MOC3021FM

Triac, SCR Output Optoisolators Overview

The MOC3021FM is a six-pin DIP random-phase optoisolator featuring a phototriac output. It provides electrical isolation for AC power control applications with an insulation voltage of 5000 Vrms. The device supports a peak off-state voltage of 400 V and a maximum continuous output current of 100 mA. It operates within a temperature range of -40°C to +100°C, dissipating up to 330 mW. The input forward current is rated at 50 mA with a forward voltage of 1.15 V.

Triac, SCR Output Optoisolators Feature Summary

• Random-phase triac driver output for non-zero-crossing switching
• High voltage isolation capability suitable for mains control
• Designed for controlling resistive and inductive loads

Triac, SCR Output Optoisolators Applications

• AC power control circuits
• Solid-state relay drivers
• Industrial motor controls

Triac, SCR Output Optoisolators Procurement Notes

Verify the manufacturer source carefully as Fairchild Semiconductor assets are now part of onsemi. Confirm the specific datasheet version and package marking to ensure authenticity. Check RoHS compliance status and lead time requirements directly with authorized distributors or the current manufacturer's official channels before finalizing procurement decisions.

Triac, SCR Output Optoisolators Selection Notes

Select this component when random-phase triggering is required rather than zero-crossing. Ensure the load current does not exceed the 100 mA RMS rating without external heat sinking. Verify that the 400 V blocking voltage is sufficient for the target AC line voltage. Consider the PDIP-6 package constraints for thermal management in enclosed spaces.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC302x series of triac output optocouplers. It is functionally similar to the MOC3021 but may differ in packaging or specific manufacturing origin depending on the supplier. It serves as a standard interface between low-voltage logic circuits and high-voltage AC power stages.

Triac, SCR Output Optoisolators Replacement Considerations

MOC3021SR2M (onsemi) offers SMD packaging with similar electrical characteristics. MOC3021M (Lite-On) provides a through-hole alternative. Verify pinout compatibility and insulation voltage ratings when substituting.