The MF3A748S40DCB 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 2.5 dB, Upper Rejection 0 to 25 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MF3A748S40DCB can be seen below.