Product Attributes

Model No.: JQ-QY42F

Brand: YM

Ambienttemperature: -55℃~85℃

Random Vibration: See the vibration spectrum diagram. For other spectra, consulttechnicians or commission verification

Relativehumidity: 98% at 40℃

Cyclone: 7.49kPa(18000m)

Coil Powerconsumption: Start-up power consumption: ≤218.5 W (transient value, duration approximately25 ms) Maintain power consumption: ≤16.5 W (stable value)

Contact Load Andlife: main contacts ： Resistive, 600A,28 Vd.c., 3× 10⁴ motor, 300A,28 Vd.c., 1× 10⁴ Sensitivities, T=5 ms, 300A,28Vd.c., 1×10⁴ times Auxiliary contacts: resistive,5A,28 Vd.c., 3× 10⁴ times

Dielectricwithstandvoltage: Normal atmospheric pressure: Main contact: 1250Vr.m.s., 50HzAuxiliary contacts: 500 Vd.c.Low pressure: 300 Vr.m.s., 50 Hz

Insulationresistance: ≥100 MQ

Contact Voltage Dropor Contact Resistanc: Main contact voltage drop: initialvalue ≤150 mV Life test with ≤180 mV auxiliary contact resistance: initial value ≤200mQLife test after≤600 mQ

Weight: ≤550g

Time Parameter: Action time: ≤25 msRelease time: ≤15 ms

JQ-QY42F Military Aviation Contactor:

High-Reliability Power Switching Solution for Aerospace Systems

The JQ-QY42F Military Aviation Contactor is a precision-engineered power switching device specifically designed for demanding aerospace applications, including drone systems, aircraft engines, and critical aviation power distribution networks. As a key component in YM's extensive Military Aviation Contactor series, this product delivers exceptional reliability and performance under extreme operating conditions.

Manufactured to exacting military specifications and utilizing the same rigorous quality standards as our Military Metal Relays and High Power Aviation Contactors, the JQ-QY42F ensures dependable operation where failure is not an option. Its compact design and robust construction make it ideal for modern aerospace applications where space, weight, and reliability are critical considerations.

Product Images & Visual Documentation

JQ-QY42F Aviation Contactor application and wiring schematic

Technical Specifications

Electrical Characteristics

Coil Power Consumption: 0.3W - 0.43W range
Contact Load Capabilities:
- Power Switching: 1A at 28V DC, resistive load
- Signal Switching: 10-50μA at 10-50mV
- Operational Life: 100,000 cycles minimum for both load types
Contact Resistance Performance:
- Initial Resistance: ≤ 50mΩ
- After Life Testing: ≤ 200mΩ
Timing Performance:
- Actuation Time: ≤ 4ms
- Release Time: ≤ 4ms
- Minimum Pulse Width: 10-50ms for reliable operation

Environmental & Mechanical Properties

Dielectric Strength:
- Standard Conditions: 500V RMS, 50Hz
- High Altitude Conditions: 250V RMS, 50Hz
Insulation Resistance:
- Initial: > 500MΩ
- After Testing: > 50MΩ
Weight: Less than 3 grams
Sealing Performance: Maximum leakage rate: 1×10⁻³ Pa·cm³/s
Reference Conditions: All specifications referenced at 25°C

Key Features & Competitive Advantages

Military-Grade Durability: Constructed to withstand extreme aerospace environments with vibration resistance comparable to Military Electronic components
Hermetic Sealing Technology: Complete environmental protection against moisture and contaminants, matching the standards of Aviation Oil Sealed Valves
Dual-Function Design: Capable of handling both power switching and precision signal circuits, offering versatility similar to advanced PCB Signal Relays
Fast Response Time: 4ms maximum switching speed for critical control applications
Extended Service Life: 100,000+ operational cycles minimize maintenance requirements and total cost of ownership
Lightweight Construction: Less than 3g weight contributes significantly to aircraft weight optimization
Energy Efficiency: Low power consumption reduces system heat generation and power requirements
Altitude Performance: Maintains electrical integrity at reduced atmospheric pressures encountered at high altitudes
Compact Footprint: Space-saving design ideal for modern, densely packaged aerospace systems

Installation & Integration Procedure

For optimal performance and reliability, follow these installation guidelines:

System Compatibility Check: Verify compatibility with 28V DC aircraft systems and ensure load currents do not exceed 1A rating
Environmental Assessment: Confirm installation location meets specified temperature and vibration requirements
Safety Protocol Implementation: De-energize system following established aircraft maintenance procedures
Mechanical Installation: Mount securely using provided hardware, applying proper torque specifications
Electrical Connection: Connect terminals according to provided wiring diagram, using installation practices consistent with Aviation Temperature Sensor installations for signal circuits
Pre-Commissioning Testing: Perform comprehensive electrical testing including contact resistance measurement and switching timing verification
System Validation: Conduct operational testing under controlled conditions to validate performance

Application Areas & Industry Use Cases

The JQ-QY42F is ideally suited for the following applications:

Unmanned Aerial Systems: Power distribution, motor control, battery management, and payload switching in drones and UAVs
Aircraft Engine Control Systems: Starter circuits, generator control, fuel system management, and auxiliary power unit switching
Avionics Power Distribution: Primary power switching for navigation systems, communication equipment, and radar installations
Military & Defense Systems: Integration with weapon systems, surveillance platforms, and specialized Military Aviation Connectors
Ground Support Equipment: Power control in aircraft test systems, maintenance equipment, and ground power units
Next-Generation Aviation: Electric aircraft, hybrid systems, and advanced air mobility platforms
Industrial Applications: High-reliability systems requiring performance standards comparable to Industrial Power Relays

Value Proposition for Procurement Professionals: The JQ-QY42F delivers reliable performance with extended service life, reducing maintenance costs and operational downtime. Partnering with YM provides access to integrated solutions including Hydraulic Circuit Breakers, Aviation Magnetic Valves, and complementary components for complete system compatibility.

Quality Standards & Compliance

Manufactured under stringent aerospace quality management systems
Compliance with relevant MIL-STD specifications for environmental testing
Complete material traceability and batch control
RoHS compliance available upon request
Comprehensive documentation supporting regulatory compliance
Test reports and certification documentation provided

Customization Capabilities

Electrical Customization: Modified coil voltages, specialized contact materials, and custom current ratings
Termination Options: Various connector configurations including compatibility with Military aircraft Plug systems
Mechanical Modifications: Custom mounting configurations, specialized housings, and orientation indicators
Testing Protocols: Enhanced testing, extended environmental validation, and specific performance testing
Identification Systems: Custom part numbering, serialization, date coding, and customer-specific markings
Packaging Solutions: Specialized packaging for maintenance kits, bulk configurations for MRO facilities, and ESD-protective packaging

Manufacturing Process & Quality Assurance

Every JQ-QY42F undergoes a comprehensive quality control process:

Material Certification: Aerospace-grade materials sourced from approved suppliers with full documentation
Precision Manufacturing: Controlled manufacturing processes ensuring exact dimensional tolerances
Automated Assembly: Consistent assembly with integrated quality verification at each stage
Sealing Process: Advanced hermetic sealing followed by comprehensive leak testing
Electrical Testing: 100% performance testing including all critical electrical parameters
Environmental Validation: Batch testing for vibration resistance, thermal performance, and accelerated life testing
Final Inspection: Complete dimensional, functional, and documentation verification

This quality-focused approach extends across our entire product portfolio, from specialized Solid State Relays to complex Aviation Contactor systems and complementary components.

Frequently Asked Questions

What distinguishes the JQ-QY42F from standard aviation contactors?

The JQ-QY42F features military-grade construction, hermetic sealing, dual-function capability, and altitude performance specifically engineered for demanding aerospace applications, setting it apart from conventional contactors.

Can this contactor handle both high-current and low-signal applications simultaneously?

Yes, the design supports dual-purpose operation, capable of managing 1A/28V power circuits alongside sensitive μA/mV signal circuits with equal reliability.

What is the expected operational lifetime?

Minimum 100,000 operational cycles under rated conditions, significantly exceeding typical maintenance intervals and reducing total lifecycle costs.

Is technical documentation available for system integration?

Complete documentation packages including detailed specifications, test reports, application notes, and integration guidelines are provided to support successful implementation.

What customization options are available?

Extensive customization capabilities include electrical modifications, mechanical adaptations, enhanced testing protocols, and specialized packaging solutions to meet specific application requirements.

What technical support is provided for integration projects?

Comprehensive technical support includes application engineering, integration guidance, compatibility assessment with related systems, and consultation on best practices for installation and operation.

How does the hermetic sealing benefit Aviation Applications?

Hermetic sealing provides complete environmental protection against moisture, dust, fuel vapors, and contaminants, ensuring long-term reliability in harsh aviation environments - comparable to requirements for critical components like Aviation Oxygen Valves.

Is the JQ-QY42F suitable for next-generation electric aircraft?

Yes, its advanced design characteristics including energy efficiency, reliable performance, and environmental protection make it well-suited for electric and hybrid-electric aircraft power management systems.