The 2N2222AUBx from STMicroelectronics is a RF Transistor with Duty_Cycle 0.015, Gain 35 to 300 dB(DC Current Gain), Small Signal Gain 2.5 dB, Voltage - Collector Base (Vcbo) 75 V, Voltage - Collector Emitter (Vceo) 50 V. Tags: Surface Mount. More details for 2N2222AUBx can be seen below.