The BWLF-R08 from Sainty-Tech Communications Limited is a Low Pass RF Filter with Frequency DC to 0.08 GHz, 3 dB Cutoff Frequency 0.08 GHz, Insertion Loss 2.3 dB @0.08GHz, Rejection 20 dB @0.43GHz, 40 dB @0.65GHz, Power 30 dBm. Tags: Die. More details for BWLF-R08 can be seen below.