The PDBF33/35-6B2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 31 to 35 GHz, Center Frequency 33 GHz, Insertion Loss 2.5@33GHz, Rejection =35 dB @23&40GHz, Upper Rejection 35 dB. Tags: Surface Mount. More details for PDBF33/35-6B2 can be seen below.