The BWBF-8/12-5E2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8 to 11.7 GHz, Center Frequency 9.85 GHz, Insertion Loss [email protected], Rejection =40 dB @5.6&16.5GHz, Upper Rejection 40 dB. Tags: Surface Mount. More details for BWBF-8/12-5E2 can be seen below.