The BG15A from BeRex, Inc. is a RF Amplifier with Frequency 50 MHz to 4 GHz, Gain 16.6 to 21.5 dB, Noise Figure 2.9 to 3.3 dB, Output Power 15.3 to 18.3 dBm, Output Power 0.03 to 0.07 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for BG15A can be seen below.