The HMC349AMS8G from Analog Devices is a RF Switch with Frequency 0.1 to 4 GHz, Insertion Loss 0.8 to 2.1 dB, Isolation 38 to 70 dB, P1dB 25 to 34 dBm, P1dB 0.316 to 2.511 W. Tags: Surface Mount, Solid State. More details for HMC349AMS8G can be seen below.