PROBLEM TO BE SOLVED: To provide a rectifier of an AC generator for vehicle in which damage or peeling of a semiconductor chip, incident to scoring generated when press-fitting a rectifier element, can be prevented.SOLUTION: A rectifier 5 of an AC generator 1 for vehicle includes a negative electrode side radiation fin 53 having a fixing hole 60 with a first chamfer 60A formed at the opening end, and formed using the frame 6 of the AC generator 1 for vehicle, and a negative electrode side rectifier element 55 press-fitted in the fixing hole 60 from the opening end with a first chamfer 60A formed therein, and having a second chamfer 55A formed on the opening end side.
