In this article, a type of RF SAW filter that can meet the requirements of the B3 band carrier frequency filtering of the second generation Beidou end-users is introduced. A hybrid design scheme of 5-transducer longitudinal coupling structure plus resonator structure is adopted in the filter. The filter with -1 dB bandwidth of 35 MHz, insertion loss of 2.2 dB and shape factor of 1.9 has been developed after comprehensively considering the parasitic effects of the SMD3030A package and the bonding wires. The comparison shows that the simulation and measurement results are in good agreement, which proves the proposed design scheme is practicable.