The SiMF8R5/3-9D1 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7 to 10 GHz, Center Frequency 8.5 GHz, Insertion Loss 1.3 dB, Rejection 30 dB @6.05GHz&10.85GHz, 40 dB @5.8GHz&11.1GHz, 60 dB @DC~5GHz, 50 dB @12~17GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R5/3-9D1 can be seen below.