The HEM554D from BOWEI Integrated Circuits is a RF Amplifier with Frequency 2.7 to 3 GHz, Gain 23 to 24 dB, Gain Flatness ±0.5 dB, Noise Figure 1.1 to 1.3 dB, Output Power 8 to 9 dBm. Tags: Drop-In, Low Noise Amplifier. More details for HEM554D can be seen below.