optimized to maintain consistent impedance across the mated interface, reducing insertion loss and enabling reliable high-speed performance. Its four contacts are spaced precisely to achieve differential pair matching, and the engineered dielectric helps control skew and maintain predictable electrical behavior.

As part of the GT Series, the insert delivers high mechanical durability, environmental sealing, and compatibility with standard GT backshells and accessories. Hybrid power/data configurations can be implemented easily, helping engineers minimize connector count and simplify wire routing.

Differential Pair Connector Performance

The GT Quadrax insert provides the electrical stability required of a differential pair connector in harsh environments. Its controlled impedance structure helps ensure low skew, low crosstalk, and predictable data performance across a wide range of frequencies. These attributes make it suitable for high-bandwidth networking, industrial communication, and real-time control systems.

Resources & Support

Engineers evaluating high-speed communication in demanding environments can rely on GT Quadrax as a proven differential pair connector solution. For more information, documentation, or design-in assistance, our technical team can help identify configurations that meet your performance and environmental requirements.

Contact us to discuss your differential pair connector application today.

Learn more about compatible GT Series shells and accessories: GT Series Overview. Reference controlled impedance and differential signaling principles from IEEE: IEEE Standards.