The 2157-650-10-50 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 325 to 975 MHz, Bandwidth 650 MHz, Center Frequency 650 MHz, Insertion Loss 3 dB, Rejection 40 dB. Tags: DIP, Lumped Component Filter. More details for 2157-650-10-50 can be seen below.