The DMCF45F001-45.00MHz from Dynamic Engineers is a Band Pass Filter with Frequency 44.99625 to 45.00375 MHz, Bandwidth 7.5 kHz, Center Frequency 45 MHz, Insertion Loss 4 dB, Rejection 30 dB@±12.5 kHz to 90 dB@±910 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DMCF45F001-45.00MHz can be seen below.