100 V, 42 A N-channel HEXFET — what it is and where it fits
The IRFP150NPBF is an N-channel power MOSFET from Infineon's HEXFET series, rated for 100 V drain-to-source and 42 A continuous drain current at 25°C case temperature. It comes in a through-hole TO-247-3 package (TO-247AC variant) and is built with planar stripe technology. Typical applications include switch-mode power supplies, DC-DC converters, motor drives, and battery management circuits where 100 V blocking and moderate current are needed.
Key ratings and what they mean for the BOM
On-resistance is 36 mOhm maximum at 23 A with a 10 V gate drive. That conduction loss figure drives heatsink sizing and efficiency calculations. Gate charge is 110 nC at 10 V, which sets the gate-driver power requirement and switching speed capability. The junction temperature range of -55°C to 175°C covers military and industrial environments — avionics, downhole tools, outdoor telecom cabinets, and engine-bay electronics all fall within this window.
Package and mounting
TO-247-3 through-hole package (supplier device package TO-247AC). The large tab is the drain. Mount with a screw and thermal pad or mica insulator; torque to the manufacturer's recommended value for the package.
Lifecycle and sourcing
The IRFP150NPBF is an active, current-production part with ROHS3 compliance. No last-time-buy or obsolescence notice is in effect.