The YSF-2151+ from Mini Circuits is a RF Amplifier with Frequency 900 MHz to 2.15 GHz, Gain 20 dB, Gain Flatness ± 0.4 dB, Noise Figure 3.1 dB, Output Power 45.5 to 20 dBm. Tags: Surface Mount, Power Amplifier. More details for YSF-2151+ can be seen below.