400 V, 9 A, 550 mOhm — the switching load it carries
Housed in a TO-263-3 (D²Pak) surface-mount package with the tab as the drain connection. The D2PAK footprint requires a copper pad under the tab for the thermal path — the datasheet's 110 W power dissipation rating assumes that pad is soldered to a 1-inch-square copper island on a 2-layer board.
