The ECA2510P20B80A from ECHO Microwave is a Band Pass Filter with Frequency 2.5 to 2.52 GHz, Insertion Loss 0.7 dB, Rejection 80 dB @ 2400 to 2420MHz, Ripple 0.2 dB, Return Loss 15 dB. Tags: Cavity Filter. More details for ECA2510P20B80A can be seen below.