The EMA8J1090P88J40D from ECHO Microwave is a Band Pass Filter with Frequency 1.05 to 1.13 GHz, Insertion Loss 5 dB, Rejection 40 to 50 dB, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1090P88J40D can be seen below.