100V N-channel HEXFET in a TO-251 IPAK
The Infineon IRLU120NPBF is an N-channel enhancement-mode MOSFET from the HEXFET family, built on a planar stripe DMOS process.
Gate drive and switching profile
The gate threshold voltage is specified at 2 V maximum with Id = 250 µA, and the recommended drive voltage range spans 4 V to 10 V for minimum on-resistance. Total gate charge is 20 nC at Vgs = 5 V, and input capacitance Ciss is 440 pF at Vds = 25 V — numbers that keep the gate drive energy low enough for a simple bipolar or logic-level driver in a 50–200 kHz switching stage. Maximum power dissipation is 48 W at case temperature, which sets the thermal budget for the heatsink or PCB copper area under the IPAK tab. The 185 mOhm Rds(on) at 10 V means conduction loss at 6 A is about 6.7 W — well within the package capability with adequate thermal management.
