The EMA4D2355P9.6F23B from ECHO Microwave is a Band Pass Filter with Frequency 2.35 to 2.36 GHz, Insertion Loss 3 dB, Rejection 23 to 43 dB, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D2355P9.6F23B can be seen below.