The STP80N10F7: The 100 V Vdss rating gives a 25% derating margin against a typical 48 V or 72 V nominal rail, which is comfortable for most industrial and automotive-grade designs that see transient spikes up to 80 V. The 10 mOhm Rds(on) at 40 A, 10 V means the device dissipates roughly 16 W at full rated current — the 110 W power-dissipation limit in the TO-220 package provides adequate thermal headroom when mounted on a heatsink. Gate charge is 45 nC at 10 V, which keeps switching losses manageable for a 100 V, 80 A part; a gate driver capable of sourcing a few hundred milliamps will switch it cleanly at 50–100 kHz. The input capacitance of 3100 pF at 50 V Vds is moderate for this current class. The ±20 V maximum gate-source voltage gives margin above the 10 V recommended drive level.
The STP80N10F7 is marked Obsolete by STMicroelectronics. This means the manufacturer has stopped production and no further factory orders are accepted.
Package and mounting — TO-220 through-hole
The STP80N10F7 comes in a standard TO-220-3 through-hole package, with the metal tab forming the drain connection.