The 2351 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 1.6 MHz, Stopband Frequency 5 MHz, 3 dB Cutoff Frequency 1.6 MHz, Lower Rejection 27 dB@5 MHz, Upper Rejection 3 dB@5 MHz. Tags: Module with Connector. More details for 2351 can be seen below.
