Military Aviation Metal DC Relay JRC-9MT: Direct Replacement for Russian Relay P3C8 (PC4.590.052)
YM introduces the JRC-9MT, a premium Military Metal Sealing Relay engineered to meet and exceed the specifications of the legacy Russian relay P3C8 (PC4.590.052). This 28VDC, 6DPDT relay is designed for mission-critical aviation, aerospace, and military applications where reliability under extreme conditions is paramount. As a smart Metal Sealed Military Relay, it operates reliably at low pressures up to 4kPa, making it ideal for high-altitude aircraft and drone systems.
This robust Aviation Latching Relay serves as a perfect PCB Board Relay component, offering superior performance in aircraft engine control units, navigation systems, and other vital electronic assemblies that demand uncompromising quality and durability.
Key Features & Competitive Advantages
The JRC-9MT is built to outperform standard Industrial Power Relays and provide a reliable upgrade path from obsolete components.
Design and Performance Highlights
- Direct Form-Fit-Function Replacement: Seamlessly replaces Russian relay P3C8 (PC4.590.052) in existing systems, eliminating redesign efforts and simplifying logistics for military maintenance.
- Hermetic Metal Sealing: The TO-5 or equivalent metal casing ensures a complete gas-tight seal, offering ultimate protection against moisture, dust, and corrosive atmospheres, a hallmark of true Military Metal Relays.
- High-Altitude Operation: Certified for stable performance at low atmospheric pressure (4kPa), ensuring reliability in aviation and high-altitude UAV applications.
- 6PDT Configuration & 2A Rating: Provides six Form C (break-before-make) contacts rated at 2A, 28VDC, offering exceptional circuit control flexibility for complex systems.
- Long Electrical Life: Rated for 1x10^6 operations at full load, ensuring longevity and reducing total cost of ownership for critical systems.
YM's Manufacturing Excellence
Leveraging our expertise across product lines like Polarized Relay JH-2S and Solid State Relay technologies, we apply stringent quality controls to the JRC-9MT. Our production focuses on precision, consistency, and reliability that meets the demands of both traditional military aviation and modern New Energy Relay applications where robustness is key.
Technical Specifications
Electrical Characteristics
- Contact Arrangement: 6PDT (6 Form C).
- Rated Load: 2A @ 28V DC (Resistive).
- Coil Voltage: 28V DC (Standard). Custom voltages available.
- Coil Power Consumption: (0.3 ~ 0.43)W.
- Electrical Life: 1 x 10^6 operations at rated load.
- Low-Level Switching Capability: (10~50)μA, (10~50)mV for signal-level applications.
- Contact Resistance: Initial ≤50mΩ; After life test ≤200mΩ.
- Operating Time: ≤4ms (Action and Release).
Environmental & Mechanical Specifications
- Dielectric Strength: 500Vr.m.s., 50Hz (Normal Pressure); 250Vr.m.s., 50Hz (Low Pressure, e.g., 4kPa).
- Insulation Resistance: >500MΩ (normal conditions); >50MΩ (post endurance test).
- Seal Integrity (Helium Leak Rate): ≤ 1.0 x 10^-3 Pa·cm³/s.
- Weight: <3 grams.
- Construction: Hermetically Sealed Metal Case.
Integration Guidelines
For optimal performance when replacing a P3C8 relay or designing in the JRC-9MT, follow these key steps.
- Verify Compatibility: Confirm the pinout and footprint of the JRC-9MT matches your PCB layout or socket. It is designed as a direct replacement for the P3C8.
- Driver Circuit Check: Ensure your coil driver circuit delivers a stable 28V DC (or specified custom voltage) within the (0.3~0.43)W power range.
- Handling & Soldering: Use proper ESD precautions. Employ temperature-controlled soldering processes to avoid damaging the hermetic seal during PCB Board Relay assembly.
- In-Circuit Testing: After installation, perform basic functional tests to verify contact switching, measure initial contact resistance, and check insulation.
- Environmental Sealing (System-Level): While the relay itself is sealed, ensure the final assembly provides adequate protection for connectors and PCB traces if exposed to harsh conditions.
Application Scenarios & Value Proposition
The JRC-9MT is deployed in systems where failure is not an option. Its primary value lies in ensuring continuity and reliability.
Primary Use Cases
- Legacy Military & Aviation System Sustainment: Direct upgrade for Russian-origin P3C8 relays in aircraft control panels, communication gear, and ground support equipment, solving obsolescence issues.
- Modern UAV/Drone Avionics: Power distribution, flight control surface actuation, and sensor switching in military and high-end commercial drones operating at varying altitudes.
- Aircraft Engine & Fuel Management Systems: Reliable switching within Engine Control Units (ECUs) and fuel pump controls, where vibration and temperature extremes are common.
- High-Reliability Industrial Control: Suitable for safety-critical systems in rail, marine, and energy sectors that require performance similar to an Intermediate Power Relay with military-grade ruggedness.
Benefits for Procurement & Engineering Teams
- Reduce Supply Chain Risk: Move away from single-source or obsolete components (P3C8) to a reliable, audited supply from YM.
- Lower Lifecycle Costs: High reliability and long electrical life minimize maintenance intervals, spare part inventories, and system downtime.
- Simplify Compliance: Our relays are manufactured under strict quality systems, aiding in your overall system certification processes.
- Design Future-Proofing: Gain access to manufacturer support and potential customization options not available for legacy parts.
Quality Assurance & Production
Every JRC-9MT relay is a product of YM's rigorous manufacturing discipline, applied across our range from Automotive Relays to specialized Sealed magnetic Latching Relays.
Our Commitment to Reliability
- Full Traceability: Critical components and production batches are fully traceable throughout the manufacturing process.
- 100% Electrical Testing: Each relay undergoes final testing for all key parameters: contact resistance, operate/release voltage and time, insulation resistance, and dielectric strength.
- Seal Verification: Batch-level helium mass spectrometer leak testing is conducted to validate the hermetic seal integrity, crucial for a Military Metal Sealing Relay.
- Environmental Stress Screening (ESS): Production samples undergo vibration, thermal cycling, and life testing to ensure performance under simulated operational stresses.
Frequently Asked Questions
Q1: Is the JRC-9MT an exact drop-in replacement for the Russian P3C8 (PC4.590.052) relay?
A1: Yes. The JRC-9MT is engineered to be a form, fit, and functional equivalent to the P3C8 relay. This includes matching physical dimensions, pinout configuration, and key electrical specifications, allowing for direct replacement without board modification.
Q2: What does "hermetic metal sealing" mean and why is it important?
A2: Hermetic sealing involves creating a permanent, gas-tight barrier (using a metal casing and glass-to-metal feedthroughs) around the relay's internal mechanism. This prevents the ingress of oxygen, moisture, and contaminants, which is critical for preventing contact oxidation and ensuring stable performance over decades, especially in aviation and military environments.
Q3: Can this relay handle both power switching (2A) and low-level signal circuits?
A3: Absolutely. The JRC-9MT is uniquely qualified as both a power switching component and a precision PCB Signal Relay. It is specifically tested and rated for reliable switching of very low currents and voltages (down to micro-amps and milli-volts), making it versatile for mixed-signal control boards.
Q4: Are customization options available for the JRC-9MT, such as different coil voltages or pin lengths?
A4: Yes. While the JRC-9MT is offered as a standard replacement part, YM provides extensive OEM/ODM services. We can discuss modifications like alternative coil voltages, special pin coatings or lengths, or tailored testing protocols to meet your specific project requirements, just as we do for our DPDT 8Pin 27V Relay and other product lines.
Q5: How does the quality and warranty of your JRC-9MT compare to the original P3C8 or other substitutes?
A5: YM manufactures the JRC-9MT under a modern quality management system with advanced process controls, often surpassing the original manufacturing standards. We back our products with a robust warranty and provide full technical support, offering a more reliable and supportable solution compared to NOS (New Old Stock) or uncertified alternatives.
Contact Now