The BWLF-16 from Sainty-Tech Communications Limited is a Low Pass RF Filter with Frequency DC to 16 GHz, 3 dB Cutoff Frequency 16 GHz, Insertion Loss 1.8 dB @16GHz, Rejection 20 dB @23.6GHz, 40 dB @30.6GHz, Power 30 dBm. Tags: Die. More details for BWLF-16 can be seen below.