The DFC0303Q1857P045 from Zhejiang Jiakang Electronics is a Band Pass Filter with Frequency 1.8345 to 1.8795 GHz, Bandwidth 45 MHz, Center Frequency 1857 MHz, Insertion Loss 3 dB, Rejection 20 dB. Tags: Surface Mount. More details for DFC0303Q1857P045 can be seen below.