The BP0AA3700A7 from KYOCERA AVX is a Band Pass Filter with Frequency 3.020 to 4.533 GHz, Center Frequency 3.7 GHz, Insertion Loss 1.8 dB, Rejection 30 to 40 dB, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Ceramic Filter. More details for BP0AA3700A7 can be seen below.