The EMA8F1400P40D35B from ECHO Microwave is a Band Pass Filter with Frequency 1.38 to 1.42 GHz, Insertion Loss 2 dB, Rejection 35 dB @ 1350MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F1400P40D35B can be seen below.