Fused capacitor
AssigneeUnion Carbide Chemicals and Plastics Company Inc.
InventorBarry E. Neal
Life of this patent
Estimating the term…
Abstract
Lead frame assemblies for making fused capacitors, such as solid electrolyte capacitors, have cross ties that extend between the anode side and cathode side of the lead frame between every space intended to be occupied by a capacitor and have a fuse tie extending between the cross ties. The anode from the solid electrolytic capacitor body is attached to the fuse tie and a fuse conductor is positioned in an electrically conductive manner between the fuse tie and an anode lead. The assemblies may also be used to make non-polar dielectric capacitors.
Claims26
A unitary lead frame for the assembly of molded, fused solid dielectric capacitors comprising:
- (a) a rigid first electrode tie frame having a plurality of spaced-apart, rigid first electrode leads extending therefrom;
- (b) a diametrically opposed rigid second electrode tie frame having a plurality of spaced-apart second electrode leads extending therefrom, each of said second electrode leads being adapted to be in electrical communication with a second electrode of a solid electrolytic capacitor body;
- (c) a rigid cross tie extending between the first electrode tie frame and the second electrode tie frame between first electrode lead and second electrode lead pairs, said cross tie being in substantially the same plane as said first electrode tie frame and said second electrode tie frame;
- and
- (d) a rigid fuse tie extending substantially perpendicularly between adjacent cross ties and in substantially the same plane as the cross ties, said fuse tie being intermediate the first electrode lead and the second electrode lead of the first electrode lead and second electrode lead pair defined by said adjacent cross ties, said fuse tie defining a zone between the cross ties and the second electrode tie frame which zone is adapted to receive a solid dielectric capacitor body such that a first electrode of the dielectric capacitor body can be in electrical communication with the fuse tie and a second electrode of the dielectric capacitor body can be in electrical communication with the second electrode lead, and wherein said fuse tie is spaced away from the first electrode lead and both the first electrode lead and the fuse tie are adapted to receive opposite ends of a fuse conductor.
A fused capacitor comprising:
- (a) a unitary solid insulator casing having an exterior surface defining a front portion, a rear portion, two lateral portions, an upper portion and a lower portion;
- (b) a solid dielectric capacitor body having a first electrode and a second electrode, said body being surrounded by said insulator casing;
- (c) a second electrode lead in electrical contact with the second electrode of the dielectric capacitor body and extending through the exterior surface of the insulator casing;
- (d) a fuse tie extending between the two lateral portions of the insulator casing exterior which fuse tie is in electrical contact with the first electrode of the electrolyte body;
- (e) an electrically isolated first electrode lead extending from the insulator casing;
- and
- (f) a fuse conductor in electrical contact with the fuse tie and the first electrode lead.
A fused, solid dielectric capacitor comprising a solid dielectric capacitor body having a first electrode lead and a second electrode lead in electrical contact therewith, said dielectric capacitor body and a portion of said first electrode lead and said second electrode lead being encased in an insulator casing, wherein at least one of said electrode leads is electrically discontinuous and has an exothermic fuse extending between the electrically discontinuous portions of said electrode lead, said exothermic fuse comprising palladium with an exterior sheath of a malleable metal or alloy capable of being ultrasonically bonded, wherein said exothermic fuse is ultrasonically bonded at opposite ends to each of said electrically discontinuous portions of said electrode lead.
Dependencies are inferred from the claim text.