The HE393B from BOWEI Integrated Circuits is a RF Amplifier with Frequency 10 to 500 MHz, Gain 17 to 18 dB, Gain Flatness ±0.5 dB, Noise Figure 4 to 4.5 dB, Output Power 16.5 to 17 dBm. Tags: Drop-In, Power Amplifier. More details for HE393B can be seen below.