The XLF-73-D+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 7 GHz, Stopband Frequency 11.7 to 21.3 GHz, 3 dB Cutoff Frequency 9.9 GHz, Insertion Loss 1.1 dB, Rejection 15 dB. Tags: Die, Reflectionless Filter. More details for XLF-73-D+ can be seen below.