Gate drive and switching profile
The STT4P3LLH6: Input capacitance is 639 pF at 25 V drain-source, keeping switching losses low in PWM applications up to several hundred kilohertz.
Thermal and package considerations
Maximum power dissipation is 1.6 W at 25 °C ambient on a standard FR-4 board; the junction temperature ceiling is 150 °C. The SOT-23-6 footprint requires careful PCB copper area for heat spreading if the load approaches the 4 A continuous rating. Gate-source threshold voltage is 2.5 V maximum at 250 µA drain current.
