The MF3A634S35DCA from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 617 to 652 MHz, Bandwidth 35 MHz, Center Frequency 634.5 MHz, Insertion Loss 2.5 dB, Upper Rejection 25 to 30 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MF3A634S35DCA can be seen below.