The LF9821 from MtronPTI is a Band Pass Filter with Frequency 1.3 to 1.85 GHz, Bandwidth 550 MHz, Insertion Loss 1 dB, Rejection 15 to 40 dB, Upper Rejection 40 to 65 dB. Tags: Through Hole, Lumped Component Filter. More details for LF9821 can be seen below.