JSB-56P 1S-12 II L 12V Military Aviation Time Delayed Relay

Product Overview

The JSB-56P 1S-12 II L 12V is a high-precision Military Aviation Time Delayed Relay engineered for mission-critical sequencing and control in aerospace and defense systems. This Metal Sealed Military Relay integrates a reliable delay function within a robust military-grade metal housing, providing timed switching operations for 12V DC systems. Designed as a core component for Relay for Aerospace and Military Systems, it ensures accurate performance where timing is as crucial as connectivity, making it ideal for system initialization, safety interlocks, and staged power-up sequences in Aviation Relay for Drone, Aircraft Engine applications.

Product Images

JSB-56P Military Aviation Time Delayed Relay Front and Terminal View

JSB-56P Military Aviation Time Delayed Relay Side and Internal View

Technical Specifications

Coil & Power: Rated for 12V DC operation. Coil power consumption is low, ranging between 0.3W and 0.43W.

Contact Performance:

Load & Electrical Life: Handles resistive loads of 1A at 28V DC for a minimum of 1,000,000 cycles.
Low-Level Switching: Reliably manages sensitive signals from (10-50) μA at (10-50) mV for 1,000,000 operations.
Contact Resistance: Excellent conductivity with initial resistance ≤ 50mΩ, and ≤ 200mΩ after full life testing.

Timing & Delay Parameters: Features fast basic switching with action time ≤ 4ms and release time ≤ 4ms. The integrated delay function provides precise timing control as specified per model variant. Minimum incentive pulse width is (10–50) ms for reliable activation.

Electrical Insulation & Robustness:

Dielectric Strength: 500Vr.m.s., 50Hz at normal atmospheric pressure; maintains 250Vr.m.s., 50Hz under low-pressure conditions.
Insulation Resistance: Exceeds 500MΩ initially and remains above 50MΩ after high-level life endurance tests.

Physical & Environmental:

Weight: Engineered for weight-sensitive applications at less than 3 grams.
Hermetic Sealing: Features a Metal Sealing Relay construction with a leakage rate ≤ 1.0 x 10⁻¹ Pa·cm³/s, ensuring immunity to moisture, dust, and pressure variations.

Product Features & Advantages

The JSB-56P stands out as a premier Aviation Mixed Delay Relay due to its integrated design and military pedigree:

Integrated Delay Function: Eliminates the need for external timing circuits, saving board space and increasing system reliability in compact PCB Board Relay applications.
Military-Grade Construction: Housed in a durable metal case, it offers superior resistance to shock, vibration, and extreme temperatures compared to standard Industrial Power Relays.
High Reliability & Long Life: Rated for 1,000,000+ operations at full load, ensuring longevity and reducing maintenance needs in inaccessible military aircraft Relay systems.
Hermetically Sealed: The Metal Sealing Relay design guarantees stable performance in low-pressure, high-altitude, and corrosive environments critical for aviation.
Dual-Signal Competence: Excellently manages both standard power loads (1A/28VDC) and sensitive low-level signals, making it a versatile PCB Signal Relay.
Precision & Consistency: The delay timing is precise and repeatable, a crucial feature for sequential system operations in avionics and UAVs.

How to Implement the JSB-56P Time Delayed Relay

Follow these key steps for successful integration into your system:

Circuit Design Review: Confirm your system's 12V DC coil supply matches the relay requirement. Design the drive circuit to provide the minimum activation pulse width (>10ms).
Mounting: As a PCB Board Relay, ensure correct footprint alignment on your PCB. Use appropriate soldering techniques to avoid damaging the hermetic seal.
Delay Configuration: Identify the specific delay timing (e.g., On-Delay, Off-Delay) and duration as per the JSB-56P variant's datasheet. Integrate this timing into your system logic.
Load Connection: Connect the load (up to 1A/28VDC resistive) to the relay's output contacts, observing any low-level switching guidelines if applicable.
System Integration & Testing: Power the coil to verify the delay function and contact operation. Perform in-circuit functional tests under simulated environmental conditions (vibration, temperature).
Validation: Conduct full validation, including timing accuracy, insulation resistance, and contact performance tests to ensure mission readiness.

Application Scenarios

This relay is vital for systems requiring controlled, timed sequences:

Aircraft & Avionics: Sequential power-up/shutdown of avionic bays, delayed activation of backup systems, and timed reset functions in communication relay aircraft networks.
Unmanned Aerial Systems (UAS/UAV): Staged deployment of payloads, delayed arming of systems for safety, and sequenced startup of propulsion and sensor suites in drones.
Military Vehicle Electronics: Timed interlocks for weapon systems, sequential lighting, and controlled initialization of communication gear.
Test & Ground Support Equipment: Providing precise timing for automated test sequences and equipment cycling.
High-Reliability Industrial Controls: Safety-critical processes where a fail-safe delay is necessary before initiating a secondary action.

Procurement Value: The JSB-56P reduces design complexity and part count by integrating the delay function, lowers total lifecycle cost through extreme durability, and enhances system reliability and safety—key factors for procurement officers in defense and aerospace.

Certifications & Compliance

Manufactured in a facility with a rigorous quality management system, the JSB-56P relay is designed and tested to meet stringent military (MIL) and aerospace performance standards for environmental, electrical, and mechanical stress. Specific qualification data is available for review by authorized partners and integrators.

Customization Options

YM Brand provides engineering support for tailored solutions based on the JSB-56P platform. Potential customizations include:

Adjustment of delay timing ranges to meet specific application windows.
Variations in coil voltage within a specified DC range.
Custom pinout or terminal configurations for specialized PCB layouts or panel mounts.
Additional screening and testing (burn-in, extended temperature cycling) per customer specifications.
Batch-specific labeling and documentation.

Production & Quality Assurance Process

Every Military Grade Time Delayed Relay is built under a controlled, multi-stage process ensuring consistent high quality:

Precision Component Assembly: Automated insertion and assembly of delay circuitry and relay mechanism in a controlled environment.
Hermetic Sealing: Critical metal welding process performed with 100% subsequent leak testing to guarantee the seal integrity.
Calibration & Functional Test: Each unit undergoes calibration of its delay function and testing of all basic relay parameters (coil, contact resistance, operate/release times).
Environmental Stress Screening: Batch-level exposure to temperature extremes, vibration, and electrical overstress to weed out infant mortality.
Final Quality Audit: Comprehensive visual, dimensional, and electrical verification before anti-static, protective packaging.

Frequently Asked Questions (FAQ)

Q1: What type of delay does the JSB-56P provide (e.g., On-Delay, Off-Delay)?
A1: The specific delay type (On-Delay, Off-Delay, or Interval) is defined by the model suffix ("1S-12 II L"). Please consult the detailed datasheet or contact our technical team for the exact timing profile of this variant to ensure it matches your system's sequencing logic.

Q2: How accurate and stable is the delay timing over temperature and lifetime?
A2: As a High-Precision Military Relay, the JSB-56P is designed for excellent timing stability. The delay circuitry is compensated to minimize drift across the specified operating temperature range, and the design ensures consistent timing throughout its rated operational life.

Q3: Can this relay replace a standard relay plus an external timer module?
A3: Absolutely. That is its primary advantage. It integrates both functions into one hermetically sealed, ruggedized package, simplifying your bill of materials (BOM), saving valuable PCB space, and improving overall system reliability by reducing interconnection points.

Q4: Is the delay time fixed or adjustable?
A4: The JSB-56P model described is typically a fixed-delay relay, with the delay time preset during manufacture according to the variant code. For applications requiring field-adjustable delay, please inquire about our other Time Delayed Relay families or customization services.

Q5: How does the hermetic seal benefit the delay function?
A5: The Metal Sealing Relay construction protects the internal delay circuitry and contacts from atmospheric contaminants like humidity and salt spray. This prevents corrosion and parameter drift, ensuring the delay timing remains accurate and reliable over decades, even in harsh environments—a critical requirement for any Aviation Mixed Delay Relay.