The BZ-00400500-502020-152020 from B&Z Technology is a RF Amplifier with Frequency 400 MHz to 5 GHz, Gain 20 to 23 dB, Gain Flatness ±1.5 dB, Noise Figure 4.5 to 5 dB, Output Power 20 to 22 dBm. Tags: Power Amplifier. More details for BZ-00400500-502020-152020 can be seen below.