The FNP-1508 from Filtronetics is a Low Pass RF Filter with Frequency DC to 400 MHz, Stopband Frequency 450 to 800 MHz, 3 dB Cutoff Frequency 400 MHz, Insertion Loss 2 dB, Rejection 50 dB. Tags: Surface Mount, Lumped Component Filter. More details for FNP-1508 can be seen below.