The EMA4B1230P140B10A1 from ECHO Microwave is a Band Pass Filter with Frequency 1.16 to 1.3 GHz, Insertion Loss 1 dB, Rejection 10 dB, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4B1230P140B10A1 can be seen below.