The HE321D from BOWEI Integrated Circuits is a RF Amplifier with Frequency 10 MHz to 1 GHz, Gain 18 to 19.5 dB, Gain Flatness ±0.5 to 1 dB, Noise Figure 3 to 3.5 dB, Output Power 1.5 dBm. Tags: Drop-In, Power Amplifier. More details for HE321D can be seen below.