MOC3073M

Triac, SCR Output Optoisolators Overview

The MOC3073M is a 6-pin DIP random-phase Triac driver optocoupler from onsemi. It features a PhotoTriac output capable of switching up to 800 V peak voltage. The device operates within a temperature range of -40°C to +85°C and has a maximum trigger current of 6 mA. Key electrical parameters include a forward voltage of 1.18 V, power dissipation of 330 mW, and an insulation voltage of 4170 Vrms. It provides single-channel isolation for AC load control applications.

Triac, SCR Output Optoisolators Feature Summary

• Random-phase triggering capability for precise AC phase control without zero-crossing detection constraints.
• High-voltage isolation with 4170 Vrms insulation rating ensuring safety in high-potential environments.
• Robust output stage designed to drive Triacs directly with an 800 V peak blocking voltage.

Triac, SCR Output Optoisolators Applications

• AC motor speed control systems
• Solid-state relay (SSR) designs
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific package variant required, as the MOC3073 series includes both surface-mount (SVM) and through-hole (M) options. Confirm that the random-phase characteristic aligns with the application's noise immunity requirements compared to zero-crossing variants. Ensure compliance with DIN EN/IEC60747-5-5 standards if applicable to the target market regulations.

Triac, SCR Output Optoisolators Selection Notes

Select this component when random-phase firing is necessary for applications like light dimming or motor control where zero-crossing switching would cause audible noise or performance issues. Consider the 6 mA max trigger current against the gate sensitivity of the driven Triac. Evaluate the PDIP-6 package for through-hole assembly needs versus SMT alternatives if space constraints differ.

Triac, SCR Output Optoisolators Part Context

The MOC3073M belongs to the MOC series of Triac & SCR Output Optocouplers by onsemi. This family is engineered for industrial and consumer AC power switching applications. The MOC3073M specifically addresses scenarios requiring non-synchronized phase control, distinguishing it from zero-crossing counterparts like the MOC306x series within the same product line.

Triac, SCR Output Optoisolators Replacement Considerations

Direct substitutes may include other random-phase Triac drivers such as the MOC3021 or MOC3041, provided they match the 800 V output rating and 6 mA trigger current specifications. Verify pinout compatibility and insulation voltage ratings before substitution.