The AM3000B1452 from Anatech Electronics is a Band Pass Filter with Frequency 2.7 to 3.3 GHz, Bandwidth 600 MHz, Center Frequency 3000 MHz, Insertion Loss 2 dB, Rejection 30 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM3000B1452 can be seen below.