The BZT-19002120-120828-101315 from B&Z Technology is a RF Amplifier with Frequency 19 to 21.2 GHz, Gain 28 to 31 dB, Gain Flatness ±1 dB, Noise Figure 1.2 dB, Output Power 8 to 9 dBm. Tags: Low Noise Amplifier. More details for BZT-19002120-120828-101315 can be seen below.