The XLF-133+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 13.1 GHz, Stopband Frequency 19.5 to 30 GHz, 3 dB Cutoff Frequency 15.8 GHz, Insertion Loss 2.0 to 2.4 dB, Rejection 13 to 21 dB. Tags: Surface Mount, Reflectionless Filter. More details for XLF-133+ can be seen below.