The PDBF-R105/R145-4C5 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 0.11 to 0.135 GHz, Center Frequency 0.123 GHz, Insertion Loss 5.5@0.123GHz, Rejection =40 dB @40MHz & 200 MHz, Upper Rejection 40 dB. Tags: Surface Mount. More details for PDBF-R105/R145-4C5 can be seen below.