The BZRW51B-17702120-131342-101315 from B&Z Technology is a RF Amplifier with Frequency 17.7 to 21.2 GHz, Gain 38 to 42 dB, Gain Flatness ±1 dB, Noise Figure 1.3 to 2 dB, Output Power 10 to 13 dBm. Tags: Low Noise Amplifier. More details for BZRW51B-17702120-131342-101315 can be seen below.