The EMA8J1300P230D40DA from ECHO Microwave is a Band Pass Filter with Frequency 1.19 to 1.42 GHz, Insertion Loss 2 dB, Rejection 40 to 50 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1300P230D40DA can be seen below.