The BW278 from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 4 to 8 GHz, Gain 22 dB, Gain Flatness ±0.5 dB, Noise Figure 1 dB, Output Power 8 to 10 dBm. Tags: Surface Mount, Low Noise Amplifier. More details for BW278 can be seen below.