JSB-85M Military Programmable Sealed Hybrid Delayed Relay 1kPa - Direct Replacement for LEACH Relay T441 Series
Product Overview
The JSB-85M represents advanced Military Metal Sealing Relay technology with integrated programmable hybrid delay functionality. This sophisticated Aviation DC Relay serves as a direct replacement for the USA-designed LEACH T441 series, offering enhanced programmability and reliability in a compact sealed package. As a specialized Military Electromagnetic Relay with 1kPa environmental sealing, it combines electromagnetic reliability with solid-state timing precision for critical aerospace sequencing applications. Manufactured by YM with 18+ years of precision engineering expertise, this Solid State Relay hybrid solution provides programmable delay functions from milliseconds to minutes, making it ideal for complex timing and sequencing requirements in modern military and aviation systems.
Technical Specifications
- Relay Type: Hybrid Programmable Delay (Electromagnetic + Solid-State)
- Contact Configuration: DPDT (Double Pole Double Throw)
- Rated Coil Voltage: 27VDC Standard
- Contact Rating: 1A @ 28VDC Resistive Load
- Coil Power Consumption: 0.3-0.43W
- Delay Range: Programmable from 10ms to 60 minutes (adjustable in 1ms increments)
- Delay Accuracy: ±1% of set value or ±10ms (whichever is greater)
- Contact Resistance: Initial ≤50mΩ; After life test ≤200mΩ
- Operate/Release Time: ≤4ms each (excluding programmed delay)
- Dielectric Strength: 500Vr.m.s. @ normal pressure; 250Vr.m.s. @ low pressure
- Insulation Resistance: >500MΩ normal; >50MΩ post high-level life test
- Weight: <3g
- Sealing Performance: 1kPa pressure rating; Leakage rate ≤10⁻³ Pa·cm³/s
- Programming Interface: External programming pins for delay setting
- Operating Temperature: -65°C to +125°C
- Direct Replacement For: LEACH T441 series programmable delay relays
Key Features & Advantages
- Hybrid Technology Integration: Combines electromagnetic reliability with solid-state timing precision for optimal performance in harsh environments.
- Wide Programmable Delay Range: Adjustable from 10 milliseconds to 60 minutes with high precision, eliminating external timing components.
- Direct LEACH T441 Replacement: Form-fit-function compatible with industry-standard programmable delay relays, including programming interface compatibility.
- Enhanced Timing Stability: Superior temperature stability (±0.01%/°C) compared to RC-based timing circuits in standard relays.
- Reduced Component Count: Integrates timing function within relay package, saving PCB space and improving system reliability.
- Optimized PCB Board Relay Design: Compact footprint with programming pins arranged for easy access in high-density layouts.
- Military Programmable Sealed Hybrid Delayed Relay JSB-85M
- Military Metal Relay JSB-85M 1kpa
- Military Hybrid Delay Relay JSB-85M Sealed Design
- Military Metal Relay JSB-85M 1kpa replace of USA Model LEACH T441
- Military Relay JSB 85M Sealed Hybrid Delay Feature
-
-
- 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
Application Scenarios
This advanced Military Metal Relay is engineered for precision timing applications:
- Weapon System Sequencing: Safe-arm delays, firing sequences, and deployment timing controls
- Aircraft System Sequencing: Engine start sequences, landing gear operations, and system initialization delays
- Missile Launch Systems: Stage separation timing, guidance system activation, and safety interlocks
- Test & Measurement Equipment: Precision timing for avionics testing, system verification, and maintenance procedures
- Industrial Process Control: Sequencing of critical processes where precise timing is essential for safety and quality
- Legacy System Upgrades: Direct replacement in LEACH T441 based systems with enhanced timing capabilities
Installation & Programming Steps
- System Compatibility Verification: Confirm existing system uses LEACH T441 series with compatible programming interface.
- Delay Parameter Determination: Identify required delay times for each application circuit.
- Programming Setup: Configure delay parameters using external programming interface or pre-program at factory.
- PCB Compatibility Check: Verify footprint and programming pin alignment matches T441 layout.
- Component Removal: Carefully desolder existing T441 relay using appropriate equipment.
- Programming Verification: Test delay settings before installation if external programming capability exists.
- Precision Installation: Align JSB-85M with correct pin orientation, including programming pins.
- Functional Testing: Verify delay accuracy and relay operation under actual operating conditions.
Procurement Value Proposition
- System Simplification: Eliminates external timing components, reducing circuit complexity and potential failure points.
- Enhanced Timing Precision: Superior accuracy and stability compared to discrete timing solutions.
- Reduced Integration Time: Plug-and-play replacement for T441 systems with minimal requalification.
- Space Optimization: Compact integrated design saves valuable PCB real estate in dense avionics packages.
- Lifecycle Cost Reduction: Higher reliability and reduced component count lower maintenance and ownership costs.
Certifications & Compliance
- CE and UL certified components and materials
- Compliant with MIL-PRF-6106 military relay specifications
- SGS-audited manufacturing processes and quality systems
- RoHS compliant materials and production methods
- ISO 9001:2015 certified quality management system
- Timing accuracy testing per MIL-STD-202 methods
Customization Options
While optimized as a T441 replacement, YM offers extensive customization:
- Custom delay ranges and timing characteristics for specific applications
- Alternative programming interfaces (digital, analog, or factory pre-set)
- Modified contact configurations or current ratings
- Enhanced sealing for specific environmental requirements
- Special timing accuracy testing and calibration for critical applications
- Private labeling and application-specific programming documentation
Our expertise spans Automotive Relay, Industrial Power Relay, and PCB Signal Relay technologies, with specialized experience in hybrid relay design for demanding applications.
Quality Assurance Process
Every JSB-85M undergoes rigorous 9-stage quality verification:
- Incoming material certification for both electromagnetic and solid-state components
- Precision assembly of hybrid circuit with automated optical inspection
- Timing circuit calibration across full temperature range
- Programming interface functional verification
- Hermetic sealing with 1kPa pressure testing and leak rate verification
- Extended delay accuracy testing at multiple set points
- Temperature cycling with timing stability verification
- Electrical performance testing across specified parameters
- LEACH T441 compatibility verification including programming interface
Frequently Asked Questions
Q1: How does hybrid technology improve upon standard delay relays?
A1: Hybrid design combines the high-current switching capability and environmental robustness of electromagnetic relays with the precision and programmability of solid-state timing, offering the best of both technologies.
Q2: What programming methods are available?
A2: Three options: 1) Factory pre-programming to customer specifications, 2) External programming via dedicated pins using simple resistor networks, 3) Advanced digital programming for systems with microcontroller interfaces.
Q3: How does timing accuracy compare to RC-based delay circuits?
A3: The JSB-85M provides ±1% accuracy versus typical ±10-20% for RC circuits, with significantly better temperature stability (±0.01%/°C vs ±0.5%/°C for RC).
Q4: Can existing T441 programming circuits be used without modification?
A4: Yes, the JSB-85M maintains programming pin compatibility with T441 series, allowing direct replacement in most applications. Minor adjustments may be needed for extreme timing ranges.
Q5: Are samples available with custom programming?
A5: Yes, we provide up to 3 free samples programmed to your specifications for qualified B2B customers. Please provide required delay times with your sample request.
Q6: What is the lead time for custom-programmed batches?
A6: Standard products: 3-4 weeks. Custom programmed batches: 4-5 weeks. Extensive calibration for critical timing applications adds 1-2 weeks.
Contact Now