The MC6A3750F900NCA from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3300 to 4200 MHz, Bandwidth 900 MHz, Center Frequency 3750 MHz, Insertion Loss 1 to 1.2 dB, Upper Rejection 40 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MC6A3750F900NCA can be seen below.