The EMA8J2350P30H55D from ECHO Microwave is a Band Pass Filter with Frequency 2.34 to 2.37 GHz, Insertion Loss 4 dB, Rejection 55 dB @ 2280 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J2350P30H55D can be seen below.