The BGU8103UK from NXP Semiconductors is a RF Amplifier with Frequency 1.559 to 1.61 GHz, Gain 18.5 to 20 dB, Noise Figure 0.80 dB, Output Power -17 dBm, Output Power 0.000019 W. Tags: Surface Mount, Low Noise Amplifier. More details for BGU8103UK can be seen below.