MOC3012M

Triac, SCR Output Optoisolators Overview

The MOC3012M is a random-phase triac driver optocoupler designed for interfacing electronic controls with power triacs. It features an AlGaAs infrared emitting diode and a light-activated silicon bilateral switch. The device supports resistive and inductive loads at 115 VAC operations without zero-crossing circuitry. Key electrical parameters include a maximum forward current of 60 mA, a forward voltage of 1.15 V, and an isolation voltage of 5300 Vrms. The peak off-state output voltage is rated at 250 V. Operating temperatures range from -40°C to +85°C.

Triac, SCR Output Optoisolators Feature Summary

• Optically isolated interface between low-voltage control circuits and high-power triac loads
• Contains an AlGaAs infrared LED paired with a light-activated silicon bilateral switch
• Random-phase triggering capability allows firing at any point in the AC cycle
• Designed specifically for controlling resistive and inductive loads in 115 VAC applications

Triac, SCR Output Optoisolators Applications

• Interfacing electronic controls with power triacs for load management
• Control of resistive heating elements in AC power systems
• Driving inductive loads such as motors or transformers via triac switches
• Solid-state relay implementations requiring random-phase triggering

Triac, SCR Output Optoisolators Procurement Notes

Verify component authenticity through authorized onsemi distributors due to discontinued status by Fairchild Semiconductor. Confirm DIP-6 package integrity and pin alignment against official mechanical drawings. Check date codes for storage history given the obsolete classification. Ensure compliance with RoHS specifications if required by end-use regulations. Validate that the specific batch matches the 250V peak rating rather than the 400V variant found in other series members.

Triac, SCR Output Optoisolators Selection Notes

Select this component when random-phase triac triggering is required for 115 VAC applications. Choose over zero-crossing variants like MOC3010M when immediate response to control signals is necessary regardless of AC waveform phase. Consider the 250V peak output rating suitability for lower voltage triac gates compared to the 400V rated MOC3022M. Evaluate thermal dissipation requirements within the -40°C to +85°C operating range for the specific enclosure environment.

Triac, SCR Output Optoisolators Part Context

The MOC3012M belongs to the MOC301XM series of random-phase optoisolators originally manufactured by Fairchild Semiconductor and now managed by onsemi. This series includes related parts such as MOC3010M and MOC3011M, which share similar structural designs but may differ in specific trigger characteristics or voltage ratings. The product line serves as a standard solution for galvanic isolation in AC power control circuits.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided documentation. Due to the obsolete status, direct cross-referencing requires consulting onsemi's official obsolescence notices or equivalent random-phase triac drivers with matching 250V peak output and DIP-6 packaging.