40 V, 42 A automotive N-channel — the conduction-loss ceiling
The Infineon AUIRFR4104TRL is an automotive-grade N-channel HEXFET® MOSFET rated for 40 V drain-source and 42 A continuous switching current.
175°C junction — built for under-hood duty
The -55°C to 175°C junction temperature range qualifies this part for automotive under-hood environments where ambient temperatures can exceed 125°C. The 89 nC typical gate charge at 10 V means the gate driver must source about 0.9 A peak to switch at 100 kHz — a standard automotive gate-driver IC handles that without extra buffering.
