Military Aviation DC Relay 4JGXM-3 II 28B

Product Overview

The Military Metal 27V Relay 4JGXM-3 II 28B is a high-reliability, sealed Military Electromagnetic Relay engineered for critical aviation and military applications. Designed to operate in demanding environments, this precision Military Metal Relay offers exceptional performance for drone flight control systems, aircraft engine PCB boards, and other mission-critical electronic assemblies. Its robust metal housing and advanced sealing technology ensure long-term stability and resistance to extreme conditions.

As a core component of YM's Military Metal Sealing Relay series, this model exemplifies our commitment to producing components that meet the stringent demands of defense and aerospace industries worldwide.

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Product Features & Advantages

• Military-Grade Metal Housing: Provides superior electromagnetic shielding, mechanical strength, and durability against vibration and shock common in aviation and drone operations.
• High-Precision Sealing: Features a leak rate of ≤10^-3 Pa·cm³/s, protecting internal contacts from moisture, dust, and corrosive atmospheres, ensuring consistent performance as a reliable Sealed Magnetic Latching Relay alternative for critical circuits.
• Ultra-Fast Switching: With an action time of ≤3ms and release time of ≤4ms, it guarantees rapid response for flight control systems and safety-critical PCB Board Relay applications.
• Extended Operational Life: Engineered for high reliability over 1x10⁵ cycles at rated load (1A, 28V DC), reducing maintenance needs and total cost of ownership.
• Low Power Consumption: Coil power consumption between 0.3W and 0.43W enhances energy efficiency, suitable for power-sensitive applications like UAVs and portable military equipment.
• Wide Application Compatibility: While ideal for aviation, its robust design also makes it suitable for demanding Industrial Power Relay and New Energy Relay scenarios.

Technical Specifications

Electrical Parameters

• Coil Voltage (V_DC): 27V (Standard). Other voltages within the Aviation DC Relay range available.
• Coil Power Consumption: (0.3 ~ 0.43) W.
• Contact Configuration: DPDT (Double Pole Double Throw).
• Contact Rating (Resistive): 1A at 28V DC.
• Contact Life: 100,000 cycles minimum at rated load.
• Initial Contact Resistance: ≤ 50 mΩ.
• Max Contact Resistance After Life Test: ≤ 200 mΩ.

Performance & Environmental

• Action Time: ≤ 3ms.
• Release Time: ≤ 4ms.
• Incentive Pulse Width: (10 ~ 50) ms.
• Dielectric Strength: 500Vr.m.s., 50Hz at normal atmosphere; 250Vr.m.s., 50Hz at low pressure.
• Insulation Resistance: >500 MΩ at normal atmosphere; >50 MΩ after high-level life test.
• Sealing (Leakage Rate): ≤ 10^-3 Pa·cm³/s.
• Weight: < 3g.

How to Integrate This Relay into Your System

1. Circuit Design Review: Verify your PCB layout accommodates the 8-pin DPDT footprint of this DPDT 8Pin 27V Relay. Ensure trace width is sufficient for the current rating.
2. Coil Driver Circuit Sizing: Design the driver transistor or IC to handle the coil's inrush current, referencing the specified coil power consumption.
3. Soldering Process: Use controlled soldering techniques (e.g., reflow or wave soldering) suitable for military-grade components to avoid thermal stress on the sealed metal housing.
4. Post-Assembly Inspection: Conduct electrical tests to verify contact resistance (<50mΩ) and operational timing (≤4ms) meet your application's threshold.
5. Environmental Sealing Check: For applications exposed to extreme conditions, consider supplementary conformal coating, though the relay itself is hermetically sealed.

Application Scenarios

This relay is designed for reliability-first applications where failure is not an option:

• Drone & UAV Avionics: Flight controller PCB boards, propulsion system control, and payload switching.
• Military Aviation: Aircraft engine monitoring systems, navigation equipment, and communication device power management.
• Ground Support & Vehicle Electronics: Engine control units (ECUs) in military vehicles, similar in robustness to high-end Automotive Relays but for more extreme conditions.
• Critical Industrial Controls: Safety shut-off systems, power distribution in harsh environments where it functions as an Intermediate Power Relay.
• Test & Measurement Equipment: High-reliability signal routing in military and aerospace test benches.
• Military Aviation DC Relay 4JGXM-3 II 28B
• Military Metal 27V Relay for Aviation Applications 4JGXM-3 II 28B
• Aviation DC Relay 4JGXM-3 II 28B for Military Aviation Use
• Precision Military Metal Relay 4JGXM-3 II 28B for Drone PCB Board

Value for Procurement Teams: Integrating the 4JGXM-3 II 28B reduces long-term lifecycle costs through higher mean time between failures (MTBF), minimizes system downtime, and simplifies logistics by using a single, highly reliable component across multiple platforms (drones, vehicles, instruments).

Certifications & Compliance

This product is manufactured in facilities adhering to stringent quality management systems. It is designed to meet or exceed relevant performance criteria for military and aviation components. While specific model certifications can be provided upon request, our production follows standards applicable to high-reliability Solid State Relay and electromechanical counterparts.

Customization Options

YM understands that standard solutions may not fit every unique application. We offer tailored solutions for volume orders:

• Coil Voltage: Custom voltages beyond the standard 27V DC.
• Termination Style: Variations in pin length, shape, or the addition of mounting brackets.
• Testing & Screening: Additional 100% testing for specific parameters like pull-in voltage, dropout voltage, or extended life cycling.
• Labeling & Marking: Custom part number or client logo laser marking on the metal casing.

Contact our engineering team to discuss how this Aviation Latching Relay or other PCB Signal Relay designs can be adapted for your project.

Production & Quality Process

Every 4JGXM-3 II 28B relay undergoes a multi-stage manufacturing and quality assurance process:

1. Precision Stamping & Forming: Metal parts are crafted with high-precision tools.
2. Automated Coil Winding: Ensures consistency in electrical magnetic properties.
3. Hermetic Sealing: Performed in controlled environments to guarantee the specified leakage rate.
4. 100% Electrical Testing: Each unit is tested for contact resistance, operate/release time, coil parameters, and dielectric strength.
5. Batch Sampling for Life Test: Regular production batches undergo accelerated life cycling to validate longevity specifications.
6. Final Inspection & Packaging: Anti-static, sealed packaging suitable for long-term storage and transportation.

Frequently Asked Questions (FAQ)

• Q: What makes this a "Military Grade" relay?

  A: It meets several de-facto military-grade criteria: metal hermetic sealing for environmental protection, extended operational temperature range, high vibration/shock resistance, and consistent performance over a long lifespan under rated load—key for true Military Metal Relays.

• Q: Can this relay be used as a direct replacement for a Polarized Relay JH-2S in existing designs?

  A: Not directly without design review. The 4JGXM-3 II 28B is a non-polarized, DPDT relay. Pinout, coil voltage, and switching characteristics must be compared with your existing JH-2S specification. Our engineers can assist with compatibility analysis.

• Q: How does the sealing compare to epoxy-filled relays?

  A: Metal-to-glass or metal-to-ceramic hermetic sealing (used here) is superior for preventing gas and moisture permeation over long periods compared to epoxy resin. It offers better stability in thermal cycling, making it ideal for aviation.

• Q: Is this relay suitable for high-altitude drone operations?

  A: Yes. The specified dielectric strength at low pressure (250Vr.m.s.) and the hermetic seal make it specifically suitable for the low-pressure environments encountered at high altitudes.

• Q: What is the typical lead time for volume orders?

  A: For standard 27V models, typical lead time is 6-8 weeks for container quantities. Customized versions may require additional time for tooling and verification.