The LP1CH3-0S from R & K Company Limited is a Low Pass RF Filter with Frequency DC to 1 MHz, Stopband Frequency 2 to 5 MHz, 3 dB Cutoff Frequency 1 MHz, Insertion Loss 1 dB, Rejection 45 dB. Tags: Module with Connector, Chebyshev Filter. More details for LP1CH3-0S can be seen below.