MOC3031TM

Triac, SCR Output Optoisolators Overview

The onsemi MOC3031TM is a single-channel optoisolator featuring a Triac output with an integrated zero-crossing detection circuit. It provides robust electrical isolation between input and output sides, rated at 4170Vrms dielectric strength. The device operates within a temperature range of -40°C to +85°C and is housed in a 6-pin DIP package suitable for through-hole mounting. Key electrical parameters include a maximum forward voltage of 1.5V, a peak repetitive off-state voltage of 250V, and a maximum trigger current of 15mA. Power dissipation is specified at 250mW.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for reduced electromagnetic interference during switching
• High isolation voltage rating ensuring safe separation between control and power circuits
• Triac output configuration designed for direct AC load driving applications

Triac, SCR Output Optoisolators Applications

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

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix TM against the manufacturer's official documentation to confirm pinout compatibility and isolation ratings. Check for obsolete status or lifecycle notices as availability may vary. Ensure the selected variant matches the required package type and thermal specifications for the intended application environment.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to minimize noise in AC line applications. Compare the 4170Vrms isolation rating against system safety requirements. Consider the 250V peak off-state voltage limit when designing for higher voltage AC loads. Verify that the 15mA trigger current aligns with the driving logic capabilities.

Triac, SCR Output Optoisolators Part Context

The MOC3031TM belongs to the MOC series of Triac and SCR output optocouplers from onsemi. This family is engineered for general-purpose AC switching applications where galvanic isolation is necessary. The zero-crossing feature distinguishes it from random-phase variants, offering improved performance in sensitive electronic environments.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official cross-reference guides for compatible alternatives if this specific model is unavailable.