VOT8121AM-VT2

Overview

The VOT8121AM-VT2 is a single-channel optoisolator featuring a phototriac output, manufactured by Vishay Semiconductor Opto Division. It provides an isolation voltage of 3750Vrms and supports a maximum on-state current (It RMS) of 100 mA with a blocking voltage of 800 V. The device operates without a zero-crossing circuit, offering a typical turn-on time of 30µs and a minimum static dV/dt rating of 1kV/µs. It functions within a temperature range of -55°C to 110°C or 115°C depending on the specific datasheet version. Packaged in a 4-SOP surface-mount configuration, it accepts a maximum DC forward current of 50 mA.

Feature Summary

• High isolation capability with 3750Vrms dielectric strength between input and output circuits.
• Robust switching performance characterized by a fast 30µs turn-on time and high noise immunity.
• Capable of handling significant load currents with a 100 mA continuous on-state rating.
• Designed for general-purpose AC load control applications requiring electrical isolation.

Applications

• Solid-state relays for AC load switching
• Motor control circuits
• Lighting control systems

Procurement Notes

Verify the exact suffix against the manufacturer's latest documentation, as variations such as VT, VT2, and T2 exist within the VOT8121 family. Confirm the specific operating temperature range (-55°C to 110°C vs 115°C) required for your design. Ensure the 4-SOP package dimensions match your PCB footprint constraints. Cross-reference certification requirements (cURus, VDE) with your target market regulations before finalizing procurement.

Selection Notes

Select this component when a non-zero-crossing triac output is required for phase-angle control applications. The 100 mA current rating suits low-power AC loads. Compare the 3750Vrms isolation against higher-voltage variants like the VOT8121AB if system safety standards demand greater creepage distances. Consider the 4-SOP package for automated surface-mount assembly processes.

Part Context

This part belongs to the VOT8121 series of Triac and SCR output optocouplers from Vishay. It shares core electrical characteristics with siblings like the VOT8121AM and VOT8121AB, differing primarily in packaging and isolation voltage ratings. The series is designed for industrial and consumer applications requiring reliable AC switching with galvanic isolation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with direct replacements by matching the 4-SOP package, 3750Vrms isolation, and 100 mA current specifications.