The HMC349ALP4CE from Analog Devices is a RF Switch with Frequency 0.4 to 4 GHz, Insertion Loss 0.9 to 1.7 dB, Isolation 46 to 65 dB, P1dB 25 to 31 dBm, P1dB 0.316 to 1.258 W. Tags: Surface Mount, Solid State. More details for HMC349ALP4CE can be seen below.