Patent ID: 6512668
Filing Date: 2003-01-28
Classification: H01G

Abstract:
A tantalum chip capacitor, comprising:a tantalum element produced using tantalum oxide as a dielectric substance; an anode lead wire extending outward from a side surface of said tantalum element, and having at least a substantially flat surface in an end portion thereof; a cathode lead frame having an inside end attached to said tantalum element and an outside end formed as a mounting terminal for surface mounting the tantalum chip capacitor on a circuit board; an anode lead frame having an inside end formed with a cut groove at a center thereof, and an outside end formed as another mounting terminal for surface mounting the tantalum chip capacitor on the circuit board, wherein the inside end of said anode lead frame is placed on and partially overlaps the flat surface of said anode lead wire so that a portion of said anode lead wire is partially received in the groove, and the inside end of said anode lead frame is welded to said anode lead wire in the overlapping region; and a mold package enclosing the tantalum element, the anode lead wire, a part of the cathode lead frame attached to the tantalum element, and a part of the anode lead frame welded to the anode lead wire; wherein said cut groove of the anode lead frame has a depth set to 4%Ëœ50% of a reference length which is a length of the part of the anode lead frame enclosed in said package.