The ERZ-HPF-0350-0690-1.7 from ERZIA is a RF High Pass Filter with Frequency 3.5 to 6.9 GHz, Insertion Loss 0.7 to 1.7 dB, Rejection 30 [email protected] GHz, 60 [email protected] GHz, Return Loss 10.3 to 15 dB. Tags: Module with Connectors, Suspended Substrate Filter. More details for ERZ-HPF-0350-0690-1.7 can be seen below.