The ECA2025P50A40A from ECHO Microwave is a Band Pass Filter with Frequency 2 to 2.05 GHz, Insertion Loss 0.5 dB, Rejection 40 dB @ DC to 1800MHz, Ripple 0.4 dB, Return Loss 20 dB. Tags: Cavity Filter. More details for ECA2025P50A40A can be seen below.