The BZ-04000900-451735-102020 from B&Z Technology is a RF Amplifier with Frequency 4 to 9 GHz, Gain 35 to 37 dB, Gain Flatness ±1 dB, Noise Figure 2 to 4.5 dB, Output Power 17 to 18 dBm. Tags: Power Amplifier. More details for BZ-04000900-451735-102020 can be seen below.