Product Attributes

Model No.: JQ-79F

Brand: YM

Ambient Temperature: -55℃~85℃

Sinusoidalvibration: 10g,10Hz～500Hz

Cyclone: 2.5kPa(25000m)

Coil Powerconsumption: Line coil power consumption: ≤15W (stablevalue)

Dielectricwithstandvoltage: Normal atmospheric pressure:1800Vr.m.s., 50Hz Under low pressure: 500Vr.m. s .,50 Hz

Contact Resistance Orvoltage Drop: Initial value ≤50mΩ (120 mV) after life test ≤150mΩ insulation resistance N o r m a l a t m o s p h e r i c p r e s s u r e : ≥ 1 0 0 0 M QHigh moisture under and after life:≥ 1 0 M Q time parameter Action time: ≤30 ms Release time: ≤20 ms weight ≤285g mai

Insulationresistance: ≥ 1 0 0 0 M Q

Time Parameter: Action time: ≤30 msRelease time: ≤20 ms

Weight: ≤285g

Military Aviation Contactor JQ-79F:

Premium Replacement for 1910AM ECE in Aerospace Systems

YM introduces the JQ-79F Military Aviation Contactor, an advanced direct replacement solution engineered to seamlessly substitute the legacy 1910AM ECE contactor in critical aviation, drone, and aerospace applications. This high-precision component is designed for superior reliability in controlling aircraft engines, train systems, and aircraft power circuits. Manufactured with the same rigorous standards as our Military Metal Relay and Aviation Magnetic Valve product lines, the JQ-79F delivers exceptional performance as a specialized Aviation Contactor for Aircraft in the most demanding environments.

Product Visual Documentation

YM Product Range including Aviation Contactors and Related Components

Distinctive Features & Engineering Advantages

The JQ-79F is more than just a replacement; it's a performance-enhanced solution built with modern materials and processes. It reflects our deep expertise in manufacturing critical components like Solid State Relays and Hydraulic Circuit Breakers.

Exact Form-Fit-Function Replacement: Engineered to be a direct mechanical and electrical drop-in for the 1910AM ECE contactor, enabling effortless system upgrades and maintenance without retrofitting.
Superior Contact Performance: Features extremely low initial contact resistance (≤50mΩ) for minimal power loss and heat generation. Maintains excellent performance post-durability testing (≤200mΩ), a standard consistent with our PCB Board Relay quality.
High-Speed, Precision Switching: Ultra-fast action time (≤3ms) and release time (≤4ms) ensure precise control timing essential for flight-critical avionics and automated systems.
Hermetic Sealing for Harsh Environments: Military-grade sealed enclosure with a maximum leakage rate of ≤10⁻¹ Pa·cm³/s provides robust protection against moisture, dust, sand, and rapid pressure changes, utilizing technology similar to our Aviation Oil Sealed Valves.
Extended Service Life & Reliability: Rated for 1,000,000 operations at full rated load (1A, 28V DC), significantly reducing maintenance frequency and lifecycle costs for operators.
Lightweight & Efficient Design: Weighing under 3 grams with low coil power consumption (0.3-0.43W), it is optimized for modern aerospace applications where weight and power efficiency are critical.
Robust Electrical Isolation: High dielectric strength (500Vrms at normal pressure) and excellent insulation resistance (>500MΩ) ensure safe, reliable operation in complex systems alongside sensitive components like Aviation Temperature Sensors.

Complete Technical Specifications

Electrical Characteristics & Performance Data

Coil Power Requirement: 0.3 Watts to 0.43 Watts.
Contact Load Capacity & Mechanical Life:
- Standard Resistive Load: 1 Ampere at 28 Volts DC for 1,000,000 cycles.
- Low-Level (Dry Circuit) Load: (10 to 50) microamperes (μA) at (10 to 50) millivolts (mV) for 1,000,000 cycles.
Contact Resistance Specifications:
- Maximum Initial Value: 50 milliohms (mΩ).
- Maximum Value After Endurance Testing: 200 milliohms (mΩ).
Dynamic Timing Parameters:
- Operate (Action) Time: 3 milliseconds or less.
- Release (Drop-out) Time: 4 milliseconds or less.
- Minimum Required Coil Excitation Pulse Width: 10 to 50 milliseconds.

Environmental, Isolation & Physical Properties

Dielectric Withstanding Voltage (Hi-Pot Test):
- At Standard Atmospheric Pressure: 500 Volts RMS, 50Hz.
- Under Reduced Pressure (Simulated High Altitude): 250 Volts RMS, 50Hz.
Insulation Resistance:
- Initial Measurement under Standard Conditions: Exceeds 500 Megohms (MΩ).
- After High-Level Life Cycle Testing: Exceeds 50 Megohms (MΩ).
Mass: Less than 3 grams.
Seal Integrity (Hermeticity): Maximum allowable helium leakage rate is 1 x 10⁻¹ Pascal cubic centimeters per second (Pa·cm³/s).
Coil Voltage (Direct Current): Available in standard aviation DC voltages. Contact for specific requirements or integration with custom Military Aviation Connector assemblies. All specifications are referenced at an ambient temperature of 25°C (77°F).

Target Application Environments

The JQ-79F is a versatile High Power Aviation Contactor designed for mission-critical switching across diverse and demanding sectors.

Legacy Aircraft System Sustainment: Direct replacement for 1910AM ECE contactors in military and commercial aircraft for functions like fuel pump control, landing gear sequencing, anti-ice system activation, and auxiliary power unit (APU) management.
Unmanned Aerial Systems (UAS): Critical for motor controller enable/disable, payload power switching (e.g., cameras, LIDAR), communication system control, and battery bus management in advanced drones.
Rail Transportation & Ground Support: Deployment in locomotive control systems, ground power carts, and airport support vehicles where high vibration resistance and long life are required.
Industrial Automation & Control: Used in harsh-environment machinery, automated test equipment, and energy systems, often interfacing with Military Pressure Sensors and Industrial Power Relays for complete control solutions.
Defense & Aerospace Test Rigs: Providing reliable load switching in qualification and acceptance testing of other Aerospace Components, such as Aviation Haulage Pressure Sensors or Military Electronic Horns.

Step-by-Step Installation & Replacement Guide

System Verification & Safety Preparation: Confirm the existing part number is 1910AM ECE. Execute a complete system power-down, isolation, and follow all applicable safety protocols (LOTO).
Legacy Component Removal: Clearly label or photograph the existing wiring configuration. Carefully disconnect all leads from the old contactor terminals. Remove the mounting hardware to extract the unit.
JQ-79F Installation: Position the new JQ-79F contactor in the same mounting location. Secure it firmly using the appropriate hardware, ensuring no strain is placed on the housing or terminals.
Electrical Reconnection: Reconnect all wires to their corresponding terminals on the JQ-79F according to your documentation. In systems with integrated control logic using PCB Signal Relays, verify signal voltage and current compatibility.
Pre-Operational Verification: Before applying main power, perform a thorough visual inspection. Use a multimeter to check for proper continuity and absence of short circuits. Momentarily energize the coil to confirm audible actuation.
System Commissioning & Performance Validation: Restore system power. Initiate a phased test sequence: first with no load, then low-power functional tests, and finally full operational testing under monitored conditions to validate that performance meets or exceeds the original system specifications.

Strategic Benefits for Global Procurement

Partnering with YM for the JQ-79F delivers significant competitive and operational advantages to OEMs, MROs, and defense integrators worldwide.

Enhanced Supply Chain Resilience: Provides a reliable, high-quality alternative source for obsolete or single-sourced components like the 1910AM ECE, mitigating supply chain disruption risks.
Optimized Total Cost of Ownership (TCO): The combination of extended service life, high reliability, and competitive acquisition cost results in lower long-term operating and maintenance expenses.
Performance Assurance with Modern Technology: While maintaining perfect compatibility, the JQ-79F often incorporates material and design improvements, potentially offering enhanced electrical characteristics and greater consistency than aging original parts.
Streamlined Procurement & Logistics: Sourcing from a single, reliable manufacturer like YM for critical components, including New Energy Relays and Aviation Microswitches, simplifies inventory management and procurement processes.
Access to Specialized Engineering Support: Leverage YM's extensive cross-industry expertise in Automotive Relay and Metal Sealing Relay technologies for comprehensive application engineering and system integration support.

Manufacturing Process & Quality Assurance

Every JQ-79F contactor is the result of a disciplined manufacturing process backed by stringent quality controls.

Precision Automated Production: Utilization of automated assembly lines and controlled environment stations for critical processes such as welding and hermetic sealing to ensure consistent quality and dimensional accuracy.
Comprehensive Multi-Stage Testing: 100% in-line testing of all key electrical parameters (contact resistance, operate/release time, coil function). Rigorous batch sampling for environmental stress screening (ESS), life cycle testing, and seal integrity verification.
Strict Material & Process Control: Incoming materials are subjected to thorough inspection. Manufacturing processes are documented and controlled under a certified quality management system, similar to protocols for our Polarized Relay production.
Continuous Improvement Culture: Operational data from production and field performance feedback are systematically analyzed to drive product and process refinements, ensuring the JQ-79F remains at the forefront of replacement contactor technology.