Solid electrolytic capacitor and lead frame using for solid electrolytic capacitor

Abstract

A solid electrolytic capacitor and a structurally improved lead frame for the capacitor are disclosed. In the solid electrolytic capacitor of the present invention, the lead frame assembled with each stacked capacitor unit is firstly bent upward so as to extend along the front surface of the positive electrode portion of the capacitor unit, and secondly bent backward so as to be aligned with the upper surface of the positive electrode portion contact, which forms the positive terminal of the capacitor unit. The contact parts of the lead frame extend outward from both sides of the capacitor unit to make contact with the contact parts of the lead frame assembled with other capacitor units. The positive portion of each capacitor unit has the same width as the other components of the capacitor unit, thus eliminating stepped corners from the junction of the positive portion of the capacitor unit and the other components. Thus, since the capacitor unit does not have such stepped corners, the capacitor of the present invention will not be cracked or damaged regardless of impact or load, and undesirable stress concentration will not occur.

Description

field of invention [0001] The present invention relates generally to solid electrolytic capacitors and structurally improved lead frames for such capacitors, and more particularly to solid electrolytic capacitors in which the positive terminal member of the lead frame assembled with each stacked capacitor cell is bent upward, along the capacitor The front surface of the positive portion of the unit extends and bends back so as to make contact with the upper surface of the positive portion, thus forming the positive terminal of the capacitor unit, the contact parts of the lead frame extending outward from both sides of the lead frame, and other capacitor units The contact parts of the lead frames assembled together are in contact, and the positive portion of each capacitor unit has the same width as the other parts of the capacitor unit, thus eliminating the stepped corner from the junction of the positive portion of the capacitor unit and the other parts, such that Since the c...

AI Technical Summary

Problems solved by technology

Due to stress concentration at the stepped corners of each capacitor element, conventional solid electrolytic capacitors fabricated using such elements cannot effectively resist lateral or vertical impacts or effectively withstand loads applied to them in lateral or vertical directions

Such capacitors are prone to rupture or destruction

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