The DEI9744-5.25MHz from Dynamic Engineers is a Band Pass Filter with Frequency 5.2465 to 5.2535 MHz, Bandwidth 7 kHz, Center Frequency 5.25 MHz, Insertion Loss 4.5 dB, Rejection 60 dB@±30 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI9744-5.25MHz can be seen below.