180 A N-channel — the BOM-fit tier for high-current switching
The 175°C junction temperature ceiling gives headroom for hot environments.
Package and thermal — the D²Pak tab carries the heat
The TO-263-7 (D²Pak) package has six leads plus a large exposed drain tab. Surface-mount assembly with the D²Pak is straightforward for a reflow line — the tab solders to the board pad, and the lead pitch is wide enough for visual inspection.
Comparing to the 55 V sibling — same current, higher voltage, higher on-resistance
The NP179N055TUK--AY is the closest functional peer: same 180 A continuous drain rating, same 175°C junction temperature, same TO-263-7 package, and it carries AEC-Q101 automotive qualification. The key parametric differences are the drain-source voltage (55 V vs 40 V), the on-resistance (1.75 mOhm vs 1.05 mOhm at 90 A, 10 V), and the gate charge (240 nC vs 297 nC at 10 V). If your design needs the higher voltage margin or automotive-grade qualification, the NP179N055TUK--AY is the part to evaluate. For a 40 V rail where lowest conduction loss matters, the NP180N04TUK--AY's 1.05 mOhm Rds(on) is the better fit.