The DBHF0503201800A from Qotana is a RF High Pass Filter with Frequency 3.2 to 18 GHz, Insertion Loss 2.3 dB, Power 15 W, Rejection 35 dB, VSWR 2.00:1. Tags: Module with Connectors, Suspended Substrate Filter. More details for DBHF0503201800A can be seen below.