The EDA4D1260P20E50 from ECHO Microwave is a Band Pass Filter with Frequency 1.25 to 1.27 GHz, Insertion Loss 2.5 dB, Rejection 50 dB @ DC to 1140MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4D1260P20E50 can be seen below.