Onsemi, MMBTH81, Transistors, Bipolar (BJT) Transistors

 MMBTH81 Series 20 V CE Breakdown .05 A PNP RF Transistor - SOT-23

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--bipolar-transistors/mmbth81-onsemi-8132185