The PDBF1R8/1-16B2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1.3 to 2.3 GHz, Center Frequency 1.8 GHz, Insertion Loss [email protected], Rejection =25 dB @1.1&2.5GHz, Upper Rejection 25 dB. Tags: Surface Mount. More details for PDBF1R8/1-16B2 can be seen below.