The AM3425B553 from Anatech Electronics is a Band Pass Filter with Frequency 3.4 to 3.45 GHz, Bandwidth 50 MHz, Center Frequency 3425 MHz, Insertion Loss 2 dB, Upper Rejection 25 dB 3625 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM3425B553 can be seen below.