The PDBF-1R6/2-4C3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1.6 to 2 GHz, Center Frequency 1.8 GHz, Insertion Loss [email protected], Rejection =40 dB @0.7 & 2.0 GHz, Upper Rejection 40 dB. Tags: Surface Mount. More details for PDBF-1R6/2-4C3 can be seen below.