The HMC253ALC4 from Analog Devices is a RF Switch with Frequency DC to 3.5 GHz, Insertion Loss 1.1 to 2.4 dB, Isolation 30 to 43 dB, P1dB 20 to 24 dBm, P1dB 0.1 to 0.251 W. Tags: Surface Mount, Solid State. More details for HMC253ALC4 can be seen below.