onsemi, MMBTA06LT1G, Transistors, Bipolar (BJT) Transistors

 MMBTA06L Series NPN 80 V 500 mA SMT Driver Transistor - SOT-23

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--bipolar-transistors/smmbta06lt1g-onsemi-8097919