VOT8121AB-T2

Overview

The VOT8121AB-T2 is a single-channel Triac output optocoupler manufactured by Vishay Semiconductor Opto Division. It features a high isolation voltage of 5300Vrms and supports an on-state RMS current (It(RMS)) of 100 mA with a maximum DC forward current (If) of 50 mA. The device operates within a temperature range of -55°C to +110°C and utilizes a 4-SMD surface-mount package. Key electrical characteristics include a blocking voltage of 800 V, a minimum static dV/dt of 1 kV/µs, and a typical forward voltage (Vf) of 1.2 V.

Feature Summary

• High insulation strength rated at 5300Vrms for robust circuit isolation
• Capable of handling 100 mA RMS load current in the output stage
• Engineered with high static dV/dt immunity to prevent false triggering
• Designed for wide industrial operating temperatures from -55°C to +110°C

Applications

• Solid state relay modules requiring high isolation
• Industrial motor control circuits
• Power supply feedback loops
• AC load switching applications

Procurement Notes

Verify the specific suffix 'T2' against the manufacturer's datasheet to confirm the reel packaging configuration and pinout orientation. Ensure that the required isolation voltage rating of 5300Vrms aligns with your safety certification standards, such as UL or VDE, before finalizing component selection.

Selection Notes

Select this component when a non-zero-crossing Triac output is required for phase-angle control applications. The 4-SMD package is suitable for automated surface-mount assembly processes. Consider the 100 mA current limit when designing for low-power AC loads, ensuring the thermal management strategy accommodates the specified junction temperature range.

Part Context

This part belongs to the VOT8121 family of optocouplers, which are designed for general-purpose isolation tasks. The 'AB' designation typically indicates specific insulation system certifications and material properties defined by Vishay. The T2 suffix denotes the specific tape-and-reel packaging format used for high-volume manufacturing integration.

Replacement Considerations

The VOT8121AB-T3 is a documented alternative within the same product family offering identical electrical performance but potentially differing in packaging or certification details. Verify pin compatibility and isolation ratings before substitution.