The EMA8H2575P30E50D from ECHO Microwave is a Band Pass Filter with Frequency 2.56 to 2.59 GHz, Insertion Loss 2.5 dB, Rejection 50 dB @ 2480 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H2575P30E50D can be seen below.