VOT8024AB-T

Overview

The VOT8024AB-T is a single-channel phototriac optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates a Gallium Arsenide infrared LED with a photosensitive zero-crossing triac output, housed in a compact SMD-4 surface-mount package. The device features an isolation voltage of 5300 Vrms and supports a maximum forward current of 50 mA with a forward voltage of 1.2 V. It operates within a temperature range of -55°C to +110°C and provides an off-state repetitive peak voltage (VDRM) of 800 V.

Feature Summary

• Integrates a GaAs IR LED with a photosensitive zero-crossing triac for precise AC load switching
• Provides high electrical isolation capability rated at 5300 Vrms between input and output circuits
• Designed for surface-mount assembly using a space-saving four-terminal SMD-4 package configuration

Applications

• Solid-state relays requiring zero-crossing switching capabilities
• AC motor control circuits for industrial automation
• Lighting control systems for phase-angle or zero-cross dimming applications

Procurement Notes

Verify the specific suffix designation when ordering, as packaging variants such as VT1 indicate different reel quantities compared to standard tape-and-reel configurations. Confirm RoHS compliance status through official manufacturer documentation prior to integration into regulated assemblies. Ensure the selected package variant matches the intended PCB footprint and automated placement requirements.

Selection Notes

Select this component for applications demanding high-voltage isolation and noise immunity in AC power control environments. The zero-crossing feature minimizes electromagnetic interference during turn-on, making it suitable for sensitive electronic loads. Evaluate the thermal management requirements based on the specified power dissipation limits and operating temperature range to ensure long-term reliability in enclosed designs.

Part Context

This device belongs to Vishay's family of Triac and SCR output optoisolators designed for robust AC switching applications. The VOT8024 series utilizes advanced semiconductor technology to achieve high isolation voltages while maintaining compact physical dimensions. These components are engineered to replace mechanical relays in modern electronics, offering longer operational lifespans and faster switching speeds without contact bounce issues.

Replacement Considerations

Direct replacements include the VOT8024AD which shares similar functional characteristics but may differ in package type or specific electrical tolerances. Verify pinout compatibility and isolation voltage ratings before substituting to ensure circuit integrity and safety compliance in existing designs.