The 2933-SMA from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 30 MHz, Stopband Frequency 36 MHz, 3 dB Cutoff Frequency 30 MHz, Lower Rejection 65 dB@36 MHz, Upper Rejection 3 dB@36 MHz. Tags: Module with Connector. More details for 2933-SMA can be seen below.