An automotive alternator rectifying apparatus that rectifies an alternating-current electromotive force that is generated in an automotive alternator stator into direct current, said rectifying apparatus comprising: a positive-side heatsink to which positive-side rectifying elements each having a lead are mounted; a negative-side heatsink that is disposed so as to be separated from said positive-side heatsink, and to which negative-side rectifying elements each having a lead are mounted; and a circuit board (31, 31A) that is disposed so as to be stacked with said positive-side heatsink and said negative-side heatsink, and that connects said positive-side rectifying elements and said negative-side rectifying elements to configure a bridge circuit, said rectifying apparatus being characterized in that: said circuit board (31, 31A) comprises: tubular lead guiding portions (33, 34, 35, 39) that comprise lead insertion apertures (33a, 34a, 35a, 39a) that are constituted by a flat surface and a curved surface that links two side edges of said flat surface; and terminals (36a, 36b, 36c) that are disposed so as to extend outward in aperture directions of said lead insertion aperture (33a, 34a, 35a, 39a) from exit edge portions of said lead insertion apertures, each of said terminals being exposed on said flat surface so as to be flush with said flat surface and to which are connected the leads (25a, 30a, 38) that are subject to connection that are inserted through entrances of said lead insertion apertures and that extend outward from exits; and said lead insertion apertures (33a, 34a, 35a, 39a) are formed such that cross-sectional areas thereof become gradually smaller from said entrances toward said exits. a positive-side heatsink to which positive-side rectifying elements each having a lead are mounted; a negative-side heatsink that is disposed so as to be separated from said positive-side heatsink, and to which negative-side rectifying elements each having a lead are mounted; and a circuit board (31, 31A) that is disposed so as to be stacked with said positive-side heatsink and said negative-side heatsink, and that connects said positive-side rectifying elements and said negative-side rectifying elements to configure a bridge circuit, said rectifying apparatus being characterized in that: said circuit board (31, 31A) comprises: tubular lead guiding portions (33, 34, 35, 39) that comprise lead insertion apertures (33a, 34a, 35a, 39a) that are constituted by a flat surface and a curved surface that links two side edges of said flat surface; and terminals (36a, 36b, 36c) that are disposed so as to extend outward in aperture directions of said lead insertion aperture (33a, 34a, 35a, 39a) from exit edge portions of said lead insertion apertures, each of said terminals being exposed on said flat surface so as to be flush with said flat surface and to which are connected the leads (25a, 30a, 38) that are subject to connection that are inserted through entrances of said lead insertion apertures and that extend outward from exits; and said lead insertion apertures (33a, 34a, 35a, 39a) are formed such that cross-sectional areas thereof become gradually smaller from said entrances toward said exits. said circuit board (31, 31A) comprises: tubular lead guiding portions (33, 34, 35, 39) that comprise lead insertion apertures (33a, 34a, 35a, 39a) that are constituted by a flat surface and a curved surface that links two side edges of said flat surface; and terminals (36a, 36b, 36c) that are disposed so as to extend outward in aperture directions of said lead insertion aperture (33a, 34a, 35a, 39a) from exit edge portions of said lead insertion apertures, each of said terminals being exposed on said flat surface so as to be flush with said flat surface and to which are connected the leads (25a, 30a, 38) that are subject to connection that are inserted through entrances of said lead insertion apertures and that extend outward from exits; and tubular lead guiding portions (33, 34, 35, 39) that comprise lead insertion apertures (33a, 34a, 35a, 39a) that are constituted by a flat surface and a curved surface that links two side edges of said flat surface; and terminals (36a, 36b, 36c) that are disposed so as to extend outward in aperture directions of said lead insertion aperture (33a, 34a, 35a, 39a) from exit edge portions of said lead insertion apertures, each of said terminals being exposed on said flat surface so as to be flush with said flat surface and to which are connected the leads (25a, 30a, 38) that are subject to connection that are inserted through entrances of said lead insertion apertures and that extend outward from exits; and said lead insertion apertures (33a, 34a, 35a, 39a) are formed such that cross-sectional areas thereof become gradually smaller from said entrances toward said exits.