The AM3575B554 from Anatech Electronics is a Band Pass Filter with Frequency 3.55 to 3.6 GHz, Bandwidth 50 MHz, Center Frequency 3575 MHz, Insertion Loss 2 dB, Upper Rejection 30dB @ 3375 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM3575B554 can be seen below.