The MF3A3449F100CCB from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3399.5 to3500 MHz, Bandwidth 100.5 MHz, Center Frequency 3449.75 MHz, Insertion Loss 1.5 dB, Lower Rejection 40 to 45 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MF3A3449F100CCB can be seen below.