HEXFET N-channel in an SOIC-8 — what you get
The Infineon SI4410DYPBF is a 30 V, 10 A N-channel MOSFET from the HEXFET series, built on a planar stripe technology.
The 13.5 mΩ Rds(on) at Vgs = 10 V is the figure to size for conduction losses in a switching regulator or load switch. At 10 A continuous drain current, that resistance translates to about 1.35 W of dissipation in the channel alone — the package's 2.5 W power rating at ambient leaves headroom, but the SOIC-8's thermal impedance means the PCB copper area must handle the heat. The drive voltage range of 4.5 V to 10 V means the part can be driven from a 5 V logic rail, but the Rds(on) will be higher at 4.5 V than at 10 V — check the typical curve if you are running near the current limit at the lower drive level. A gate driver with at least 1 A peak current will switch the gate in tens of nanoseconds; slower drive edges increase switching loss but reduce EMI. Input capacitance of 1585 pF at 15 V Vds is typical for this class — it sets the gate-driver output impedance requirement for a given rise time.
The 150°C maximum junction allows operation in sealed enclosures with limited airflow, provided the board layout keeps the junction within the SOA at the expected load current.
