The 3030-140-5 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 137.5 to 142.5 MHz, Bandwidth 5 MHz, Center Frequency 140 MHz, Insertion Loss 2 dB, Rejection 40 dB. Tags: Surface Mount, Lumped Component Filter. More details for 3030-140-5 can be seen below.