The EMA6E1420P50D30D from ECHO Microwave is a Band Pass Filter with Frequency 1.4 to 1.45 GHz, Insertion Loss 2 dB, Rejection 30 dB @ 1330 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA6E1420P50D30D can be seen below.