MOC3081VM

Triac, SCR Output Optoisolators Overview

The MOC3081VM is a zero-crossing triac output optocoupler manufactured by onsemi. It features a single channel with a photo-triac output and an integrated zero-crossing detection circuit for low EMI switching. The device provides high isolation voltage of 4170 Vrms and supports an off-state output voltage (VDRM) of 800 V. It operates within a temperature range of -40°C to +85°C, has a maximum forward current of 60 mA, and typical forward voltage of 1.3 V. Power dissipation is rated at 250 mW. The component is housed in a 6-DIP package suitable for through-hole mounting.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for minimized electromagnetic interference during AC load switching
• High insulation capability with 4170 Vrms isolation voltage between input and output sections
• Robust off-state blocking voltage rating of 800 V for reliable operation in mains-powered applications

Triac, SCR Output Optoisolators Applications

• Solid state relay driver circuits
• AC motor speed control systems
• Lighting dimmer applications

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm package type and tape/reel versus tube packaging options. Ensure the procurement source provides valid UL or IEC certification documents required for safety compliance in end products. Cross-reference the ordering part number with the official onsemi catalog to avoid discrepancies in isolation ratings or thermal specifications.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to reduce electrical noise in AC power control designs. The 800 V blocking voltage makes it suitable for standard line voltages. Consider the 6-DIP package constraints for PCB layout. Verify that the input LED drive current remains within the 60 mA maximum limit for optimal lifetime and reliability under continuous operation conditions.

Triac, SCR Output Optoisolators Part Context

This device belongs to the MOC3081M series of triac output optocouplers from onsemi. It is designed specifically for applications requiring galvanic isolation between low-voltage control logic and high-voltage AC loads. The series is widely used in industrial and consumer electronics for safe switching of resistive and inductive loads.

Triac, SCR Output Optoisolators Replacement Considerations

Compatible substitutes include the MOC3081TVM and MOC3083M. Verify pinout compatibility and ensure the replacement maintains the same zero-crossing functionality and voltage ratings.