Abstract: In a solid electrolyte capacitor in a chip structure, a capacitor member is connected to a cathode terminal by a solder layer or by a conductive glue. A fuse element is arranged in the cathode terminal, the fuse element bridging an opening in the cathode terminal. The cathode terminal is interrupted at the location of the opening to place the fuse element in series with the cathode terminal and the body of the capacitor. An anode wire is connected to the anode terminal.
Abstract: A solid electrolyte capacitor in a block of electrically insulative resin is provided with two electrodes connected by respective connecting tangs to output leads (+, -) and to a fuze test lead; one connecting tang (6) is formed by a first section (6B) fixed to one of the electrodes and projecting out of the resin block to form the fuze test lead, and a second section (6A) projecting out of the resin block to form a conventional terminal; an elongate strip (10) forms the fuze in one piece with the sections (6A,6B) so as to provide the only electrical connection between the sections; the fuze is coated with a supporting mass of thermally insulative resin extending between the two sections and embedded in the resin block.
Abstract: A pocket within the molded casing of a solid electrolyte capacitor is of greater volume than a fuze passing through the pocket, thereby ensuring that the fuze will not reestablish its conductive path after being blown. The pocket is established between layers of polyester tape that insulate the cathode of the capacitor from its leadframe and protect the fuze from the molding material.
Abstract: A solid electrolyte capacitor in a chip stucture has a fuse element that is arranged in the anode terminal. What is achieved by applying parting locations in the anode terminal is a current path that extends by way of the anode terminal, the fuse element, an anode wire weld point, an anode wire, a sintered anode member, and a cathode contact to the cathode terminal.
Abstract: A solid electrolytic capacitor embedded in an electrically insulating resin block has a capacitor body fitted with two electrodes which are connected by two connecting lugs, those of the output terminals (+, -) and a fuze test. One of the connecting lugs is formed of a first section attached to one of electrodes of the capacitor body and leading outside the resin block to form the fuze test terminal, and of a second section electrically insulated with respect to first section and the capacitor body and leading outside the resin block to form a normal operating terminal. The fuze element alone establishes an electric link between the first and second sections while being surrounded by the supporting mass of thermally insulating resin reaching from one of the sections to the other, while itself being embedded in the resin.
Abstract: A fused solid electrolytic capacitor comprises a six sided body having a pair of spaced parallel sides, one of which will be positioned next to any mounting structure which supports the capacitor. One end of a fuse wire may be connected to either of the spaced parallel sides. The other end of the fuse wire extends through an open passageway in an insulating block to a cathode electrode, thereby giving the fuse wire a fixed length. This way there is no danger that the fuse wire may short circuit along its length to either the capacitor body or the cathode electrode. A result is a smaller capacitor which may be manufactured with a greater harvest yield, as compared to the size and yield of similar prior art fused solid electrolytic capacitors.
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.
Type:
Grant
Filed:
April 5, 1989
Date of Patent:
March 6, 1990
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Abstract: A solid electrolyte capacitor body is embedded in an electrically insulative block of resin. Output terminals each connected to a respective electrode of the capacitor body project from the block. One output terminal includes a first section fixed to one of the electrodes and a second section electrically insulated from the first section and the capacitor body. A fusible member alone establishes electrical connection between the first and second sections. The fusible member is embedded in a rigid thermally insulative resin which extends between the first and second sections to couple them together mechanically.