The BGU7258 from NXP Semiconductors is a RF Amplifier with Frequency 4.9 to 5.925 GHz, Gain 11 to 16 dB, Gain Flatness +0.2 dB, Noise Figure 1.6 dB, Output Power -4 dBm. Tags: Surface Mount, Low Noise Amplifier. More details for BGU7258 can be seen below.