The EMA10L1900P70F15D from ECHO Microwave is a Band Pass Filter with Frequency 1.87 to 1.94 GHz, Insertion Loss 3 dB, Rejection 15 to 30 dB, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA10L1900P70F15D can be seen below.