The SiMF5/2R2-10D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3.85 to 6.15 GHz, Center Frequency 5 GHz, Insertion Loss 2 dB, Rejection 30 dB @3.35GHz&6.9GHz, 40 dB @3.1GHz&7.1GHz, 60 dB @DC~2.8GHz, 55 dB @7.45~12.2GHz, Upper Rejection 30 to 55 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF5/2R2-10D2 can be seen below.