VOFD343A-X018T

Overview

The VOFD343A-X018T is a single-channel MOSFET output optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates an AlGaAs LED with an integrated circuit and power output stage to function as a high-speed IGBT and MOSFET driver. The device provides rail-to-rail output capability and supports a peak output current of 4 A. Key electrical specifications include a maximum forward current of 25 mA, a typical forward voltage of 1.37 V, and a reverse voltage rating of 5 V. It offers an isolation voltage of 5000 Vrms and operates within a temperature range of -40°C to +125°C. The component features rise and fall times of 35 ns and is housed in a 6-SOIC stretched package.

Feature Summary

• Integrates an AlGaAs LED optically coupled to an IC with a power output stage for high-speed switching applications
• Provides rail-to-rail output capability suitable for driving IGBTs and MOSFETs
• Features high common-mode transient immunity to ensure signal integrity in noisy environments
• Includes comprehensive safety certifications including UL, VDE, and cUL for global compliance

Applications

• IGBT gate drive circuits in industrial motor drives
• MOSFET gate drive interfaces in power supply systems
• High-voltage isolation barriers in measurement equipment
• Solid-state relay outputs requiring fast switching speeds

Procurement Notes

Verify the specific suffix X018T to confirm the reel packaging configuration. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Confirm RoHS3 compliance status matches current regulatory requirements. Validate that the 6-SOIC stretched package dimensions align with the target PCB footprint design constraints.

Selection Notes

Select this component when a 4 A peak output current is required for direct gate driving. Choose this model over lower-current variants if higher switching speed and rail-to-rail output are necessary. Consider the 5000 Vrms isolation rating for applications demanding significant voltage separation between control and power stages. Evaluate the 6-SOIC stretched package for compatibility with existing surface-mount assembly processes.

Part Context

This part belongs to the VOFD34xA series of IGBT and MOSFET drivers from Vishay. The series is designed to provide robust isolation and high-speed performance for power electronics. The VOFD343A-X018T specifically denotes the 4 A output variant within this family, distinguishing it from lower-current counterparts like the VOFD341A.

Replacement Considerations

The VOFD341A-X018T is a related part within the same series but offers a 3 A peak output current instead of 4 A. Verify if the reduced current capacity meets the specific load requirements before substituting.