The ERZ-LPF-0000-0380-1.3 from ERZIA is a Low Pass RF Filter with Frequency DC to 3.8 GHz, Insertion Loss 0.3 to 1.3 dB, Rejection 30 [email protected] GHz, 60 [email protected] GHz, Return Loss 17.2 to 20 dB. Tags: Module with Connector, Suspended Substrate Filter. More details for ERZ-LPF-0000-0380-1.3 can be seen below.