The DFS0403R1616P020 from Zhejiang Jiakang Electronics is a Band Pass Filter with Frequency 1.606 to 1.626 GHz, Bandwidth 20 MHz, Center Frequency 1616 MHz, Insertion Loss 1 to 2 dB, Rejection 20 to 35 dB. Tags: Surface Mount. More details for DFS0403R1616P020 can be seen below.