Single Phase Aviation Contactors JQ-42F

Product Overview

The YM Military Aviation Contactor JQ-42F is a high-performance, single-phase power switching device specifically engineered as a direct, reliable replacement for the MZJ-50A contactor in aerospace and defense applications. Designed for drone systems, aircraft engines, and critical Aviation Electronics, this hermetically sealed component delivers superior reliability and compatibility in the most demanding environments. As part of YM's comprehensive aviation solutions—including Military Aviation Connectors and Aviation Temperature Sensors—the JQ-42F integrates seamlessly with systems requiring the same level of precision as Hydraulic Circuit Breakers and Aviation Magnetic Valves.

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Technical Specifications

Engineered for direct MZJ-50A replacement with enhanced performance:

• Coil Power Consumption: 0.3W to 0.43W operational range
• Contact Load & Electrical Life:
  • Resistive Load: 1A at 28V DC for 1×10⁶ operations
  • Low-Level Load: (10-50)μA at (10-50)mV for 1×10⁶ operations
• Contact Resistance: Initial ≤50mΩ; post-lifetime ≤200mΩ
• Switching Performance: Action time ≤4ms, release time ≤4ms (typical ≤3ms); requires (10-50)ms incentive pulse width
• Dielectric Strength: 500V RMS @ 50Hz (normal pressure); 250V RMS @ 50Hz (low pressure)
• Insulation Resistance: >500MΩ initially; >50MΩ after endurance testing
• Weight: Under 3 grams, matching MZJ-50A specifications
• Sealing Performance: Leakage rate ≤1.0×10⁻³ Pa·cm³/s (hermetic metal seal)
• Operating Temperature: Rated for standard 25°C conditions

Product Features & Advantages

1. Direct MZJ-50A Replacement: Fully compatible form, fit, and function for seamless system upgrades without redesign.
2. Advanced Hermetic Metal Sealing: Incorporates proprietary Metal Sealing technology identical to our Military Metal Relays, providing superior environmental protection.
3. Enhanced Reliability: Extended operational lifespan exceeding one million cycles, reducing maintenance frequency and total cost of ownership.
4. Optimized Thermal Performance: Low-power coil design compatible with thermal management systems using Aviation Cold Air Solenoid Valves.
5. Superior Contact Technology: Advanced contact materials ensure minimal arcing and stable performance throughout service life.

Installation & Replacement Procedure

For direct MZJ-50A replacement, follow these steps:

1. System Power Disconnection: Ensure complete power isolation from the aviation system before beginning replacement.
2. Existing Component Removal: Carefully disconnect wiring from the MZJ-50A contactor, noting terminal positions.
3. JQ-42F Installation: Mount the JQ-42F using existing mounting points, ensuring proper orientation.
4. Wiring Reconnection: Connect wires to corresponding JQ-42F terminals, matching the original MZJ-50A configuration.
5. System Verification: Conduct comprehensive functional testing under simulated operational conditions.

Application Scenarios

• MZJ-50A System Upgrades: Direct replacement in existing drone, UAV, and Aircraft Electrical Systems
• Aircraft Engine Control: Power switching for fuel systems, ignition circuits, and auxiliary units
• Aviation Power Distribution: Single-phase power control in distribution networks working with Aviation Ammeters
• Military System Modernization: Upgrading legacy systems in communications, radar, and electronic warfare platforms
• Aerospace Maintenance & Repair: Replacement part for ground support and maintenance operations

Procurement Value: The JQ-42F provides a cost-effective, reliable upgrade path for MZJ-50A systems, reducing maintenance costs, improving system reliability, and extending equipment lifespan while maintaining full compatibility.

Certifications & Compliance

Manufactured under quality systems meeting aerospace industry standards. The JQ-42F is designed to match or exceed original MZJ-50A specifications while incorporating modern manufacturing techniques and materials. Our production processes ensure full traceability and performance consistency, as demonstrated across our product range including Military Pressure Sensors and Aviation Encoding Switches.

Customization Options

While designed as a direct replacement, we offer limited customization:

• Custom coil voltage configurations for specific system requirements
• Specialized wiring interfaces compatible with existing Military Aviation Connector systems
• Modified terminal configurations for legacy system integration
• Application-specific testing and validation protocols

Production & Quality Assurance Process

1. Material Selection: Aerospace-grade materials with enhanced properties over original specifications
2. Precision Manufacturing: Automated assembly ensuring dimensional compatibility with MZJ-50A systems
3. Hermetic Sealing: Advanced sealing techniques providing superior environmental protection
4. Comprehensive Testing: 100% electrical testing including compatibility verification with MZJ-50A systems
5. Environmental Validation: Rigorous testing for vibration, thermal cycling, and seal integrity

This quality-first approach, applied to all our products including Solid State Relays and Aviation Rocker Switches, ensures every JQ-42F delivers reliable performance as a direct MZJ-50A replacement.