The BWLF-14 from Sainty-Tech Communications Limited is a Low Pass RF Filter with Frequency DC to 14 GHz, 3 dB Cutoff Frequency 14 GHz, Insertion Loss 1.6 dB @14GHz, Rejection 20 dB @21.6GHz, 40 dB @27.7GHz, Power 30 dBm. Tags: Die. More details for BWLF-14 can be seen below.