BUY BF621 https://www.utsource.net/itm/p/11289328.html
BF621 PNP transistors(BJT) -300V -50mA 60MHz 50 -800mV/-0.8V SOT-89/SC-62 marking DF low current/high voltage
Description: The BF621 is a N-channel enhancement mode Field Effect Transistor (FET) designed for low voltage, low current applications. Features: Low drain-source on-resistance Low gate-source threshold voltage Low gate charge Fast switching ESD protection RoHS compliant Applications: Load switch Battery protection DC-DC converter General purpose switching (For reference only)