The EMA8J2535P70F50D from ECHO Microwave is a Band Pass Filter with Frequency 2.5 to 2.57 GHz, Insertion Loss 3 dB, Rejection 25 to 50 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J2535P70F50D can be seen below.