The BWLF-8 from Sainty-Tech Communications Limited is a Low Pass RF Filter with Frequency DC to 8 GHz, 3 dB Cutoff Frequency 8 GHz, Insertion Loss 1.6 dB @8.0GHz, Rejection 20 dB @12.3GHz, 40 dB @15.55GHz, Power 30 dBm. Tags: Die. More details for BWLF-8 can be seen below.