MOC3033

Triac, SCR Output Optoisolators Overview

The MOC3033 is a zero-crossing triac output optocoupler manufactured by Isocom Components. It integrates an aluminum gallium arsenide infrared emitting diode with a monolithic silicon detector that functions as a triac driver. The device provides electrical isolation of 5000Vrms for one channel. It features a peak forward current of 1.5A and a repetitive peak off-state voltage of 400V. The unit operates within a temperature range of -40°C to 100°C and is available in a 6-pin DIP package.

Triac, SCR Output Optoisolators Feature Summary

• Zero-crossing detection capability for reduced electromagnetic interference during AC switching
• Integrated AlGaAs infrared LED coupled with a monolithic silicon triac detector
• High isolation voltage rating suitable for industrial control applications

Triac, SCR Output Optoisolators Applications

• Solid state relays
• AC motor speed controls
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify the manufacturer designation on the component marking, as Isocom Components may supply equivalents or rebranded units from other foundries. Confirm the specific suffix indicates the standard DIP package variant. Ensure the datasheet matches the required isolation voltage and zero-crossing timing specifications for your circuit design before finalizing procurement.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to minimize inrush current and noise in AC loads. Compare the 5000Vrms isolation rating against system safety requirements. Verify the 400V peak off-state voltage meets the maximum line voltage expectations. Consider the 6-pin DIP form factor for through-hole assembly processes.

Triac, SCR Output Optoisolators Part Context

This device belongs to the family of zero-crossing triac optocouplers designed for AC power control. It serves as a interface between low-voltage logic circuits and high-voltage AC loads. The integration of the driver and detector simplifies PCB layout compared to discrete solutions.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.