The 5235BP44A0180 from Johanson Technology is a Band Pass Filter with Frequency 5.17 to 5.33 GHz, Center Frequency 5.23 GHz, Insertion Loss 2.2 to 2.5 dB, Rejection 25 to 42 dB @ 5490 to 10660 MHz, Upper Rejection 25 to 42 dB @ 5490 to 10660 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for 5235BP44A0180 can be seen below.