The CHA6357-QKB from United Monolithic Semiconductors is a RF Amplifier with Frequency 27 to 31 GHz, Gain 28 dB(Linear/Small Signal), Small Signal Gain 28 dB, Saturated Power 36 dBm, Saturated Power 4 W. Tags: Surface Mount, Power Amplifier. More details for CHA6357-QKB can be seen below.