The SiMF5R7/1R1-8D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 5.2 to 6.3 GHz, Center Frequency 5.75 GHz, Insertion Loss 2.5 dB, Rejection 30 dB @4.65GHz&6.9GHz, 40 dB @4.5GHz&6.95GHz, 60 dB @DC~3.5GHz, 60 dB @9~11GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF5R7/1R1-8D2 can be seen below.