YF7-1QZ or T Separation (Breakaway) Electrical Connector

YF7-1QZ/T Separation (Breakaway) Electrical Connector | Pneumatic Sealing for Aerospace

The YF7-1QZ/T Separation Connector series represents a specialized solution for applications requiring both electrical disconnection and gas path sealing during separation events. Designed to meet the rigorous demands of aerospace and defense systems, these connectors integrate a single-core gas path within either the plug (YF7-1QT) or receptacle (YF7-1QZ), enabling simultaneous transfer of electrical signals and pneumatic media. With the ability to withstand 60 MPa gas pressure and maintain leakage rates below 1×10⁻⁶ Pa·m³/s, these connectors ensure system integrity in the most critical separation scenarios—from missile launch systems to spacecraft stage separation. Built to endure extreme vibration, shock, and acceleration, the YF7 series delivers the reliability that mission-critical applications demand.

Product Descriptions from the Supplier

The YF7-1QZ/T Separation (Breakaway) Electrical Connector is a precision-engineered interconnect solution designed for applications requiring reliable electrical disconnection combined with pneumatic gas path sealing. Available in two configurations—YF7-1QT (plug with integrated single-core gas path) and YF7-1QZ (receptacle with integrated single-core gas path)—these connectors enable simultaneous transmission of electrical signals and pressurized gases across a separation interface.

At the core of the design is the ability to withstand extreme pneumatic pressures up to 60 MPa while maintaining an ultra-low leakage rate of ≤1×10⁻⁶ Pa·m³/s, ensuring no loss of gas or pressure differential during operation. The mechanical separation mechanism is precisely calibrated to release with a force of 12–35 N, ensuring positive separation under commanded or emergency conditions while preventing inadvertent disconnect.

Engineered for the harshest environments, the YF7 series is qualified to withstand random vibration up to 0.3 G²/Hz (20 Grms), sinusoidal vibration of 150 m/s², shock peaks of 735 m/s², and constant acceleration of 30 g. With an operating temperature range of -45°C to +85°C and a mechanical life of 500 mating cycles, these connectors deliver long-term reliability in aerospace launch systems, missile interfaces, naval separation mechanisms, and other critical applications where both electrical and pneumatic connections must be broken cleanly and reliably.

Description

The connector features a robust three-start threaded coupling system with an integrated ratchet anti-loosening mechanism, ensuring secure mating under severe vibration while enabling rapid connection and positive lanyard release when required. A precision-engineered grounding spring maintains continuous electrical continuity between plug and receptacle shells, providing superior EMI shielding performance that meets stringent military requirements.

For the 25-20 interface configuration, the connector supports hybrid signal transmission combining:

• Electrical signals (low frequency)
• GJB289A data bus (high frequency)
• Two fiber optic ports (reserved for optical signal transmission)

Contacts are terminated via crimping using advanced tooling systems, supporting multiple contact types including 12# shielded, 12# coaxial, and 8# twinaxial configurations, all interchangeable within the same connector shell. Various shielded cable clamp options provide both mechanical cable retention and continuous EMI shielding from cable braid to connector shell.

With IP65-rated sealing at both the mating interface and rear cable entry, combined with robust vibration resistance and reliable separation characteristics, the GJB599 Series is fully qualified for the most severe airborne environments.

Specifications

Applications

• Aerospace Launch Vehicles: Stage separation interfaces requiring simultaneous electrical disconnect and gas path sealing.
• Missile Systems: Launch tube interfaces where pneumatic pressure is used for ejection.
• Spacecraft: Deployment mechanisms for satellites, solar arrays, or scientific instruments.
• Naval Systems: Torpedo launch and separation mechanisms.
• Unmanned Aerial Vehicles (UAVs): Pneumatic launch and recovery systems.
• Industrial Safety Systems: Emergency disconnect applications combining electrical and pneumatic lines.

Functionality

• Mechanical Separation: Precision breakaway mechanism releases with controlled force (12–35 N) to ensure positive separation.
• Integrated Gas Path: Single-core gas channel allows simultaneous transmission of pneumatic media alongside electrical signals.
• High-Pressure Sealing: Internal seals withstand 60 MPa gas pressure with ultra-low leakage (≤1×10⁻⁶ Pa·m³/s).
• Dual Configuration: Choose gas path in plug (YF7-1QT) or receptacle (YF7-1QZ) to match system architecture.
• Vibration/Shock Survivability: Tested to severe aerospace dynamic environments.
• Environmental Tolerance: Reliable operation from -45°C to +85°C.

Key Features​​​​​​​

• 60 MPa Pneumatic Capability: Unmatched pressure withstand for demanding gas systems.
• Ultra-Low Leakage: <1×10⁻⁶ Pa·m³/s ensures no loss of critical gases.
• Controlled Separation Force: Calibrated 12–35 N range prevents premature or delayed separation.
• Aerospace Qualification: Tested to rigorous vibration, shock, and acceleration profiles.
• Flexible Integration: Available as plug or receptacle with gas path, enabling optimal system design.
• Long Mechanical Life: 500 cycles for ground test and operational reuse.
• Compact Design: Space-efficient dimensions suitable for confined installations.

Custom Design

The YF7 platform can be adapted to meet specific mission requirements:

• Custom Gas Path Configurations: Modify gas channel diameter, sealing materials, or pressure ratings.
• Alternative Separation Forces: Adjust mechanism to meet specific release force requirements.
• Special Materials: Select shell materials and platings for enhanced corrosion resistance or lightweight needs.
• Hybrid Contact Arrangements: Integrate additional electrical contacts alongside the gas path.
• Cable Assembly Integration: Complete harness assemblies with gas tubing and electrical cabling.
• Non-Standard Interfaces: Develop custom mounting flanges or coupling mechanisms.

Why Choose MXTD

At MXTD, we specialize in mission-critical interconnect solutions for the most demanding aerospace and defense applications. The YF7-1QZ/T separation connectors exemplify our commitment to engineering excellence—combining precision mechanical design with advanced sealing technology to deliver reliable performance where failure is not an option. Manufactured under strict enterprise standard Q/21EJ2263, each connector undergoes rigorous testing including leak verification, separation force calibration, and dynamic stress screening. Our team brings decades of experience in separation systems, working closely with customers to ensure that every interface meets the unique requirements of the platform. When you choose MXTD, you're partnering with a team dedicated to the success of your mission, from concept through qualification and production.

FAQ

Q: What is the difference between YF7-1QT and YF7-1QZ?
A: YF7-1QT integrates the single-core gas path into the plug (cable-attached half), while YF7-1QZ integrates the gas path into the receptacle (panel-mounted half). Choose based on your system's gas routing requirements.

Q: What type of gas media can be used?
A: The connector is compatible with various gases (air, nitrogen, helium, etc.) provided they are compatible with the internal sealing materials. Contact our engineering team for specific media compatibility.

Q: What is the maximum operating pressure?
A: The connector is qualified for 60 MPa (approximately 600 bar or 8700 psi) maximum working pressure.

Q: Can the connector be reused after separation?
A: Yes, the mechanical life is rated for 500 mating/separation cycles, making it suitable for ground testing and multiple missions.

Q: What is the leakage rate?
A: The maximum allowable leakage rate is ≤1×10⁻⁶ Pa·m³/s (equivalent to 1×10⁻⁵ cc/s at standard conditions).

Q: What is the separation force?
A: The separation force is calibrated to 12–35 N, ensuring positive release while preventing inadvertent disconnect.

Q: What environmental conditions can it withstand?
A: Operating temperature -45°C to +85°C, random vibration 0.3 G²/Hz (20 Grms), shock 735 m/s², and acceleration 30 g.

Q: Are there options for additional electrical contacts?
A: The standard design includes a single gas path. Custom versions with additional electrical contacts may be available—please consult our engineering team.

Q: What materials are used?
A: Shell materials are selected for aerospace applications, with options for corrosion-resistant finishes. Contact sealing materials are compatible with high-pressure gases.

Q: Do you provide mating connectors?
A: Yes, both plug (YF7-1QT) and receptacle (YF7-1QZ) are available. For a complete system, order both halves.

Contact Us

Ready to integrate the YF7-1QZ/T separation connector into your aerospace or defense system? Our technical experts are standing by to discuss your specific application requirements and recommend the optimal configuration—whether you need standard units for immediate deployment or custom-engineered solutions for specialized separation events.

Reach out to our team today: manager04@mxtdinfo.com

Let us show you how our YF7 series separation connectors can deliver reliable electrical and pneumatic disconnect performance in the most critical moments of your mission.