BUY 2SC3739 https://www.utsource.net/itm/p/11276436.html
2SC3739 NPN Transistors(BJT) 60V 500mA/0.5A 400MHz 75~150 750mV/0.75V SOT-23/SC-59 marking B12 high-frequency amplifier switch
Description: 2SC3739 is a silicon NPN epitaxial planar type transistor manufactured by NEC. Features: Low collector-emitter saturation voltage High current gain High frequency operation High breakdown voltage High reliability Applications: High frequency amplifier Low frequency amplifier Switching applications (For reference only)