The EMA15J780P45E60D from ECHO Microwave is a Band Pass Filter with Frequency 703 to 748 MHz, Insertion Loss 2.5 dB, Rejection 60.0 dB @ 703 to 748MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA15J780P45E60D can be seen below.