The BZ-00500400-131330-152020 from B&Z Technology is a RF Amplifier with Frequency 500 MHz to 4 GHz, Gain 26 to 29 dB, Gain Flatness ±1.8 dB, Noise Figure 1.1 to 1.5 dB, Output Power 25 dBm. Tags: Low Noise Amplifier. More details for BZ-00500400-131330-152020 can be seen below.