Small-signal N-channel switch for general-purpose low-current loads
The SN7002NH6433XTMA1: Infineon SIPMOS N-channel MOSFET, 60 V drain-source, 200 mA continuous drain, SOT-23-3 package. 5 Ohm max on-resistance at 500 mA with 10 V gate drive; 360 mW package dissipation at 25°C.
60 V blocking and 150°C junction — industrial and automotive temperature reach
Gate threshold voltage is 1.8 V max at 26 µA drain current. For a saturated switch with minimum voltage drop, drive the gate with 5 V or more.
Gate drive and switching — low Qg suits GPIO-driven loads
Total gate charge is 1.5 nC at 10 V, and input capacitance is 45 pF at 25 V drain-source. A microcontroller GPIO with 10 mA drive capability can switch this FET at several MHz without a dedicated gate driver — the switching loss is dominated by the load current and drain voltage, not the gate drive circuit.
