On-resistance and gate drive — what the 35 mOhm and 4.5 V / 10 V drive mean
The STD25NF10LA: At 10 V gate drive with 12.5 A drain current the Rds(on) is 35 mOhm maximum. The drive voltage is specified at both 4.5 V and 10 V.
The 175°C maximum junction allows headroom in a high-ambient enclosure or when the part is dissipating close to its 100 W case-temperature power limit.
DPAK package — footprint and thermal path
The part comes in the TO-252-3 / DPAK surface-mount package with two leads and a tab. The DPAK footprint is standard, so the STD25NF10LA can drop into a board already laid out for a DPAK N-channel MOSFET without a layout change.