A novel DIN coupler relates to the technical field of power dividers. The novel DIN coupler comprises a shell, an insulator, a jack, and a pin. One end of the pin is connected with a power divider inner conductor, and the other end is connected with the jack. The insulator is mounted between the two ends of the pin. The shell is mounted outside the insulator. The pin and the jack are two separate parts. The connection between the coupler shell and the power divider inner conductor is the same with that of an N-type coupler, while the tail part is still of a DIN structure. Thus, materials are saved, and the cost is reduced. The biggest benefit is that the shell and the cavity of the novel DIN coupler are the same with those of an N-type cavity power divider, so the difficulty in processing and assembling is lowered, and the production efficiency is improved.