The LFCG-42 from Mini Circuits is a Low Pass RF Filter with Frequency DC to 435 MHz, Stopband Frequency 625 to 6000 MHz, 3 dB Cutoff Frequency 475 MHz, Insertion Loss 0.9 to 1.6 dB, Rejection 20 to 40 dB. Tags: Surface Mount, Ceramic Filter. More details for LFCG-42 can be seen below.