The EMA4D1920P60D35D from ECHO Microwave is a Band Pass Filter with Frequency 1.89 to 1.95 GHz, Insertion Loss 1.8 dB, Rejection 10 to 35 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D1920P60D35D can be seen below.