The AM2595B1231 from Anatech Electronics is a Band Pass Filter with Frequency 2.57 to 2.62 GHz, Bandwidth 50 MHz, Center Frequency 2595 MHz, Insertion Loss 3 dB, Lower Rejection 40 dB, 2467 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM2595B1231 can be seen below.