The SiMS10/4-11D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8 to 12 GHz, Center Frequency 10 GHz, Insertion Loss 2.8 dB, Rejection 30 dB @7.07GHz&13.04GHz, 40 dB @6.75GHz&13.21GHz, 60 dB @DC-5.41GHz, 60 dB @13.5-13.9GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS10/4-11D2 can be seen below.