The LFCW-133+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 13.25 GHz, 3 dB Cutoff Frequency 13.65 GHz, Insertion Loss 2.5 dB, Rejection 19 to 24 dB, Upper Rejection 19 to 24 dB. Tags: Surface Mount, Ceramic Filter. More details for LFCW-133+ can be seen below.