The ECA3795P10B44BM-DR from ECHO Microwave is a Band Pass Filter with Frequency 3.79 to 3.8 GHz, Insertion Loss 0.9 dB, Rejection 44 dB @ 3818MHz, Ripple 0.5 dB, Return Loss 20 dB. Tags: Cavity Filter. More details for ECA3795P10B44BM-DR can be seen below.