The BGA123N6 from Infineon Technologies is a RF Amplifier with Frequency 1.55 to 1.615 GHz, Power Gain 16.7 to 20.7 dB, Noise Figure 0.8 to 1.2 dB, Input Power 25 dBm, Input Power 0.316 W. Tags: Surface Mount, Low Noise Amplifier. More details for BGA123N6 can be seen below.