The HE331C from BOWEI Integrated Circuits is a RF Amplifier with Frequency 10 to 500 MHz, Gain 16 to 17 dB, Gain Flatness ±0.5 dB, Noise Figure 2.7 to 3 dB, Output Power -2 dBm. Tags: Drop-In, Power Amplifier. More details for HE331C can be seen below.