The PE2-55-4G8G-3R5-22-12-SFF from Quantic PMI (Planar Monolithics) is a RF Amplifier with Frequency 4000 to 8000 MHz, Gain 45 to 55 dB, Gain Flatness ± 1.5 dB, Noise Figure 3 to 3.5 dB, P1dB 20 dBm. Tags: Surface Mount, Low Noise Amplifier. More details for PE2-55-4G8G-3R5-22-12-SFF can be seen below.