The CER0729B from CTS Electronic Components is a Band Pass Filter with Frequency 1.89 to 2.03 GHz, Bandwidth 140 MHz, Insertion Loss Less than 2.5 dB, Rejection 50 to 65 dB, Power 2 to 20 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for CER0729B can be seen below.