The XLF-42M+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 0.3 GHz, Stopband Frequency 660 MHz to 10 GHz, 3 dB Cutoff Frequency 0.35 GHz, Insertion Loss 2.3 to 3.1 dB, Rejection 17 to 49 dB. Tags: Surface Mount, Reflectionless Filter. More details for XLF-42M+ can be seen below.