The BZP503CR1 from B&Z Technology is a RF Amplifier with Frequency 500 MHz to 3 GHz, Gain 30 dB, Gain Flatness ±1.5 dB, Noise Figure 0.15 to 0.22 dB, Output Power 1 dBm. Tags: Cryogenic Amplifier, Low Noise Amplifier. More details for BZP503CR1 can be seen below.