The EMA6E1452P50D30D from ECHO Microwave is a Band Pass Filter with Frequency 1.43 to 1.48 GHz, Insertion Loss 2 dB, Rejection 30 dB @ 1362 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA6E1452P50D30D can be seen below.