The PDLF-R5G from Sainty-Tech Communications Limited is a Low Pass RF Filter with Frequency DC to 0.51 GHz, 3 dB Cutoff Frequency 0.51 GHz, Insertion Loss 1.6 dB @0.51GHz, Rejection 20 dB @0.78GHz, Power 30 dBm. Tags: Die. More details for PDLF-R5G can be seen below.