High Performance Military Metal Relay REC-29C 27V for Aviation Application
Product Overview
The REC-29C 27V is a premium Military Aviation Metal Sealed DC Relay engineered for the most demanding aerospace and defense applications. As part of our advanced Military Metal Sealing Relay series, this component combines hermetic environmental protection with exceptional electrical performance for critical systems. Designed specifically for Aircraft Engine controls, drone flight systems, and military avionics, the REC-29C delivers reliable switching performance where component failure is not an option.

Product Features & Advantages
The REC-29C represents the cutting edge of military-grade switching technology, offering significant advantages over standard commercial relays such as PCB Board Relays and Automotive Relays:
- Advanced Hermetic Sealing: Laser-welded metal enclosure provides complete protection against moisture, dust, salt spray, and chemical contaminants, ensuring reliable operation in extreme environmental conditions.
- Military-Grade Environmental Resilience: Engineered to withstand severe vibration (30G+), mechanical shock, and extreme temperature ranges from -65°C to +125°C, exceeding commercial aviation requirements.
- High-Speed Switching Performance: Fast action time (≤4ms) and release time (≤4ms) ensure precise control for time-critical aerospace applications.
- Dual-Mode Contact System: Capable of handling both standard power loads (1A at 28V DC) and sensitive low-level signal circuits (10-50µA at 10-50mV) with equal reliability.
- Optimized Power Efficiency: Low coil power consumption (0.3-0.43W) reduces thermal load and minimizes system power requirements.
- Lightweight Compact Design: Weight under 3 grams with space-efficient packaging ideal for modern avionics where weight and space constraints are critical.
- Enhanced Reliability: Contact resistance remains stable (≤200mΩ after life testing) through extended operational cycles, ensuring long-term performance consistency.
As part of YM's comprehensive Military Electromagnetic Relay portfolio, the REC-29C shares manufacturing excellence with our Aviation Latching Relay and Sealed magnetic Latching Relay product lines.
Technical Specifications
Complete performance parameters for engineering evaluation and system integration:
Electrical Characteristics
- Rated Coil Voltage: 27V DC (Standard military/aviation voltage)
- Contact Configuration: SPST-NO (Single Pole Single Throw Normally Open)
- Contact Rating:
- Standard Resistive Load: 1A at 28V DC (100,000 cycles minimum)
- Low-Level Signal Load: 10-50 µA at 10-50 mV
- Coil Power Consumption: 0.3W to 0.43W
- Contact Resistance:
- Initial: ≤ 50 mΩ
- After Life Test: ≤ 200 mΩ
- Insulation Resistance: > 500 MΩ (initial, normal atmospheric conditions)
Performance Parameters
- Switching Speed:
- Action Time: ≤ 4 milliseconds
- Release Time: ≤ 4 milliseconds
- Operational Life: Minimum 100,000 cycles at rated load
- Dielectric Strength:
- Normal Atmosphere: 500 Vr.m.s., 50Hz
- Low Pressure Conditions: 250 Vr.m.s., 50Hz
- Incentive Pulse Width: 10 to 50 milliseconds
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
- Package Type: Military-grade metal enclosure
System Integration Guidelines
For optimal performance in aviation and military systems, follow these implementation steps:
- Application Analysis: Verify relay specifications match your specific load requirements and environmental conditions.
- Circuit Design Review: Design coil drive circuits with proper protection (flyback diode/TVS) and ensure adequate current capacity.
- PCB Layout Considerations: Design with appropriate clearance and creepage distances for high-reliability applications.
- Thermal Management: Plan for adequate heat dissipation, especially when operating near maximum ratings in elevated temperatures.
- Handling Procedures: Implement ESD protection and proper handling techniques during assembly.
- System Testing: Test under simulated operational conditions before final deployment.
Application Scenarios
The REC-29C is specifically designed for mission-critical applications across multiple domains:
- Military Aviation Systems: Flight control interfaces, navigation system switching, cockpit instrumentation, and weapon system controls.
- Unmanned Aerial Systems (UAS): Drone power distribution, payload activation (sensors/cameras), flight control systems, and communication modules.
- Aircraft Engine Management: Engine control units, fuel system controls, ignition systems, and monitoring equipment.
- Military Communications: Encrypted communication equipment, radar system interfaces, and electronic warfare systems.
- High-Reliability Industrial: Critical industrial applications requiring military-grade reliability, distinct from our standard Industrial Power Relay offerings.
Value Proposition
The REC-29C delivers significant strategic value to aerospace and defense organizations:
- Enhanced Mission Reliability: Reduces system failures through proven military-grade construction and testing.
- Reduced Lifecycle Costs: Extended operational life and reduced maintenance requirements lower total ownership costs.
- Improved System Performance: Enhanced switching characteristics contribute to overall system responsiveness and accuracy.
- Simplified Certification: Pre-qualified to military standards reduces time and cost for system certification processes.
- Supply Chain Security: Reliable supply from established manufacturer reduces procurement risks.
Certifications & Compliance
The REC-29C is designed and manufactured to meet rigorous international standards:
- Performance compliant with relevant sections of MIL-PRF-6106 for established reliability electromagnetic relays
- Environmental testing per MIL-STD-810 methods for vibration, shock, and temperature extremes
- Materials compliance with RoHS and REACH environmental directives
- Manufactured under quality management systems suitable for aerospace applications
- Compatibility with aviation industry qualification requirements
Customization Options
YM offers comprehensive customization for specific program requirements:
- Voltage Variants: Custom coil voltages tailored to specific system requirements
- Contact Configurations: Modified contact arrangements for specific switching needs
- Enhanced Testing: Additional screening including burn-in, thermal cycling, or accelerated life testing
- Special Marking: Custom part numbering, date coding, and traceability features
- Environmental Enhancements: Special sealing or materials for specific environmental challenges
Production Process & Quality Assurance
Each REC-29C relay undergoes a rigorous manufacturing and testing regimen:
- Material Qualification: All materials sourced from qualified suppliers with full traceability
- Precision Manufacturing: Components manufactured to exacting tolerances using automated processes
- Controlled Assembly: Assembly in cleanroom conditions to prevent contamination
- Hermetic Sealing: Advanced laser welding techniques ensure specified environmental protection
- Comprehensive Testing: 100% electrical testing plus environmental validation on sample lots
- Final Verification: Complete inspection and quality verification before release
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Competitive Advantages
The REC-29C offers distinct advantages over alternative solutions:
- Superior to Standard Relays: Outperforms commercial PCB Signal Relays in environmental durability and reliability
- Enhanced vs Automotive Grade: Exceeds specifications of even high-grade Automotive Relays for aerospace applications
- Complementary to Solid State: While Solid State Relays offer different advantages, the REC-29C provides superior galvanic isolation and surge tolerance
- Manufacturing Excellence: YM's vertical manufacturing integration ensures consistent quality and performance
Frequently Asked Questions (FAQ)
Q1: What makes the REC-29C suitable for Aviation Applications?
A: The REC-29C combines hermetic sealing for high-altitude/low-pressure environments, military-grade vibration resistance, and extended temperature range operation—all critical for aviation systems. Its reliability has been validated through rigorous testing protocols.
Q2: Can this relay be used as a replacement for specific Russian relay series?
A: While the REC-29C is designed to our specifications, YM has extensive experience with replacement solutions for legacy systems. Please consult our technical team with specific replacement requirements, as we offer dedicated replacement products like our Russian relay replacement series.
Q3: How does the REC-29C compare to a Solid State Relay for drone applications?
A: The REC-29C offers advantages in high-current applications with lower conduction losses and inherent resistance to electromagnetic interference. Solid State Relays excel in high-speed switching and long life for frequent cycling. The optimal choice depends on specific application requirements—we offer both technologies.
Q4: What documentation is available for qualification processes?
A: We provide comprehensive technical data packages including specifications, test reports, material certifications, and reliability data to support customer qualification processes for military and aerospace applications.
Q5: What is the typical lead time for aviation-grade quantities?
A: Standard production lead times are 10-16 weeks for aviation-grade components, accounting for the rigorous testing and documentation requirements. Expedited options may be available for urgent requirements.
Q6: Do you offer engineering support for system integration?
A: Yes, our technical engineering team provides application support for integrating the REC-29C into specific systems, including circuit design review and compatibility analysis.















