What this 40 V, 100 A N-channel MOSFET brings to a power stage
The NP100N04PUK-E1-AY: The NP100N04PUK--AY is a 40 V, 100 A N-channel MOSFET in a TO-263 (D²Pak) surface-mount package, built on a standard MOSFET (Metal Oxide) process. Junction temperature is rated to 175°C, so it can sit in a hot engine bay or a cramped power supply without derating prematurely.
Gate drive and switching: what 120 nC Qg means for your driver
Gate charge is 120 nC at 10 V. Input capacitance is 7050 pF at 25 V drain-source. Drive voltage is specified at 10 V for both max and min Rds(on).
Package and mounting: TO-263 field-fit notes
On a rework station you can swap it with a hot-air tool if the board has enough copper to wick heat away from the tab. The tab must be soldered to a large copper pour for the 176 W case dissipation to mean anything; a two-layer board with minimal copper will thermal-throttle the part well below its rating. The part ships in Tape & Reel, so it is pick-and-place ready for volume assembly. Surface-mount means no through-hole alignment issues on the line.
Lifecycle and compliance: active production, RoHS3
No official successor or second-source is listed in the manufacturer's cross-reference, but the part is widely available through independent distribution.