The DEI9600-20.00MHz from Dynamic Engineers is a Band Pass Filter with Frequency 19.9985 to 20.0015 MHz, Bandwidth 3 kHz, Center Frequency 20 MHz, Insertion Loss 5 dB, Rejection 60 dB@±36 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI9600-20.00MHz can be seen below.