AN34-K Military Aviation Switch:
High-Performance Switching for Aerospace & Drone Systems
The AN34-K Military Aviation Switch is a precision-engineered electromagnetic switch designed for critical applications in drones, aircraft engines, and high-reliability aviation systems. As part of YM's specialized lineup of Military Metal Relays and aviation components, it delivers exceptional performance under extreme conditions. Built to stringent quality standards, this switch ensures reliable operation in environments where failure is not an option, making it the ideal choice for integration into sophisticated Military Aviation Encoding Switch systems and engine control units.
Its core design focuses on low power consumption, fast response times, and robust sealing—characteristics that align with the demanding requirements of modern aerospace engineering and complementary to our range of Aviation Pressure Sensors and Hydraulic Circuit Breakers.
Technical Specifications
Electrical Characteristics
- Coil Power Consumption: (0.3 ~ 0.43)W – Optimized for low-energy systems.
- Contact Load & Mechanical Life:
- Resistive Load: 1A at 28V DC for 100,000 cycles.
- Low-Level Signal Load: (10~50)μA, (10~50)mV for 100,000 cycles (ideal for sensor circuits).
- Contact Resistance:
- Initial: ≤ 50mΩ
- After Life Test: ≤ 200mΩ
- Timing Parameters:
- Action Time: ≤ 4ms
- Release Time: ≤ 4ms
- Incentive Pulse Width: (10～50) ms
Isolation & Physical Properties
- Dielectric Strength (Withstand Voltage):
- At Normal Atmospheric Pressure: 500V RMS, 50Hz
- At Low Pressure: 250V RMS, 50Hz (simulated high-altitude conditions)
- Insulation Resistance:
- Initial: > 500 MΩ
- After High-Level Life Test: > 50 MΩ
- Weight: < 3 grams – Critical for weight-sensitive aerospace and drone designs.
- Sealing (Hermeticity): Leakage rate ≤ 1 x 10⁻³ Pa·cm³/s. Protects against moisture, dust, and corrosive agents.
- Operating Temperature Reference: Coil voltage specifications are referenced at 25°C (77°F).
Product Features & Advantages
- Extended Operational Life: Rated for 100,000+ cycles at full load, ensuring longevity and reducing total cost of ownership in critical systems, a standard we uphold across our Automotive Relays and Industrial Power Relays.
- Dual-Purpose Contact Design: Engineered to handle both standard power switching (1A/28VDC) and sensitive low-level signals (μA/mV range), offering design flexibility.
- Superior Sealing Technology: Hermetic sealing ensures reliable performance in harsh environments, matching the durability required for Aviation Oil Sealed Valves and other sealed components.
- Rapid Switching Speed: Sub-4ms response time enhances system performance in fast-paced control loops.
- High Reliability Under Pressure: Maintains dielectric strength even at low atmospheric pressures, a key consideration for high-altitude aircraft and UAV operations.
- Compact & Lightweight: Its minimal weight and footprint allow for efficient use of space in densely packed avionics bays or drone fuselages.
- Robust Construction: Built to withstand vibration and shock, reflecting YM's expertise in manufacturing Military Electronic components.
Recommended Integration Procedure
To ensure optimal performance and reliability of the AN34-K in your application, follow these integration steps:
- Specification Verification: Confirm your system's control voltage matches the coil specification, and the load current/voltage falls within the switch's rated capacity.
- Mechanical Mounting: Secure the switch using its provided mounting features. Avoid placing excessive stress on the pins or casing. Ensure adequate clearance from heat sources or other Aviation Magnetic Valves or actuators that may induce vibration.
- Electrical Connection: Use appropriate wire gauges. For low-level signal applications, implement noise-reduction practices such as shielded cabling, similar to installations for Aviation Temperature Sensors.
- System Sealing Check: If the switch is part of a larger sealed enclosure, verify the integrity of the overall system's environmental seals post-installation.
- Pre-Operational Testing: Conduct in-situ functional tests to verify switching action, measure contact resistance, and confirm timing parameters before final system commissioning.
Application Scenarios
The AN34-K is designed for mission-critical switching across diverse aerospace and defense platforms:
- Unmanned Aerial Systems (UAS/Drones): Engine management, payload articulation (e.g., camera gimbals), communication system switching, and safety cutoff functions.
- Manned & Unmanned Aircraft: Fuel pump control, ignition system circuits, auxiliary power unit (APU) control, and integration into custom Aviation Rocker Switch or Aviation Button Switch panels.
- Avionics & Instrumentation: Power distribution for navigation/comms equipment, mode selection in radar systems, and test point switching.
- Ground Support Equipment (GSE): Reliable switching in engine test stands, aircraft simulators, and maintenance diagnostics tools.
- Related High-Reliability Sectors: Suitable for applications where performance parallels that of specific Solid State Relays in low-power circuits, or within redundant safety systems often paired with components like Aviation Copper Fuse Holders.
Procurement Value Proposition: Sourcing the AN34-K from YM, a manufacturer with deep expertise in PCB Signal Relays and military components, mitigates supply chain risk, ensures consistent quality, and provides access to engineering support for complex integrations, ultimately enhancing system reliability and reducing lifecycle costs.
Certifications & Compliance
The AN34-K is produced in facilities committed to aerospace-grade manufacturing excellence. While final certification markings can be tailored to program needs, the component is designed and tested to conform to the rigorous performance benchmarks found in:
- Relevant MIL-STD specifications for environmental stress (vibration, shock, temperature).
- Industry-accepted standards for reliability testing of electromechanical components in aerospace.
- RoHS compliance is available as a standard or upon request.
Our engineering team can support necessary qualification testing documentation for your specific project requirements.
Customization Options
YM recognizes that off-the-shelf solutions may require adaptation. We offer flexible customization for the AN34-K platform to meet unique application demands:
- Electrical Tailoring: Specific coil voltages (Vdc) outside standard offerings.
- Termination & Connectorization: Custom lead lengths, wire types, or integration with specific Military Aviation Connectors or sockets.
- Mechanical Modifications: Alternate mounting bracket designs or orientation.
- Testing & Screening: Additional batch-level testing, burn-in cycles, or provision of test data reports.
- Marking & Traceability: Custom part numbering, date codes, or client logos for full traceability.
Production & Quality Assurance Process
Every AN34-K switch is manufactured under a controlled process that ensures repeatable high quality:
- Component Sourcing & Inspection: High-grade materials and sub-components are sourced and inspected to meet aerospace tolerances.
- Precision Assembly: Automated and manual assembly in a clean, controlled environment to ensure consistency.
- Hermetic Sealing & Leak Test: The sealing process is followed by mandatory leak testing to validate the specified leakage rate.
- 100% Electrical Testing: Each unit undergoes tests for operate/release time, coil resistance, contact resistance, pull-in/drop-out voltage, and dielectric strength.
- Quality Audit & Packaging: Final visual inspection and secure, anti-static packaging to prevent damage during shipping. This rigorous approach is standard across our production, whether for the AN34-K or complex New Energy Relays.
Frequently Asked Questions (FAQ)
Q1: How does the AN34-K differ from a standard commercial relay?
A1: The AN34-K is built to military-grade expectations for environment (vibration, temperature, pressure), longevity (100k cycles), and reliability. Its hermetic seal and performance derating for low-pressure environments are typical differentiators not found in commercial parts.
Q2: What is the significance of the low-level signal rating (μA/mV)?
A2: This rating indicates the switch can reliably make and break very weak signals without introducing significant contact noise or resistance variance. This is crucial for switching sensor outputs or signal paths in avionics without degradation, similar to requirements in precision PCB Board Relay applications.
Q3: Can the AN34-K operate in high-vibration environments?
A3: Yes. Its design incorporates features to resist vibration-induced contact chatter or mechanical failure, making it suitable for mounting on engines, actuators, or within moving platforms like drones.
Q4: Is the "<3g" weight a typical value or a maximum?
A4: This represents a maximum weight specification. Actual weight is typically slightly lower, contributing directly to the weight-saving goals essential in aerospace design.
Q5: Do you support small-quantity orders for prototyping?
A5: Yes. We encourage and support prototyping phases. We can provide evaluation samples and small batch orders to facilitate your design validation and testing process.
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