The BVA3143 from BeRex, Inc. is a RF Amplifier with Frequency 3.3 to 3.8 GHz, Gain 37.2 to 42.2 dB, Noise Figure 3.9 dB, Output Power 26.2 dBm, Output Power 0.42 W. Tags: Surface Mount, Power Amplifier, Digital Variable Gain Amplifier, Gain Block. More details for BVA3143 can be seen below.