The EDA6E3972P13N70 from ECHO Microwave is a Band Pass Filter with Frequency 3.97 to 3.98 GHz, Insertion Loss 7 dB, Rejection 5 to 70 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA6E3972P13N70 can be seen below.