The CHS5104-QAG from United Monolithic Semiconductors is a RF Switch with Frequency DC to 4 GHz, Insertion Loss 0.3 to 0.7 dB, Isolation 35 to 45 dB, P1dB 27 to 33 dBm, Power 27 to 30 dBm. Tags: Surface Mount, Solid State. More details for CHS5104-QAG can be seen below.