Military Metal Relay P3H-29 High Performance Component for Aviation & Drone Applications
Product Overview
The P3H-29 is a premium Military Metal Relay engineered as a high-performance component for demanding aviation, drone, and military applications. As a specialized Military Metal Sealing Relay within the Russian P3H series, this component combines heritage design compatibility with modern manufacturing excellence. Designed specifically for integration as a PCB Board Relay in drone electronics and Aircraft Engine control systems, it delivers reliable switching performance where environmental resilience, compact size, and mission-critical reliability are essential requirements.

Product Features & Advantages
The P3H-29 delivers exceptional performance through optimized design and rigorous manufacturing standards, offering distinct advantages for modern military and aerospace systems:
- High-Performance Component Design: Engineered specifically as a performance-optimized component rather than a general-purpose relay, with enhanced electrical and mechanical characteristics.
- Drone-Optimized PCB Integration: Footprint and pin configuration specifically designed for efficient PCB layout in compact drone and UAV electronics packages.
- Advanced Hermetic Sealing Technology: Military-grade metal-can sealing provides complete environmental protection against moisture, dust, and contaminants encountered in outdoor and high-altitude operations.
- Enhanced Vibration & Shock Resistance: Specifically engineered to withstand the vibration profiles of multi-rotor drones, fixed-wing aircraft, and military vehicle applications.
- Weight-Optimized Construction: At under 3 grams, minimizes impact on critical weight budgets in drone and aerospace applications.
- High-Speed Switching Performance: Fast action/release times (≤4ms) enable precise control of time-sensitive systems.
- Dual Load Capability: Reliably handles both power switching (1A at 28V DC) and sensitive signal circuits (10-50µA at 10-50mV) within integrated systems.
This relay complements YM's comprehensive range of Military Electromagnetic Relay solutions, manufactured to the same exacting standards as our specialized Aviation Latching Relay and Sealed magnetic Latching Relay product families.
Technical Specifications
Complete performance parameters for engineering evaluation and system integration:
Electrical Specifications
- Coil Voltage: Standard military/aviation voltage (typically 27V DC, verify specific variant)
- Contact Configuration: P3H series compatible configuration
- Contact Rating:
- Standard Power Load: 1A at 28V DC (minimum 100,000 cycles)
- Low-Level Signal: 10-50 µA at 10-50 mV
- Coil Power Consumption: 0.3W to 0.43W
- Contact Resistance:
- Initial Value: ≤ 50 mΩ
- After Life Testing: ≤ 200 mΩ
Performance Characteristics
- Switching Speed:
- Action Time: ≤ 4 milliseconds
- Release Time: ≤ 4 milliseconds
- Operational Life: Minimum 100,000 cycles at rated load
- Dielectric Strength:
- Normal Conditions: 500 Vr.m.s., 50Hz
- High Altitude/Low Pressure: 250 Vr.m.s., 50Hz
- Insulation Resistance: > 500 MΩ (initial measurement)
Physical & Environmental Specifications
- Sealing Performance: Leakage Rate ≤ 1.0 × 10⁻³ Pa·cm³/s
- Weight: < 3 grams
- Operating Temperature Range: -65°C to +125°C (standard military grade)
- Package Type: Compact metal enclosure optimized for PCB mounting
Drone & Aviation System Integration
For optimal performance in drone and Aviation Applications, follow these implementation steps:
- System Requirements Analysis: Evaluate power requirements, switching frequency, and environmental conditions specific to your drone or aviation application.
- PCB Layout Optimization: Design PCB with appropriate trace widths, thermal management, and component placement for the P3H-29's footprint.
- EMI/EMC Considerations: Implement proper grounding, shielding, and layout techniques to minimize electromagnetic interference in sensitive drone systems.
- Thermal Management Planning: Account for heat dissipation in enclosed drone compartments or avionics bays.
- Vibration Analysis: Ensure mounting and support structures accommodate the specific vibration profiles of your application.
- Comprehensive Testing: Develop testing protocols that simulate actual operating conditions including temperature cycles, vibration, and altitude variations.
Application Scenarios
The P3H-29 is specifically designed for these critical military and aerospace applications:
- Military & Commercial Drones: Power distribution systems, payload control (cameras/sensors), flight controller interfaces, and communication system switching in UAVs.
- Aircraft Avionics Systems: Aircraft Engine monitoring and control circuits, flight instrumentation, and cockpit system interfaces.
- Military Communications Equipment: Switching functions in secure communication systems, radar interfaces, and electronic countermeasure equipment.
- Unmanned Ground Vehicles: Electronic systems in military UGVs and robotic platforms requiring reliable switching in harsh environments.
- Legacy System Modernization: Replacement and upgrade component in existing Russian/Soviet-era military equipment requiring P3H series compatibility.
- High-Reliability Industrial Drones: Inspection, surveying, and industrial drone applications where reliability exceeds standard commercial requirements.
Value for Drone & Aviation Manufacturers
The P3H-29 delivers specific advantages to drone and aerospace system integrators:
- Enhanced System Reliability: Military-grade construction reduces in-flight failures and maintenance requirements in critical applications.
- Weight Optimization: Lightweight design preserves valuable payload capacity in drone applications.
- Environmental Durability: Withstands the temperature variations, moisture, and vibration encountered in drone and aviation operations.
- Design Flexibility: PCB-mount design facilitates integration into compact drone and avionics electronics.
- Supply Chain Security: Reliable manufacturing source for critical components in drone and military systems.
- Certification Support: Documentation and performance data to support drone and aviation system certification processes.
Certifications & Compliance
The P3H-29 meets relevant standards for military, drone, and aerospace applications:
- Performance equivalent to original P3H series specifications with modern manufacturing enhancements
- Materials compliance with RoHS environmental directives
- Manufacturing processes suitable for aerospace and defense applications
- Compatibility with drone industry qualification and testing requirements
- Traceability and documentation supporting system certification processes
- Testing validation for specific drone and aviation environmental conditions
Customization for Specific Applications
YM offers specialized customization capabilities for drone and aviation programs:
- Voltage Variants: Custom coil voltages matching specific drone or aircraft power system architectures
- Pin Configuration Optimization: Adjusted layouts for specific PCB designs and space constraints
- Environmental Performance Enhancements: Special sealing for waterproof or extreme environment applications
- Weight Reduction Options: Material and design optimizations for maximum weight savings in drone applications
- Application-Specific Testing: Custom testing protocols simulating specific drone flight profiles or aviation conditions
- Qualification Support Packages: Tailored documentation for specific drone or aviation certification requirements
Production Process & Quality Assurance
Each P3H-29 relay undergoes specialized manufacturing processes for high-performance applications:
- High-Performance Material Selection: Components selected for optimal electrical, mechanical, and weight characteristics.
- Precision Manufacturing: Automated processes ensuring consistency in high-performance component production.
- Cleanroom Assembly: Assembly in controlled environments to prevent contamination of critical contact surfaces.
- Advanced Sealing Techniques: Hermetic sealing methods providing environmental protection for drone and aviation applications.
- Rigorous Performance Testing: Comprehensive electrical, environmental, and life testing validating suitability for high-performance applications.
- Final Quality Verification: Complete inspection and performance validation before release.
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Comparative Advantages
The P3H-29 offers specific benefits over alternative solutions:
- vs. Standard PCB Board Relay: Superior environmental protection and vibration resistance for drone and aviation applications.
- vs. Automotive Relay: Weight-optimized design unlike heavier automotive components, with aviation-grade reliability.
- Lower conduction losses and true galvanic isolation advantages for power distribution applications.
- vs. General Industrial Power Relay: Specific optimization for weight-sensitive drone and aviation applications.
- Heritage Compatibility: Maintains compatibility with existing P3H series designs while offering modern performance improvements.
Frequently Asked Questions (FAQ)
Q1: Why choose the P3H-29 for drone applications over standard commercial relays?
A: The P3H-29 offers military-grade environmental protection, enhanced vibration resistance, and weight optimization specifically designed for drone operating conditions. Standard commercial relays lack these specialized features and may fail in demanding drone applications.
Q2: How does this relay handle the rapid temperature changes in high-altitude drone operations?
A: The P3H-29 is designed for the -65°C to +125°C temperature range, accommodating the temperature variations encountered in high-altitude drone flights. Its hermetic sealing prevents internal condensation during rapid temperature changes.
Q3: Can the P3H-29 be used in both military and commercial drone systems?
A: Yes, the P3H-29 is suitable for both military and high-end commercial drone applications where reliability and environmental performance are critical. Its military-grade construction provides enhanced reliability for demanding commercial applications like industrial inspection, delivery, or long-endurance surveillance drones.
Q4: What makes this a "high-performance component" compared to standard relays?
A: The P3H-29 is engineered with enhanced materials, tighter performance tolerances, and specialized design features optimized for critical applications. It undergoes more rigorous testing and validation compared to standard commercial relays.
Q5: Do you provide vibration testing data specific to drone applications?
A: Yes, we provide test reports covering vibration profiles typical of multi-rotor and fixed-wing drone platforms, as well as shock testing data relevant to drone operations and transportation.
Q6: Can this relay be customized for specific drone power system voltages?
A: Absolutely. As an experienced OEM/ODM manufacturer, we can develop variants with custom coil voltages to match specific drone power system architectures, whether 12V, 24V, 27V, or other voltages commonly used in drone applications.















