The 2426 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 320 MHz, Stopband Frequency 1000 MHz, 3 dB Cutoff Frequency 320 MHz, Lower Rejection 35 dB@1000 MHz, Upper Rejection 0.5 dB@1000 MHz. Tags: Surface Mount. More details for 2426 can be seen below.