MOC3052S

Triac, SCR Output Optoisolators Overview

The MOC3052S is a Triac and SCR output optocoupler manufactured by Lite-On Inc. It features a surface-mount SMD-6 package with one channel. The device provides an isolation voltage of 5000 Vrms and supports a maximum forward current of 30 mA with a typical forward voltage of 1.2 V. It has a power dissipation rating of 330 mW and operates within a temperature range starting at -25°C. The output type is phototriac, and it includes a zero-crossing circuit for noise reduction.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing circuit to minimize electromagnetic interference during switching
• High insulation voltage capability between input and output circuits
• Optical coupling via AlGaAs infrared LED and phototriac for signal isolation

Triac, SCR Output Optoisolators Applications

• AC motor drive control systems
• Solid-state relay applications
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix TA against the official Lite-On datasheet to confirm pinout compatibility and packaging specifications. Ensure that the zero-crossing feature requirement aligns with the MOC3052S variant rather than non-zero-crossing alternatives like the MOC3052. Cross-reference the SMD-6 footprint dimensions with your PCB design guidelines before finalizing procurement orders.

Triac, SCR Output Optoisolators Selection Notes

Select the MOC3052S when surface-mount assembly is required for AC load control applications. This component is suitable for isolating low-voltage control logic from high-voltage AC lines up to 600V. Consider the thermal management requirements given the 330 mW power dissipation limit. Verify that the operating temperature range meets the environmental conditions of the target application.

Triac, SCR Output Optoisolators Part Context

The MOC3052S belongs to the MOC3052 series of Triac driver output photocouplers from Lite-On. It is designed for general-purpose AC switching applications where electrical isolation is critical. The series offers variants in both DIP and SMD packages, with the SMD version facilitating automated assembly processes. It serves as a key interface component between microcontrollers and power triacs or SCRs.

Triac, SCR Output Optoisolators Replacement Considerations

• MOC3052M (DIP package, no zero-crossing)
• MOC3052 (DIP package, no zero-crossing)