VOT8121AG

Overview

The VOT8121AG is a single-channel Triac output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an isolation voltage of 5300Vrms and supports an off-state voltage of 800V. The device operates within a temperature range of -55°C to +110°C and utilizes a DIP-4 through-hole package. Key electrical parameters include a maximum RMS on-state current of 100mA, a typical holding current of 250µA, and a forward voltage of 1.2V. It lacks zero-crossing circuitry and carries cUL, UR, and VDE certifications.

Feature Summary

• Provides high-voltage isolation with a 5300Vrms rating for safe signal transmission between isolated circuits.
• Features a robust Triac output capable of handling 800V off-state voltage and 100mA RMS current.
• Designed for wide operating temperatures ranging from -55°C to +110°C for industrial reliability.
• Includes international safety certifications including cUL, UR, and VDE for global compliance.

Applications

• Solid-state relay (SSR) driver circuits
• Motor control interfaces
• Industrial automation systems

Procurement Notes

Verify the specific suffix and package type when ordering, as Vishay offers both surface mount (AM-VT) and through-hole (AG) variants within the VOT8121 family. Confirm that the DIP-4 package matches your PCB footprint requirements. Ensure the selected variant meets the required isolation voltage and certification standards for your target market. Cross-reference datasheet revisions to confirm pinout consistency if replacing older components.

Selection Notes

Select this component when a through-hole Triac output optocoupler with high isolation voltage is required. It is suitable for applications needing non-zero-crossing triggering. Compare against the VOT8121AM-VT if surface mount technology is preferred instead of DIP packaging. Ensure the 100mA RMS current rating suffices for the load being driven. Verify that the absence of zero-crossing detection aligns with the application's switching requirements.

Part Context

The VOT8121AG belongs to the VOT8121 series of Triac output optocouplers from Vishay. This series is designed for general-purpose AC power switching applications. The AG suffix denotes the through-hole DIP-4 package, distinguishing it from the AM surface-mount variants. The series shares core electrical characteristics but differs in physical form factor and mounting style.

Replacement Considerations

• VOT8121AM-VT

FAQ

Does the VOT8121AG include a zero-crossing circuit?

No, the VOT8121AG does not include a zero-crossing circuit; it triggers immediately upon input signal activation.

What is the maximum RMS on-state current for this device?

The maximum continuous RMS on-state current (It(RMS)) is 100 mA.