Product Attributes

Model No.: JRC-201MA

Brand: YM

Output: Dc

Relay Type: Telecom

Ambient Temperature: L grade: -55℃~85℃; H grade: -65℃~125℃

Relativehumidity: 98% at 40℃

Cyclone: 1kPa

Sinusoidalvibration: 15g,(10～2000)Hz

Random Vibration: 0.2g²/Hz,169.1m/s²

Coil Powerconsumption: Power consumption: ≤0.69W

Dielectricwithstandvoltage: Normal atmospheric pressure:750/500Vr.m.s., 50HzUnder low pressure: 250Vr.m. s .,50 Hz

Contact Load Andlife: Resistance, 2A,28 Vd.c., 5×10⁴ timesResistance, 1A,28 Vd.c., 1×10⁵ times Resistance, 0.5A,115 Va.c., 1×10⁵ times (unearthed housing) Low level, (10-50) μA, (10-50) mV, 1×10⁵ times

Contact Resistance: Initial value ≤50mΩLife test after ≤150mQ

Insulation Resistance: ≥ 1 0 0 0 0 MQ

Tightness: Leakage rate ≤10³ Pa · cm³/s

Military Metal Sealed Relay JRC-201MA 27V | Direct Replacement for CII 3SBC Series

YM presents the JRC-201MA 27V Military Metal Relay, a high-performance, hermetic relay engineered for mission-critical applications. Designed as a precise drop-in replacement for the CII 3SBC series, this relay meets stringent military and aviation standards. It is ideal for upgrading systems requiring unmatched reliability in extreme environments, from aviation PCBs to heavy-duty industrial controls.

Product Features & Core Advantages

Military-Grade Construction & Sealing

The Military Metal Sealing Relay features a robust, hermetically sealed metal enclosure. This ensures superior protection against moisture, dust, shock, and vibration, guaranteeing consistent performance in harsh conditions where standard PCB Board Relays would fail.

High Reliability & Long Lifespan

With a contact life exceeding 100,000 cycles at rated load (1A, 28V DC), the JRC-201MA offers exceptional durability. Its low contact resistance (≤50mΩ initial) minimizes power loss and heat generation, critical for Aviation Latching Relay and power distribution applications.

Fast Switching & Precise Timing

Engineered for rapid response, this relay boasts an action/release time of ≤4ms. This makes it suitable for precise control circuits in drones, aircraft engine management, and other applications requiring swift signal transmission, similar to high-end Solid State Relays in speed-critical functions.

Direct Replacement & Easy Integration

As a form-fit-function replacement for the legacy CII 3SBC series, the JRC-201MA simplifies maintenance and system upgrades without redesign. This DPDT 8Pin 27V Relay configuration ensures broad compatibility and easy integration into existing boards and panels.

Technical Specifications

Electrical Parameters

Coil Voltage: 27V DC
Coil Power Consumption: 0.3W ~ 0.43W
Contact Form: DPDT (Double Pole Double Throw)
Contact Rating: 1A @ 28V DC (Resistive)
Initial Contact Resistance: ≤50 mΩ
Maximum Contact Resistance (After Life Test): ≤200 mΩ

Performance & Environmental

Operate/Release Time: ≤4ms
Dielectric Strength: 500V RMS (at sea level), 250V RMS (at low pressure)
Insulation Resistance: >500 MΩ (initial), >50 MΩ (after life test)
Hermetic Seal (Leak Rate): ≤1.0 x 10⁻³ Pa·cm³/s
Weight: <3 grams
Termination: 8-Pin PCB Mount

Product Images

JRC-201MA Military Relay front view and comparison with 3SBC series

Military Metal Relay JRC-200MA size and pinout diagram

Internal structure of the sealed metal relay

JRC-201MA on PCB for aviation application

Sealed relay package and marking details

Application Scenarios

The JRC-201MA is indispensable in fields demanding absolute reliability. Our expertise in Military Metal Relay and Aviation Latching Relay manufacturing ensures performance where it matters most.

Primary Industries & Uses

Military & Aerospace: Communication systems, navigation controls, weapon systems, UAV/Drone flight controllers, and aircraft engine PCB boards.
Aviation Maintenance: Direct replacement for aging CII 3SBC relays in plane and train control system overhauls, ensuring OEM performance.
High-End Industrial: Power control in railway signaling, medical equipment, and precision instrumentation where failure is not an option.
Emerging Technology: Robust power management in New Energy Relay applications and backup systems.

How to Integrate the JRC-201MA Relay

Verification: Confirm your existing relay is part of the CII 3SBC series and the coil voltage is 27V DC.
Safety First: Ensure all power to the circuit board is disconnected before proceeding.
Removal: Desolder or unplug the old relay carefully from the PCB.
Installation: Insert the JRC-201MA, observing the correct pin orientation (match the pinout diagram).
Soldering: Solder the 8 pins securely using appropriate ESD-safe soldering techniques.
Testing: Re-apply power and test the relay function with a low-voltage signal before full operational deployment.

Certifications & Quality Assurance

YM's manufacturing processes adhere to strict military-derived quality standards. While specific certifications for this model are available upon request, our production of Industrial Power Relays and PCB Signal Relays follows rigorous internal QC protocols, including 100% electrical testing and hermeticity screening. We support compliance with relevant MIL standards.

Value for International Procurement Managers

Reduce Downtime & MRO Costs: A reliable, long-life drop-in replacement minimizes system failures and maintenance intervals.
Simplify Supply Chain: Source a critical, hard-to-find military component directly from a specialized manufacturer.
Mitigate Risk: The sealed metal construction reduces field failures due to environmental factors, protecting your end-product reputation.
Future-Proof Systems: Upgrade legacy systems with a modern, available component without redesign costs.

Customization & OEM Services

Beyond this standard model, YM offers extensive customization. As experts in Automotive Relay and Sealed magnetic Latching Relay design, we can modify parameters like coil voltage, contact material, terminal type, or branding to meet your specific OEM/ODM requirements for medium to large volume projects.