The CER0818B from CTS Electronic Components is a Band Pass Filter with Frequency 2.26 to 2.44 GHz, Bandwidth 180 MHz, Insertion Loss Less than 2.6 dB, Rejection 13 to 17 dB, Power 1 to 10 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for CER0818B can be seen below.