BUY STD3NA50 https://www.utsource.net/itm/p/5206924.html
N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTOR
Package: SOT252 (ST) Description: N-channel enhancement mode field-effect transistor Features: - Low on-state resistance - High switching speed - Low gate charge - High avalanche energy - High current capability Application: - Power switching - Motor control - Lighting control - DC-DC converters - Load switching (For reference only)