Aviation DC Contactor Mouting Frame JQ-83F

JQ-83F Military Aviation Contactor:

Direct Drop-in Replacement for CA090 LEACH

The JQ-83F Military Aviation Contactor is a precision-engineered, high-reliability replacement for the legacy CA090 LEACH contactor, specifically designed for critical aerospace power switching applications. As part of YM's comprehensive Military Aviation Contactor series, this component delivers superior performance in demanding aviation environments including drone systems, aircraft engines, and power distribution networks where operational reliability is paramount.

Engineered with full mechanical and electrical compatibility with existing CA090 LEACH installations, the JQ-83F offers enhanced performance characteristics while maintaining the exact form, fit, and function of the original component. Manufactured with the same rigorous quality standards applied to our extensive range of Military Metal Relays and High Power Aviation Contactors, this product provides a reliable solution for obsolescence management and system upgrades.

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Technical Specifications

Electrical Performance Parameters

• Coil Power Consumption: (0.3 ~ 0.43)W – Optimized for energy efficiency in Aircraft Electrical Systems
• Contact Load Capacity & Operational Life:
  • Resistive Load Rating: 1A at 28V DC for minimum 100,000 operational cycles
  • Low-Level Signal Switching: (10~50)μA, (10~50)mV for 100,000 cycles (ideal for control circuits)
• Contact Resistance Specifications:
  • Initial Contact Resistance: ≤ 50mΩ
  • Maximum Resistance After Endurance Testing: ≤ 200mΩ
• Switching Timing Characteristics:
  • Actuation Time: ≤ 4ms
  • Release Time: ≤ 4ms
  • Minimum Reliable Actuation Pulse Width: (10～50) ms

Environmental & Physical Specifications

• Dielectric Withstand Voltage:
  • Standard Atmospheric Conditions: 500V RMS, 50Hz
  • Low Pressure/High Altitude Conditions: 250V RMS, 50Hz (maintains safety at altitude)
• Insulation Resistance Performance:
  • Initial Insulation Resistance: > 500 MΩ
  • Minimum After Accelerated Life Testing: > 50 MΩ
• Weight: < 3 grams – Lightweight construction for aerospace weight optimization
• Hermetic Sealing Standard: Maximum leakage rate ≤ 1 × 10⁻³ Pa·cm³/s – Ensures environmental protection
• Reference Conditions: All electrical performance data referenced at 25°C (77°F) ambient temperature

Product Features & Advantages

• Full CA090 LEACH Compatibility: Exact mechanical dimensions and electrical characteristics ensure seamless replacement without system modifications or redesign.
• Enhanced Reliability & Longevity: Engineered for 100,000+ operational cycles, exceeding typical maintenance intervals and reducing total lifecycle costs for aircraft operators.
• Dual-Purpose Switching Capability: Designed to handle both standard power circuits (1A/28VDC) and sensitive low-level control signals, offering versatility similar to advanced PCB Signal Relays.
• Military-Grade Environmental Protection: Hermetic sealing provides complete protection against moisture, dust, fuel vapors, and corrosive agents, meeting standards comparable to Aviation Oil Sealed Valves.
• Fast Response Characteristics: Sub-4ms switching times ensure rapid system response critical for flight control and safety-critical applications.
• High-Altitude Performance: Maintains specified dielectric strength under reduced atmospheric pressure conditions, essential for aircraft operating envelopes.
• Weight-Optimized Design: Lightweight construction (<3g) contributes to overall aircraft weight reduction goals without compromising durability.
• Vibration & Shock Resistance: Designed to withstand harsh aerospace vibration profiles, reflecting YM's expertise in Military Electronic component manufacturing.
• Improved Manufacturing Consistency: Modern production techniques ensure tighter tolerances and more consistent performance than original CA090 units.
• Assured Supply Availability: Eliminates dependency on obsolete CA090 LEACH components with reliable, ongoing production.

Installation & Replacement Procedure

For successful integration of the JQ-83F as a direct CA090 LEACH replacement, follow these systematic steps:

1. System Compatibility Verification: Confirm the existing system operates at standard aircraft voltage (typically 28V DC) and that load currents fall within the contactor's 1A rating.
2. Physical Compatibility Check: Verify the JQ-83F matches the CA090's mechanical footprint, mounting hole pattern, and terminal configuration.
3. Safe System Preparation: Follow proper aircraft maintenance procedures to de-energize the system. Implement lock-out/tag-out protocols for safety.
4. Direct Replacement Installation: Remove the existing CA090 contactor and install the JQ-83F using the original mounting hardware. Ensure proper torque on all electrical connections per aircraft maintenance manuals.
5. Wiring Integrity Verification: Confirm all connections match the original wiring configuration. For control circuits operating at low signal levels, ensure practices align with those used for sensitive components like Aviation Temperature Sensors.
6. Comprehensive Functional Testing: Before system restoration, perform contact resistance measurement, actuation timing verification, and insulation resistance testing.
7. Operational Validation: Conduct system-level testing under controlled conditions to validate performance matches or exceeds original specifications.

Application Scenarios

The JQ-83F is specifically engineered for critical power management applications across various aerospace platforms:

• Legacy Aircraft System Modernization: Direct replacement for CA090 LEACH contactors in older commercial, military, and general aviation aircraft.
• Unmanned Aerial System Power Management: Battery system isolation, motor controller power switching, and high-current payload control in drones and UAVs.
• Aircraft Engine Control Circuits: Starter motor engagement, generator control, fuel pump switching, and auxiliary power unit management.
• Avionics Power Distribution Networks: Primary power switching for communication, navigation, and radar systems in both manned and unmanned platforms.
• Ground Support & Maintenance Equipment: Power control in aircraft maintenance systems, test stands, and ground power distribution units.
• Military System Integration: Integration with weapon systems, electronic warfare equipment, and other Military Aviation Connectors and components.
• Related High-Reliability Systems: Suitable for applications requiring the reliability standards of Industrial Power Relays in aerospace-specific form factors.

Value for Aviation Maintenance & Procurement: The JQ-83F provides a cost-effective obsolescence management solution with improved reliability and assured supply chain continuity. Sourcing from YM offers access to a manufacturer with proven expertise in Aviation Contactor for Aircraft systems and complementary components like Hydraulic Circuit Breakers and Aviation Magnetic Valves.

Certifications & Compliance

The JQ-83F is manufactured in facilities adhering to aerospace quality management systems and is designed to meet or exceed the original CA090 LEACH performance specifications. Our production and validation processes align with:

• Relevant MIL-STD specifications for environmental stress testing (vibration, shock, temperature cycling)
• Aerospace industry standards for power switching components and form-fit-function replacements
• Comprehensive material traceability and lot control protocols
• RoHS compliance available as standard or upon specific customer request

We provide complete technical documentation packages including test reports, material certifications, compliance statements, and cross-reference documentation to support integration into certified aerospace platforms and maintenance programs.

Customization Options

While designed as an exact CA090 replacement, YM offers customization capabilities for specific application requirements:

• Electrical Configuration Options: Custom coil voltages, alternative contact materials for specific load profiles, or modified current ratings
• Termination & Connection Solutions: Various terminal styles, custom lead configurations, or integration with specific Military aircraft Plug systems
• Mechanical Adaptations: Alternative mounting features, custom orientation indicators, or special marking requirements for maintenance identification
• Enhanced Testing & Validation: Additional qualification testing protocols, extended environmental stress screening, or specific performance validation testing
• Identification & Traceability Features: Custom part numbering, serialization, date codes, or customer-specific labeling for maintenance tracking and inventory management
• Packaging Solutions: Specialized packaging for maintenance kits, bulk packaging for MRO facilities, or ESD-protective packaging for sensitive applications

Production & Quality Assurance Process

Each JQ-83F contactor undergoes a rigorous, documented manufacturing and testing regimen to ensure consistent quality and performance:

1. Material Qualification & Traceability: Aerospace-grade materials sourced from approved suppliers with full documentation and traceability
2. Precision Component Manufacturing: Critical components produced to exacting tolerances using controlled manufacturing processes
3. Automated Assembly with Verification: Consistent assembly using specialized fixtures with in-process verification of critical dimensions
4. Hermetic Sealing & Validation: Advanced sealing techniques followed by mandatory leak testing to verify environmental protection integrity
5. 100% Electrical Performance Testing: Comprehensive testing of every unit including contact resistance, switching timing, coil parameters, and dielectric strength
6. Comparative Performance Validation: Batch testing against original CA090 LEACH specifications to ensure equal or superior performance
7. Final Quality Audit & Documentation: Complete dimensional, functional, and documentation verification before protective packaging and shipment

This quality-focused process reflects our commitment across all product lines, from specialized Solid State Relays to complex Aviation Contactor systems and related components like Aviation Press Meters.

Frequently Asked Questions (FAQ)

Q1: Is the JQ-83F truly interchangeable with the CA090 LEACH without any modifications?

A1: Yes. The JQ-83F has been meticulously engineered to match the CA090 LEACH in all critical mechanical dimensions, mounting configurations, terminal layouts, and electrical characteristics. It is designed as a direct drop-in replacement requiring no system modifications.

Q2: What documentation is available to support maintenance and regulatory compliance?

A2: We provide comprehensive technical documentation including detailed data sheets, test reports, material certifications, compliance statements, and cross-reference documentation. These support maintenance activities and can assist with continued airworthiness documentation requirements.