The DEI9594-1.40MHz from Dynamic Engineers is a Band Pass Filter with Frequency 1.397 to 1.403 MHz, Bandwidth 6 kHz, Center Frequency 1.4 MHz, Insertion Loss 4 dB, Rejection 60 dB@±8.1 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI9594-1.40MHz can be seen below.