The EMA4D2593P214D25B from ECHO Microwave is a Band Pass Filter with Frequency 2.49 to 2.7 GHz, Insertion Loss 2 dB, Rejection 25 to 40 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D2593P214D25B can be seen below.