The MF4A3300F400DCD from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3100 to 3500 MHz, Bandwidth 400 MHz, Center Frequency 3300 MHz, Insertion Loss 2 dB, Upper Rejection 30 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MF4A3300F400DCD can be seen below.