The HE387D from BOWEI Integrated Circuits is a RF Amplifier with Frequency 100 to 700 MHz, Gain 21 to 22 dB, Gain Flatness ±0.6 to 1 dB, Noise Figure 3.8 to 4.5 dB, Output Power 20 to 21 dBm. Tags: Drop-In, Power Amplifier. More details for HE387D can be seen below.