The EMA15F836P25C40D from ECHO Microwave is a Band Pass Filter with Frequency 824 to 849 MHz, Insertion Loss 1.5 dB, Rejection 40 dB @ 869 to 894 MHz, Return Loss 18 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA15F836P25C40D can be seen below.