The BFCN-1525 from Mini Circuits is a Band Pass Filter with Frequency 1.48 to 1.57 GHz, Bandwidth 90 MHz, Center Frequency 1525 MHz, Insertion Loss 3 dB, Rejection 20 dB @ 1250 and 2180 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BFCN-1525 can be seen below.