The SiMF5R15/R3-7D4 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 5.05 to 5.25 GHz, Center Frequency 5.15 GHz, Insertion Loss 4.5 dB, Rejection 30 dB @4.7GHz&5.55GHz, 40 dB @4.5GHz&5.8GHz, 60 dB @DC~4GHz, 60 dB @6.5~10GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF5R15/R3-7D4 can be seen below.