The SPF5043Z from Qorvo is a RF Amplifier with Frequency 50 MHz to 4 GHz, Gain 12.9 dB, Noise Figure 0.8 dB, Output Power 22.7 dBm, Output Power 0.19 W. Tags: Surface Mount, Low Noise Amplifier, Gain Block. More details for SPF5043Z can be seen below.