The BFCO-252+ from Mini Circuits is a Band Pass Filter with Frequency 2400 to 2500 MHz, Center Frequency 2450 MHz, Insertion Loss 3.7 dB, Upper Rejection 16 to 23 dB, Lower Rejection 20 to 35 dB. Tags: Ceramic, Ceramic Filter. More details for BFCO-252+ can be seen below.