The XLF-133-D+ 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 dB, Rejection 16 to 21 dB. Tags: Die, Reflectionless Filter. More details for XLF-133-D+ can be seen below.