The HMC635LC4 from Analog Devices is a RF Amplifier with Frequency 18 to 40 GHz, Gain 18.5 dB, Noise Figure 7 dB, Output Power 22 dBm, Output Power 0.16 W. Tags: Surface Mount, Driver Amplifier, Power Amplifier. More details for HMC635LC4 can be seen below.