The AM4650B1212 from Anatech Electronics is a Band Pass Filter with Frequency 4.31 to 4.81 GHz, Bandwidth 500 MHz, Center Frequency 4650 MHz, Insertion Loss 2.0 dB, Upper Rejection 20 dB @ 5650 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM4650B1212 can be seen below.