The EMA6H1379P90C45D from ECHO Microwave is a Band Pass Filter with Frequency 1.33 to 1.42 GHz, Insertion Loss 1.5 dB, Rejection 45 dB @ 1283.9 MHz, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA6H1379P90C45D can be seen below.