The DMCF45C003-45.00MHz from Dynamic Engineers is a Band Pass Filter with Frequency 44.99 to 45.01 MHz, Bandwidth 20 kHz, Center Frequency 45 MHz, Insertion Loss 3 dB, Rejection 35 dB@±40 kHz to 70 dB@± 910 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DMCF45C003-45.00MHz can be seen below.