VO4154H

Overview

The VO4154H is a single-channel Triac and SCR output optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates an AlGaAs infrared emitting diode with a zero-crossing detection circuit and a Triac output stage, housed in a 6-pin DIP package. The device provides high isolation voltage of 5300 Vrms, ensuring safe operation in high-voltage environments. Key electrical parameters include a maximum continuous output current of 300 mA, a peak repetitive off-state voltage (VDRM) of 400 V, and a forward current (If) rating of 60 mA. The unit operates within a temperature range of -55°C to +100°C.

Feature Summary

• Integrates a zero-crossing detection circuit for low electromagnetic interference switching
• Provides high insulation voltage capability for safety isolation
• Combines an infrared LED emitter with a Triac output stage in a single package

Applications

• Solid-state relays
• Motor control circuits
• General-purpose AC load switching

Procurement Notes

Verify the specific suffix designation when ordering, as packaging and availability may vary between variants such as the H and D series. Confirm that the component meets required regulatory standards for your region. Check current manufacturing status, as some versions may be obsolete or subject to change without notice. Ensure compatibility with existing PCB footprints before finalizing procurement decisions.

Selection Notes

Select this component when zero-crossing functionality is required to minimize electrical noise during AC load switching. The 5300 Vrms isolation rating makes it suitable for applications demanding robust safety barriers. Consider the 400 V peak off-state voltage limit when designing for higher voltage mains applications. The DIP-6 package facilitates through-hole mounting for prototyping or industrial enclosures.

Part Context

This device belongs to the VO415x series of optocouplers from Vishay, designed specifically for AC power control applications. The series emphasizes reliability and safety in industrial and consumer electronics. The VO4154H variant specifically utilizes a DIP-6 package, distinguishing it from surface-mount alternatives like the VO4154D. It serves as a critical interface component between low-voltage control logic and high-voltage AC loads.

Replacement Considerations

The VO4154H-X007T variant is listed as obsolete. Potential substitutes include the VO4256D-X006, which offers similar Triac output characteristics but in a surface-mount package. Verify pinout compatibility and isolation voltage ratings when considering alternative part numbers from the same manufacturer or other vendors.