The CHA4253-FAB from United Monolithic Semiconductors is a Space Qualified RF Amplifier that operates from 17-21 GHz. It has a linear gain of 26 dB and P1dB value of 23.5 dBm. This low-noise amplifier has a gate length of 0.15 µm and requires a DC bias voltage of 4 V and a drain current of 230 mA. This medium power amplifier has an input return loss of 15 dB and an output return loss of 12 dB. It has a drain voltage of 4 V and an RF input power of 10 dBm. This SMD GaAs semiconductor has 20 leads and mount hermetic metal ceramic 6 x 6 mm² package. This RoHS-compliant amplifier is dedicated for a wide range of applicaations such as space, military, and commercial communication system.