Reverse Polarity Protected Metal Relay JRW-222MA TO-5: Replacement for Teledyne 114DD with 0.5W Power
Product Overview
The JRW-222MA TO-5 is an advanced Military Metal Smart Relay featuring integrated reverse polarity protection and coil transient suppression. Engineered as a direct replacement for legacy Teledyne 114DD series components, this relay combines heritage compatibility with enhanced protection features for demanding aerospace applications. With 0.5W power rating and military-grade TO-5 construction, it provides reliable switching for Aircraft Engine controls, drone systems, and critical applications where wiring errors or voltage transients could compromise system integrity.
Product Features & Advantages
The JRW-222MA offers advanced protection features while maintaining Teledyne 114DD compatibility:
- Integrated Reverse Polarity Protection: Built-in protection against incorrect coil connection, preventing damage from wiring errors.
- Coil Transient Suppression: Internal suppression of voltage spikes and EMI, protecting both relay and control circuitry.
- Direct 114DD Series Replacement: Form-fit-function compatible with Teledyne 114DD relays.
- Military-Grade Hermetic Sealing: TO-5 metal-can sealing for superior environmental protection.
- 0.5W Power Rating: Optimized for efficient operation in power-sensitive systems.
- Enhanced Reliability: Protection features extend relay life and improve system robustness.
- Dual Load Capability: Handles power loads (1A at 28V DC) and sensitive signals (10-50µA at 10-50mV).
This smart relay complements YM's Military Electromagnetic Relay portfolio, sharing standards with our Aviation Latching Relay and Sealed magnetic Latching Relay solutions.
Technical Specifications
Electrical Specifications
- Coil Voltage: 27V DC (114DD compatible)
- Power Rating: 0.5W
- Contact Rating: 1A at 28V DC (100,000+ cycles)
- Signal Level: 10-50 µA at 10-50 mV
- Coil Power: 0.3-0.43W
- Contact Resistance: ≤50mΩ initial, ≤200mΩ after life test
Protection Features
- Reverse polarity protection on coil circuit
- Integrated transient voltage suppression
- EMI/RFI suppression capabilities
- Overvoltage protection
Performance Characteristics
- Switching Speed: ≤4ms action/release time
- Dielectric Strength: 500 Vr.m.s. (normal), 250 Vr.m.s. (low pressure)
- Insulation Resistance: >500 MΩ initial
- Operational Life: 100,000+ cycles
Physical Specifications
- Package: TO-5 metal can
- Sealing: ≤1.0×10⁻³ Pa·cm³/s leakage rate
- Weight: <3 grams
- Temperature Range: -65°C to +125°C
Protected System Integration
- Verify compatibility with existing 114DD system interfaces
- Confirm wiring polarity requirements are met by protection features
- Test protection functionality under simulated fault conditions
- Validate EMI/transient suppression performance
- Update system documentation with enhanced protection specifications
Application Scenarios
- Military aircraft with complex wiring systems
- Drone systems prone to wiring errors during maintenance
- Aircraft engine controls in high-EMI environments
- Systems with frequent maintenance and reconnection
- Applications requiring enhanced fault tolerance
- Legacy systems originally using Teledyne 114DD components
- Metal Sealed Military Relay JRW-222MA TO-5
- Military Metal Smart Relay with Reverse polarity protection function Power 0.5W
- Reverse Polarity Protected Metal Relay JRW-222MA TO-5 Replace Of Teledyne 114DD
- High Reliability Aviation Military Relay JRW-222MA TO-5 With coil transient suppression function
- Metal Relay Designed for Aviation and Military Applications
- Aviation Relay with Military Grade Metal Design
- Military Aviation Relay for Drone,Aircraft Engine PCB Board
- High quality Aviation relay for Engine,Train,Plane maintain
Value Proposition
- Enhanced system protection against wiring errors
- Reduced maintenance costs from accidental damage
- Improved reliability in high-EMI environments
- Extended relay life through transient protection
- Simplified system design with integrated protection
- Stable supply chain for obsolete 114DD components
Certifications & Compliance
- Performance meets/exceeds original 114DD specifications
- Protection features validated through testing
- Manufactured under modern quality systems
- RoHS compliant materials
- EMI/transient suppression performance documentation
Customization Options
- Voltage variants with protection features
- Enhanced protection levels for specific applications
- Special EMI suppression requirements
- Custom testing for protection validation
- Marking to match original component identification
Production Process
- Material qualification for protection components
- Precision TO-5 component manufacturing
- Integration of protection circuitry
- Hermetic sealing process
- Comprehensive electrical and protection testing
- Final quality and protection validation
Protection Advantages
- Integrated protection vs external circuitry required
- Enhanced reliability in fault conditions
- Reduced system complexity and component count
- Improved maintenance safety and ease
- Better EMI performance in sensitive systems
Frequently Asked Questions
Q1: How does reverse polarity protection work?
A: The integrated protection circuitry prevents damage if coil voltage is connected with incorrect polarity, allowing safe operation regardless of connection orientation.
Q2: Is the JRW-222MA compatible with all Teledyne 114DD variants?
A: Designed as a form-fit-function replacement for specific 114DD variants. Verify compatibility with your exact part number using our cross-reference data.
Q3: What are the benefits of coil transient suppression?
A: Suppression protects both the relay and control circuitry from voltage spikes, reduces EMI, and extends component life in electrically noisy environments.
Q4: Can protection features be disabled if not needed?
A: Protection features are integrated and always active, providing continuous protection without requiring external configuration.
Q5: How does this compare to adding external protection components?
A: Integrated protection offers space savings, simplified design, guaranteed compatibility, and reduced component count compared to external protection solutions.
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