The MF3A748S40DCA from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 728 to 768 MHz, Bandwidth 40 MHz, Center Frequency 748 MHz, Insertion Loss 2.2 dB, Upper Rejection 3 to 40 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MF3A748S40DCA can be seen below.