The 2635-SMA from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 167 MHz, Stopband Frequency 226 MHz, 3 dB Cutoff Frequency 167 MHz, Lower Rejection 50 dB@226 MHz, Upper Rejection 1 dB@226 MHz. Tags: Module with Connector. More details for 2635-SMA can be seen below.