The PSA4-5043+ from Mini Circuits is a RF Amplifier with Frequency 50 MHz to 4 GHz, Gain 18.4 dB, Noise Figure 0.75 dB, Output Power 48 to 18.8 dBm, Output Power 63.1 to 0.08 W. Tags: Surface Mount, Low Noise Amplifier. More details for PSA4-5043+ can be seen below.