FQD5N30TF

Single FETs, MOSFETs Overview

The FQD5N30TF is an N-Channel enhancement mode power MOSFET manufactured by onsemi, formerly Fairchild Semiconductor. It utilizes proprietary QFET technology tailored for high efficiency switch-mode power supplies and commutation modes. The device features a drain-source voltage (Vdss) of 300 V and a continuous drain current (Id) of 5.5 A at case temperature. It is housed in a surface-mount TO-252AA (DPAK) package with a maximum power dissipation of 2.5 W at ambient temperature and 50 W at case temperature.

Single FETs, MOSFETs Feature Summary

• Utilizes advanced QFET technology optimized for avalanche performance and commutation modes.
• Designed specifically for high-efficiency switch-mode power supply applications.
• Features robust thermal characteristics suitable for compact surface-mount designs.

Single FETs, MOSFETs Applications

• High efficiency switch-mode power supplies
• General purpose switching applications
• Commutation mode circuits

Single FETs, MOSFETs Procurement Notes

Verify the manufacturer designation carefully, as the component was originally developed by Fairchild Semiconductor and is now produced under the onsemi brand. Confirm the specific datasheet version to ensure alignment with legacy specifications. Check part status indicators, as older Fairchild-branded inventory may be marked obsolete or have limited availability compared to current production runs.

Single FETs, MOSFETs Selection Notes

Select this component when a 300 V rating is required for high-voltage switching tasks. The TO-252AA package offers a balance between thermal performance and board space efficiency. Ensure the gate drive voltage aligns with the specified threshold requirements for optimal Rds(on) performance. Consider the thermal derating curves if operating near the maximum junction temperature limits.

Single FETs, MOSFETs Part Context

This device belongs to the QFET family of power MOSFETs, which are engineered to provide superior reliability and performance in power conversion systems. The transition from Fairchild Semiconductor to onsemi represents a continuation of this established product line, maintaining the same core technological advantages and application focus for industrial and consumer power electronics.

Single FETs, MOSFETs Replacement Considerations

Direct substitutes include other 300 V N-Channel MOSFETs in the TO-252AA package with comparable current ratings. Verify pinout compatibility and thermal resistance values before substitution. Cross-reference with onsemi's current portfolio for equivalent performance metrics if sourcing new manufacturing runs.