MOC3083

Triac, SCR Output Optoisolators Overview

The MOC3083 is a zero-crossing triac driver optocoupler featuring a 6-pin DIP package. It provides an isolation voltage of 5,000Vrms and supports a peak repetitive off-state voltage (VDRM) of 800V. The device exhibits a high static dv/dt rating of 1,500V/µs. Electrical parameters include a forward current of 20mA, RMS output current of 1A, and power dissipation of 250mW. Operating temperature ranges from -40°C to +100°C.

Triac, SCR Output Optoisolators Feature Summary

• Zero-crossing detection circuitry for reduced electrical noise
• High isolation voltage capability between input and output
• Robust off-state voltage handling with high dv/dt immunity

Triac, SCR Output Optoisolators Applications

• AC motor drivers
• AC motor starters
• Solid state relays
• Lighting control systems

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix against official Lite-On documentation to confirm pinout compatibility and package type. Ensure the selected variant matches the required insulation class and safety certifications such as UL or VDE. Confirm that the zero-crossing feature aligns with the application's noise sensitivity requirements before finalizing procurement.

Triac, SCR Output Optoisolators Selection Notes

Select this component for applications requiring galvanic isolation and low-noise switching of AC loads. The zero-crossing function minimizes electromagnetic interference during turn-on. Consider the 800V blocking voltage for standard mains applications. Verify thermal management needs based on the 250mW power dissipation limit in the operating environment.

Triac, SCR Output Optoisolators Part Context

The MOC3083 belongs to the MOC308x series of triac output optoisolators manufactured by Lite-On. This series includes variants with different packages and suffixes, such as MOC3083M for wide lead spacing. These devices are designed for industrial control applications requiring reliable isolation and precise timing control.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitutes include MOC3083M and MOC3083S-TA1. Verify pin compatibility and package dimensions when substituting between through-hole and surface-mount variants.