8.4 mOhm Rds(on) at 10 V — the conduction loss number
The IRF1018EPBF: The 8.4 mOhm max on-resistance at Vgs=10 V, 47 A sets the conduction loss floor for the design.
175°C junction — military-temp headroom
The -55°C to 175°C operating junction temperature range covers avionics power supplies, actuator drives, downhole instrumentation, and engine-bay DC-DC converters.
The through-hole TO-220AB package is a standard stock item across multiple distributor channels, so lead time is typically a few weeks for production volumes.
