The EMA4E1230P60F70D from ECHO Microwave is a Band Pass Filter with Frequency 1.2 to 1.26 GHz, Insertion Loss 3 dB, Rejection 70 dB @ 1150 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4E1230P60F70D can be seen below.