The DBSR0300500400A from Qotana is a RF Switch with Frequency 500 MHz to 4 GHz, Insertion Loss 1.5 dB, Isolation 60 dB, Power 30 to 45 dBm, Power 1 to 30 W. Tags: Module with Connectors, Solid State. More details for DBSR0300500400A can be seen below.