The EMA4C2595P50E25D from ECHO Microwave is a Band Pass Filter with Frequency 2.57 to 2.62 GHz, Insertion Loss 2.5 dB, Rejection 25 dB @ 2200 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4C2595P50E25D can be seen below.