SI4542DY-T1-E3

Overview

The SI4542DY-T1-E3 is a P-channel MOSFET manufactured by Vishay Siliconix, utilizing TrenchFET technology. It is housed in an SOIC-8 surface-mount package and operates within a temperature range of -55°C to +175°C. The device features a drain-source voltage rating of -20V and a gate-source voltage limit of ±20V. Key electrical parameters include a maximum on-resistance (RDS(on)) of 6.5mΩ at VGS = -4.5V and ID = -12A. It supports a continuous drain current of -12A and a pulsed current of -48A, with a power dissipation capability of 2.9W in the specified package.

Feature Summary

• TrenchFET technology for optimized on-resistance and switching performance
• Enhanced avalanche ruggedness for robust operation
• Lead-free finish and halogen-free construction

Applications

• DC-DC converter circuits
• Load switch applications
• Power management modules

Procurement Notes

Verify the specific suffix 'T1' indicates reel packaging when sourcing. Confirm RoHS compliance status through official datasheets or manufacturer declarations. Ensure the component matches the exact part number to avoid pinout or parameter mismatches common within the SI45xx family.

Selection Notes

Select this component for low-side or high-side switching where low RDS(on) is critical. Compare thermal resistance values against PCB copper area constraints. Verify that the required current handling exceeds the continuous 12A rating under expected operating temperatures.

Part Context

This part belongs to the SI45xx series of Vishay Siliconix P-channel MOSFETs. It shares the SOIC-8 footprint with other variants like SI4544DY but differs in electrical ratings. The series is designed for general-purpose power switching applications requiring efficient heat dissipation in compact packages.

Replacement Considerations

Check for direct replacements such as SI4544DY-T1-E3 if higher current ratings are acceptable. Verify pin compatibility and thermal characteristics before substituting with parts from other manufacturers.