50V/1A W8113D/W8114S

Overview of 50V/1A W8113D/W8114S Optocoupler Relays

The 50V/1A W8113D and W8114S series represent highly dependable solid-state relay solutions engineered for demanding electrical isolation and precise signal transmission tasks. Designed with a focus on system safety, these components deliver exceptional input-to-output isolation voltage, effectively blocking electrical noise and ensuring absolute signal purity across complex circuit architectures. For manufacturers seeking efficient supply chain management, these relays offer a highly compatible pin definition and electrical characteristic profile that matches mainstream optocouplers and solid-state relays currently available on the market. This compatibility provides a direct, efficient replacement strategy without the need for extensive circuit board redesigns. Every unit undergoes strict aging tests and comprehensive factory quality control inspections to guarantee consistent, long-term operation. By integrating these components, engineering teams can enhance the overall stability of their control systems while maintaining strict adherence to project timelines and budget constraints.

Primary Applications of W8113D/W8114S Isolation Relays

• Signal isolation: Provides essential protection for sensitive microcontrollers and logic circuits by isolating them from high-voltage spikes and transient electrical noise, ensuring uninterrupted data integrity in industrial environments.

• On-off circuit: Delivers consistent switching performance with minimal power loss, making it highly suitable for automated control panels and industrial machinery where precise state control is critical for operational safety.

• Motor drive circuit: Engineered with low latency and rapid response capabilities, these components meet the rigorous demands of high-frequency switching circuits, enabling precise control and synchronization in complex motor drive applications.

• Ignition control circuit: Maintains stable triggering characteristics under extreme environmental conditions, providing the reliability required for critical ignition systems in automotive and heavy machinery sectors.

• Replace the pulse transformer: Acts as a modern, space-saving alternative to traditional pulse transformers, significantly reducing electromagnetic interference vulnerability while minimizing the overall footprint of the printed circuit board.

By addressing these specific application requirements, the W8113D and W8114S series empower design engineers to build more resilient control systems. The exceptional dynamic switching characteristics ensure that even in environments with severe electrical interference, the core logic remains protected and fully operational throughout the equipment lifecycle.

Key Features of 50V/1A Solid State Switching Relays

• Bidirectional configuration / unidirectional configuration: Offers versatile design options to accommodate a wide variety of circuit layouts, providing engineers with the flexibility needed for both alternating current and direct current load management.

• Output level normally open type: Establishes a secure default state during power-off scenarios, preventing accidental load activation and enhancing the overall safety protocols of the automated system.

• Maximum output voltage 50V: Capable of handling substantial voltage requirements for industrial control loops while maintaining a highly compact form factor for dense circuit board designs.

• Maximum output connection resistance 0.3Ω: Drastically reduces thermal dissipation during continuous operation, which improves overall energy efficiency and extends the lifecycle of the surrounding electronic components.

• Rated output current 1.0A: Delivers sufficient current capacity to directly drive secondary relays, contactors, and small motors without requiring additional amplification stages.

• Working temperature -55℃~+100℃: Ensures continuous, stable functionality in extreme thermal environments, supported by a rigorous quality control system that includes extensive thermal cycling and aging verification.

Beyond these technical specifications, the series is fully aligned with global environmental and safety standards. Compliance with RoHS and REACH directives ensures that terminal products utilizing these relays will face fewer regulatory hurdles during international market entry. This commitment to environmental compliance and safety certification significantly reduces time-to-market for new industrial equipment, providing a clear advantage for global distribution.

Dimension and Pin Definition for W8113D/W8114S Packages

The physical packaging of electronic components plays a critical role in manufacturing efficiency and assembly line optimization. The W8113D model is housed in a standard DIP6 single-channel package, ideal for through-hole soldering and legacy system upgrades. Conversely, the W8114S model utilizes an SOP6 single-channel package, specifically optimized for modern surface mount technology and automated reflow soldering processes. Both packaging formats are available with tape and reel options, perfectly accommodating high-speed automated placement machines. This adaptability minimizes manual handling errors, accelerates production throughput, and reduces overall assembly costs. The standardized dimensions and pin configurations also ensure that these relays can serve as direct replacements for existing components, allowing procurement teams to diversify their component sourcing without forcing engineering departments to alter established printed circuit board layouts.

Model	Package	Dimension(mm)	Pin Definition (top view)
W8113D	DIP6/single channel
W8114S	SOP6/single channel