The ECA2580P8D50AQ from ECHO Microwave is a Band Pass Filter with Frequency 2.57 to 2.58 GHz, Insertion Loss 1.9 dB, Rejection 50 dB @ fe(Bandedges), Ripple 0.8 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA2580P8D50AQ can be seen below.