The BLC9G20LS-120VT from Ampleon is a RF Transistor with Frequency 1.805 to 1.995 GHz, P1dB 50.7 dBm, Duty_Cycle 0.1, Power Gain (Gp) 17.5 to 18.5 dB, Input Return Loss -14 to -9 dB. Tags: Surface Mount. More details for BLC9G20LS-120VT can be seen below.