MOC3051XG

Triac, SCR Output Optoisolators Overview

The MOC3051XG is a zero-crossing triac output optoisolator manufactured by Isocom Components. It features a gallium arsenide infrared LED coupled to a triac silicon switch, providing electrical isolation between control and load circuits. The device offers an isolation voltage of 5000 VRMS and operates within a temperature range of -40°C to +100°C. Key electrical parameters include an off-state output terminal voltage of 600 V and a trigger current of 15 mA. The forward voltage of the input LED is specified at 1.2 V. Packaged in a standard 6-pin DIP configuration, it ensures reliable switching for AC loads with minimal noise generation.

Triac, SCR Output Optoisolators Feature Summary

• Zero-crossing detection capability reduces electromagnetic interference during switching events
• High isolation voltage rating ensures safety between low-voltage control and high-voltage load sides
• Integrated random phase triac output simplifies circuit design for AC power control applications

Triac, SCR Output Optoisolators Applications

• Solid state relay modules for industrial automation
• AC motor speed control systems
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix 'XG' corresponds to the through-hole PDIP package variant when sourcing. Confirm that the manufacturer designation aligns with Isocom Components 2004 LTD specifications. Check datasheet revisions for any updates to absolute maximum ratings or thermal characteristics. Ensure compatibility with existing PCB footprints for 6-pin DIP packages. Validate supply chain authenticity through authorized distributors.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to minimize electrical noise in AC control applications. Consider the 600 V off-state voltage rating for appropriate load voltage margins. Evaluate the 15 mA trigger current requirement against available drive circuit capabilities. Compare thermal performance requirements against the specified operating temperature range. Assess isolation voltage needs relative to system safety standards.

Triac, SCR Output Optoisolators Part Context

This part belongs to the family of triac output optoisolators designed for AC power switching. It differs from random phase variants by incorporating zero-crossing detection logic. The device integrates an infrared emitter and a silicon triac detector within a single encapsulated unit. This integration provides compact solutions for galvanic isolation in power electronics.

Triac, SCR Output Optoisolators Replacement Considerations

MOC3051SMT&R serves as a surface mount alternative offering identical electrical characteristics in a different package format.