The BW552 from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 2 to 6 GHz, Gain 26 dB, Gain Flatness ±0.8 dB, Noise Figure 3.4 dB, Output Power 21 to 22 dBm. Tags: Surface Mount, Gain Block, Driver Amplifier. More details for BW552 can be seen below.