The HMC347A-Die from Analog Devices is a RF Switch with Frequency 0.1 to 20 GHz, Insertion Loss 1.6 to 2.7 dB, Isolation 35 to 52 dB, P1dB 21 to 29 dBm, P1dB 0.125 to 0.794 W. Tags: Surface Mount, Solid State. More details for HMC347A-Die can be seen below.