60 V, 95 A N-channel — what this TO-220 MOSFET delivers
The Infineon IRFB7545PBF is an N-channel MOSFET from the HEXFET and StrongIRFET series, built for high-current switching in a through-hole TO-220-3 package. The 5.9 mOhm on-resistance at 57 A means conduction losses stay low enough that a modest heatsink on the TO-220 tab keeps the junction within the -55°C to 175°C operating range, even in a motor-drive or power-supply rail where the current is continuous.
Gate drive and switching — sizing the driver
The gate charge totals 110 nC at 10 V gate drive, with a recommended drive voltage window of 6 V to 10 V for minimum on-resistance. A gate driver delivering 1 A peak will switch this MOSFET in under 200 ns; a 100 mA logic-level output will be too slow and risk linear-mode heating during the transition. Input capacitance Ciss is 4010 pF at 25 V drain bias — the Miller plateau region is where the driver spends most of its switching energy, so the driver's sink current capability matters more than its source current for turn-off speed.
Through-hole package — field-swappable without a hot-air station
The TO-220-3 through-hole package means a standard soldering iron and solder sucker are all you need to swap this part on site. No hot-air rework station, no preheater — just clear the board, wick the pads, and drop the new device in. The tab is the drain, and the gate is the left pin when the part faces you with the tab to the back. The 125 W power dissipation at case temperature is the thermal design limit — in practice, the junction-to-case thermal resistance and the heatsink's thermal resistance set the real continuous current. A 5°C/W heatsink keeps the junction below 125°C at 95 A with 5.9 mOhm Rds(on).
The 175°C Tj max is the absolute ceiling; continuous operation above 150°C Tj accelerates the bond-wire fatigue rate.
Sourcing — quoted to order, no stock-holding claim
Sourced through independent distribution channels. No official second-source or direct replacement is listed on the Infineon cross-reference; the IPD50R950CEAUMA1 is a 500 V CoolMOS surface-mount part that is not a functional substitute for this 60 V through-hole device.