MOC3021SVM

Triac, SCR Output Optoisolators Overview

The MOC3021SVM is a surface-mount triac output optocoupler from onsemi's MOC series. It features a single channel with a phototriac output and lacks zero-crossing circuitry. Key electrical parameters include a maximum forward voltage of 1.5V, a maximum input current of 60mA, and an isolation voltage of 5300Vrms. The device supports a peak off-state voltage (VDRM) of 400V. It operates within a temperature range of -40°C to +85°C and is housed in a 6-pin SMD-DIP package.

Triac, SCR Output Optoisolators Feature Summary

• Surface-mount packaging for automated assembly
• Triac output without zero-crossing detection
• High isolation voltage capability

Triac, SCR Output Optoisolators Applications

• AC power switching control
• Solid state relay drivers
• Industrial motor control interfaces

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix 'SVM' against the manufacturer datasheet to confirm the exact pinout and tape-and-reel specifications. Ensure the selected component matches the required 400V blocking voltage and non-zero-crossing functionality for the target AC load application. Cross-reference the 6-pin SMD-DIP footprint dimensions with the PCB layout guidelines provided in the official documentation.

Triac, SCR Output Optoisolators Selection Notes

Select this component when a non-zero-crossing triac driver is required for random phase firing applications. The 400V output rating suits lower voltage AC loads. Consider the 5300Vrms isolation for safety-critical circuits. Verify that the surface-mount package fits the assembly constraints compared to through-hole alternatives like the standard DIP version.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC series of optotriacs designed for driving triacs and SCRs. It provides galvanic isolation between low-voltage control logic and high-voltage AC power stages. The MOC3021 variant specifically excludes zero-crossing circuitry, allowing for phase-angle control rather than soft-switching at the voltage zero point.

Triac, SCR Output Optoisolators Replacement Considerations

Compatible substitutes include other non-zero-crossing triac output optocouplers such as the MOC3021SM or MOC3023M, provided they match the 6-pin SMD-DIP package and 400V/5300Vrms ratings.