MOC3051VM

Triac, SCR Output Optoisolators Overview

The MOC3051VM is a single-channel Triac and SCR output optocoupler manufactured by onsemi. It integrates a Gallium Arsenide infrared emitting diode with a non-zero-crossing photoTriac, designed for random phase control of AC loads. The device provides electrical isolation via an insulation voltage of 4170 Vrms. Key electrical parameters include a maximum forward current of 60 mA, a peak gate trigger current of 15 mA, and a breakover voltage of 600 V. It operates within a temperature range of -40°C to +85°C and is housed in a PDIP-6 package.

Triac, SCR Output Optoisolators Feature Summary

• Random phase control capability without zero-crossing circuitry
• High static dv/dt rating for improved noise immunity
• Enhanced isolation performance with 4170 Vrms insulation voltage

Triac, SCR Output Optoisolators Applications

• Isolating low-voltage logic from 115 VAC line voltages
• Isolating low-voltage logic from 240 VAC line voltages
• Driving high-current Triacs or SCRs in industrial control systems

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and compliance status. Confirm that the component meets required safety certifications such as UL and VDE for the intended application. Check datasheet revisions to ensure compatibility with current design specifications. Validate the operating temperature range against environmental conditions. Ensure the supplier provides valid RoHS documentation.

Triac, SCR Output Optoisolators Selection Notes

Select this component when random phase firing is required rather than zero-crossing switching. Consider the 600 V breakover voltage limit for load compatibility. Evaluate the 15 mA peak gate trigger current to ensure sufficient drive strength. Compare the PDIP-6 package dimensions against PCB layout constraints. Assess the 4170 Vrms isolation requirement against system safety standards.

Triac, SCR Output Optoisolators Part Context

The MOC3051VM belongs to the MOC3051M series of Triac and SCR output optocouplers. It shares architectural similarities with the MOC3052M and MOC3053M, differing primarily in gate trigger current specifications. These devices utilize BCD technology to combine optical isolation with power switching capabilities. The series is designed for robust performance in AC power control applications.

Triac, SCR Output Optoisolators Replacement Considerations

The MOC3052VM is a direct functional substitute within the same family, distinguished by a lower peak gate trigger current of 10 mA compared to the MOC3051VM's 15 mA. Verify that the reduced trigger current of the replacement part remains sufficient for the specific load requirements before substitution.