VO4254M

Overview

The VO4254M is a non-zero-crossing phototriac output optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates a Gallium Arsenide infrared LED optically coupled to a photosensitive TRIAC within a six-pin DIP package. The device provides an isolation voltage of 5300 Vrms and supports a maximum continuous output current of 300 mA. It operates with a peak forward current of 60 mA and features a low gate trigger current of 2 mA. The unit withstands a blocking voltage of 400 V and functions reliably across a temperature range from -55°C to +100°C.

Feature Summary

• Non-zero-crossing triac output for immediate load control
• High static dV/dt immunity to prevent false triggering
• Robust 5300 Vrms insulation barrier for safety isolation

Applications

• Solid-state relay circuits
• Motor speed control systems
• Lighting dimmer applications

Procurement Notes

Verify the specific suffix designation, as variations such as X006 or X007 may indicate different packaging formats like tubes or tape-and-reel. Confirm availability status directly with authorized distributors, as lead times and stock levels fluctuate based on production cycles. Ensure compliance with RoHS directives and check for any recent Product Change Notifications regarding material updates before finalizing procurement orders.

Selection Notes

Select this component when immediate phase-angle firing is required without zero-crossing delay. Compare the 400 V blocking voltage against circuit requirements; higher voltage variants like the VO4256 exist for more demanding loads. Verify that the 300 mA RMS output current meets the load specifications. Consider the DIP-6 through-hole package constraints if surface-mount alternatives are preferred for automated assembly processes.

Part Context

This part belongs to the VO425x series of high-speed, high-dV/dt phototriac optocouplers. The series utilizes GaAs IR LEDs for efficient optical coupling. The 'M' suffix typically denotes the standard PDIP-6 through-hole package variant, distinguishing it from surface-mount options like the VO4254D. These devices are engineered for reliable AC power switching in industrial and consumer electronics.

Replacement Considerations

The VO4256M serves as a direct functional substitute offering identical pinouts and features but with a higher 600 V blocking voltage rating. Other Vishay models in the same family share similar electrical characteristics and packaging options.