The CHS5104-99F from United Monolithic Semiconductors is a RF Switch with Frequency DC to 4 GHz, Insertion Loss 0.5 to 0.25 dB, Isolation 30 to 38 dB, P1dB 20 dBm, Power 30 to 33 dBm. Tags: Surface Mount, Solid State. More details for CHS5104-99F can be seen below.