The SiMF11R5/3-7D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 9.9 to 13.1 GHz, Center Frequency 11.5 GHz, Insertion Loss 1.3 dB, Rejection 40 dB @DC~8.3GHz, 40 dB @14.4~20GHz, Upper Rejection 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF11R5/3-7D2 can be seen below.