The PDBF-5R25/5R85-5D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 5.25 to 5.8 GHz, Center Frequency 5.53 GHz, Insertion Loss [email protected], Rejection =35 dB @4.7&6.35GHz, Upper Rejection 35 dB. Tags: Surface Mount. More details for PDBF-5R25/5R85-5D2 can be seen below.