The SK4-0525035055-2F2F-A3 from ERAVANT is a RF Switch with Frequency 0.5 to 50 GHz, Insertion Loss 4 to 5 dB, Isolation 42 to 65 dB, Power 20 dBm, Power 0.1 W. Tags: Module with Connectors, Solid State. More details for SK4-0525035055-2F2F-A3 can be seen below.