The BWLF-2G from Sainty-Tech Communications Limited is a Low Pass RF Filter with Frequency DC to 2 GHz, 3 dB Cutoff Frequency 2 GHz, Insertion Loss 1.5 dB @2.0GHz, Rejection 20 dB @3.25GHz, 40 dB @3.75GHz, Power 30 dBm. Tags: Die. More details for BWLF-2G can be seen below.