The HMC641ALC4 from Analog Devices is a RF Switch with Frequency DC to 20 GHz, Insertion Loss 1.8 to 3.5 dB, Isolation 30 to 42 dB, P1dB 10 to 25 dBm, P1dB 0.01 to 0.316 W. Tags: Surface Mount, Solid State. More details for HMC641ALC4 can be seen below.