The ECA2512P75B100BFM-A from ECHO Microwave is a Band Pass Filter with Frequency 2.48 to 2.55 GHz, Insertion Loss 1 dB, Rejection 100 dB @ 2400MHz, Ripple 0.8 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA2512P75B100BFM-A can be seen below.