The AE1635CB1778 from Anatech Electronics is a Band Pass Filter with Frequency 1625 to 1645 MHz, Bandwidth 20 MHz, Center Frequency 1635 MHz, Insertion Loss 2.5 dB, Rejection 30 to 65 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AE1635CB1778 can be seen below.