The CER0789A from CTS Electronic Components is a Band Pass Filter with Frequency 2.4 to 2.47 GHz, Bandwidth 66 MHz, Insertion Loss Less than 3.4 dB, Rejection 15 to 19 dB, Power 1 to 10 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for CER0789A can be seen below.