The BZ-01000400-252020-152020-STOCK-SN-12603 from B&Z Technology is a RF Amplifier with Frequency 1 to 4 GHz, Gain 20 to 22 dB, Gain Flatness ±1.5 dB, Noise Figure 2.3 to 2.5 dB, Output Power 20 to 21 dBm. Tags: Power Amplifier. More details for BZ-01000400-252020-152020-STOCK-SN-12603 can be seen below.