Military Metal Relay JRW-231MA TO-5

Product Overview

The JRW-231MA TO-5 is a high-reliability, metal-hermetically-sealed Military Electromagnetic Relay designed for the most demanding aerospace and defense applications. This 27V DC Aviation DC Relay serves as a direct and superior replacement for legacy relays such as the Teledyne 432D series and Deutsch TVS series, offering enhanced performance and durability in critical circuits.

Engineered for extreme environments, this relay is a quintessential component for systems requiring fail-safe operation, making it an ideal Military Metal Relay for UAVs, aircraft engine controls, flight systems, and other mission-critical Aviation Electronics.

Metal Sealed Military Relay JRW-231MA  TO-5

Military Aviation Metal DC Relay JRW-231MA TO-5 Replace 432D Teledyne

Military Metal 27V  Relay JRW-231MA TO-5 Replace of Relay Deutsch TVS Series For Aviation Use

Military Relay JRW-231MA TO 5 Replace of   Teledyne  432D Series 

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Product Images

Technical Specifications

• Contact Configuration: DPDT (Double Pole Double Throw)
• Coil Voltage: 27V DC (Standard Military & Aviation Grade)
• Coil Power Consumption: 0.3W - 0.43W
• Contact Rating (Resistive): 1A @ 28V DC
• Electrical Life: 1 x 10^6 operations at rated load
• Low Level Life: 1 x 10^6 operations at (10-50)µA, (10-50)mV
• Initial Contact Resistance: ≤ 50 mΩ
• Post-Life Contact Resistance: ≤ 200 mΩ
• Operate / Release Time: ≤ 4ms
• Dielectric Strength:
  • Atmosphere: 500 Vr.m.s., 50Hz
  • Low Pressure: 250 Vr.m.s., 50Hz
• Insulation Resistance: >500 MΩ (Initial); >50 MΩ (Post Life Test)
• Sealing (Helium Leak Rate): ≤ 1 x 10^-3 Pa·cm³/s
• Weight: < 3 grams
• Package: TO-5 Metal Can

Product Features & Advantages

1. Superior Hermetic Sealing: The Metal Sealed Military Relay construction ensures complete protection against moisture, dust, and corrosive atmospheres, guaranteeing long-term stability and reliability.
2. High Reliability for Critical Systems: Designed to meet rigorous military standards (MIL-SPEC), it offers unmatched performance in extreme temperature and vibration conditions common in aviation use.
3. Direct Replacement & Drop-In Compatibility: Perfectly replaces obsolete Teledyne 432D and Deutsch TVS series relays, facilitating easy system upgrades without redesign.
4. Ultra-Fast Switching: With operate/release times under 4ms, it ensures rapid response in control and signal switching circuits, a key feature for modern PCB Board Relay applications in compact avionics.
5. Low Power Consumption & High Sensitivity: Optimized coil design provides reliable actuation with minimal power draw, conserving energy in battery-powered systems like drones.
6. Robust Construction: The rugged TO-5 metal package and internal design make it more durable than standard plastic Automotive Relay or commercial-grade units.

How to Integrate the JRW-231MA Relay

Follow these steps for optimal integration into your system:

1. Circuit Verification: Confirm your driver circuit provides a stable 27V DC (±10%) to the coil terminals.
2. PCB Layout: Adhere to the TO-5 pinout. For high-density boards, consider our PCB Signal Relay series for similar performance in different form factors.
3. Soldering: Use recommended temperature profiles for metal-can packages to avoid thermal stress.
4. Testing: Perform in-circuit functional tests, verifying switching times and contact resistance against the specifications.
5. Environmental Sealing: While the relay itself is sealed, ensure board-level conformal coating does not interfere with the relay's vent (if present) or casing.

Application Scenarios

The JRW-231MA is the cornerstone of reliability in these demanding fields:

• Unmanned Aerial Vehicles (UAVs/Drone): Engine management, flight control surface actuation, and payload switching.
• Manned Aircraft & Avionics: Navigation system backups, sensor circuit switching, and auxiliary power control.
• Military & Defense Systems: Communication equipment, radar modules, and weapon system controls where a Military Electromagnetic Relay is mandated.
• High-Reliability Industrial: Test & measurement equipment, safety shutdown systems, and robotics where failure is not an option.
• Ground Support Equipment: Power routing and system diagnostics for aircraft and vehicle maintenance.

For less extreme environments, our Industrial Power Relay or New Energy Relay lines may offer cost-effective solutions.

Certifications & Compliance

This relay is manufactured and tested in accordance with stringent quality processes aligned with relevant military and aerospace performance standards. While specific certification marks may vary by batch, our production consistently targets compliance with the performance criteria of MIL-R-39016 and other applicable specifications for high-reliability components.

Customization Options

YM specializes in providing tailored relay solutions. Based on the proven JRW platform, we offer:

• Coil Voltage Customization: Other standard voltages (e.g., 12V, 24V, 48V DC) available.
• Contact Material & Plating: Options for gold-plated contacts for low-level signal switching.
• Lead Forming & Termination: Custom pin bending or wire leads to suit your assembly process.
• Testing & Screening: Additional 100% testing, burn-in, or lot traceability to meet specific project requirements.

For unique latching needs, inquire about our Sealed magnetic Latching Relay or Polarized Relay JH-2S designs.

Production & Quality Process

Every JRW-231MA relay undergoes a rigorous production cycle:
1. Component Sourcing & Inspection: Military-grade materials only.
2. Automated Assembly: Precision assembly in a controlled environment.
3. Hermetic Sealing: Laser welding in a dry atmosphere.
4. 100% Electrical Testing: Every unit tested for all key parameters (pull-in voltage, dropout voltage, contact resistance, insulation, timing).
5. Batch Sampling for Life & Environmental Tests: Regular rigorous qualification tests simulate years of operation.
This process ensures that every relay, from our standard DPDT 8Pin 27V Relay to custom Intermediate Power Relay solutions, delivers consistent, reliable performance.