The HDF868.3A1 from Shoulder Electronics is a Band Pass Filter with Frequency 864.8 to 871.8 MHz, Bandwidth 7 to 13.8 MHz, Center Frequency 868.3 MHz, Insertion Loss 3.1 dB, Power 0.001 W. Tags: Surface Mount, RF SAW Filter. More details for HDF868.3A1 can be seen below.