MOC3042SM&TR

Triac, SCR Output Optoisolators Overview

The MOC3042SM&TR is a surface-mount DIP-6 zero-crossing triac output optocoupler from Isocom Components. It features an internal phototriac driver for AC load control with inherent zero-voltage switching to minimize EMI. Key electrical parameters include a peak repetitive off-state voltage of 400V, isolation voltage of 5.3kVrms (or 7500Vpk), and a minimum static dV/dt of 600V/µs. The device operates within a temperature range of -40°C to 100°C.

Triac, SCR Output Optoisolators Feature Summary

• Zero-crossing detection circuitry ensures low electromagnetic interference during AC load switching.
• Integrated phototriac driver provides direct interface capability for power triacs or SCRs.
• High isolation voltage rating ensures robust safety barrier between input and output circuits.

Triac, SCR Output Optoisolators Applications

• Solid state relay modules
• AC motor speed controllers
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix 'SM&TR' against official manufacturer documentation to confirm surface-mount packaging and tape-and-reel delivery format. Ensure compliance with RoHS and SVHC standards as indicated in public component records before finalizing procurement specifications.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing functionality is required to reduce electrical noise in AC applications. The surface-mount package suits automated assembly processes. Verify that the 400V off-state voltage meets the peak line voltage requirements of the target application circuit.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC304 series of zero-crossing triac output optoisolators. It serves as a bridge between low-voltage logic circuits and high-voltage AC power stages, offering galvanic isolation while simplifying drive requirements for external power triacs.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitutes include the MOC3041XSM and MOC3043 variants within the same family. These parts share similar zero-crossing characteristics but may differ in peak off-state voltage ratings or pin configurations; verify datasheet compatibility before substitution.

Triac, SCR Output Optoisolators FAQ

What is the operating mode of the MOC3042SM&TR?

It operates in zero-crossing mode, turning on the internal phototriac only when the AC line voltage is near zero.

What is the peak repetitive off-state voltage?

The peak repetitive off-state voltage is rated at 400V.