The EMA10D2535P70B20D from ECHO Microwave is a Band Pass Filter with Frequency 2.5 to 2.57 GHz, Insertion Loss 1 dB, Rejection 10 to 20 dB, Return Loss 0.5 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA10D2535P70B20D can be seen below.