The EMA8J2350P100F40D from ECHO Microwave is a Band Pass Filter with Frequency 2.3 to 2.4 GHz, Insertion Loss 3 dB, Rejection 40 dB @ 2225 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J2350P100F40D can be seen below.