The MXB1172A from CTS Electronic Components is a Band Pass Filter with Frequency 10.7 to 12.75 GHz, Insertion Loss 1.3 to 1.8 dB, Upper Rejection 30 to 45 dB, Lower Rejection 40 to 50 dB, Power 2 W. Tags: Surface Mount, Ceramic Filter. More details for MXB1172A can be seen below.