The BFHKI-1252+ from Mini Circuits is a Band Pass Filter with Frequency 10900 to 13900 MHz, Bandwidth 3000 MHz, Center Frequency 12.4 GHz, Insertion Loss 3.2 to 4.5 dB, Upper Rejection 28 to 38 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BFHKI-1252+ can be seen below.