The 2340-18.75-15-50 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 17.35 to 20.15 MHz, Bandwidth 2.8 MHz, Center Frequency 18.75 MHz, Insertion Loss 3 dB, Rejection 25 dB. Tags: DIP, Lumped Component Filter. More details for 2340-18.75-15-50 can be seen below.