The XBF-183+ from Mini Circuits is a Band Pass Filter with Frequency 17.5 to 18.5 GHz, Insertion Loss 4.9 to 5.8 dB, Upper Rejection 32 to 56 dB, Lower Rejection 43 to 67 dB, Power 0.5 W. Tags: Surface Mount. More details for XBF-183+ can be seen below.