The SiMF8R7/2R5-7D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.5 to 9.95 GHz, Center Frequency 8.7 GHz, Insertion Loss 1.6 dB, Rejection 30 dB @6.6GHz&10.7GHz, 40 dB @6GHz&11.05GHz, 60 dB @DC~5.4GHz, 55 dB @11.2~20GHz, Upper Rejection 30 to 55 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R7/2R5-7D2 can be seen below.