Abstract:
A capacitor including at least one interior metallization plane or plate and a multiplicity of vias for forming multiple redundant electrical connections within the capacitor. Series capacitors are provided having at least two interior plates redundantly electrically connected to at least two respective exterior plates. R-C devices are provided having multiple redundant vias filled with resistor material and/or conductor material to provide a resistor either in series with or parallel to a capacitor. Capacitors and R-C devices are provided having end terminations for applying voltage differential. Further, a method for making single capacitors, multiple parallel array capacitors, series capacitors and R-C devices is provided in which the chips are formed from the bottom up.
Abstract:
A capacitor device, which is mountable on a substrate, has an electrically conductive bottom lead frame with a bottom plate mountable substantially parallel to, and in contact with, the substrate and an electrically conductive top lead frame having a top plate spaced apart from the bottom plate and a first transition portion having a first end connected to the top plate and a second end, opposite the first end, electrically connectable to the substrate. Multilayer capacitors are mounted between the top plate and the bottom plate. The capacitors have opposed end terminations electrically connected to the top and bottom plates, such that internal electrode plates are substantially nonparallel to the substrate.
Abstract:
A monolithic capacitor structure includes opposed and overlapping plates within a dielectric body, which are arranged to form a lower frequency, higher value capacitor. Other conductive structure is located either inside the dielectric body or on an external surface thereof and is effective to form a higher frequency, lower value capacitor in parallel with the lower frequency, higher value capacitor. The resulting array of combined series and parallel capacitors integral with the dielectric body provides effective wideband performance in an integrated, cost-effective structure.
Abstract:
A substrate includes a single-layer capacitor and various external contacts. A first external contact provides a first electrical connection to the single-layer capacitor. A second external contact provides a second electrical connection to the single-layer capacitor. The first and third external contacts are electrically connectable to another electrical component, and internal metallization structures or vias of conductive material electrically connect the second contact and the third contact to facilitate the single-layer capacitor being connectable in a parallel circuit with the other electrical component.
Abstract:
A high power resistor device and method for making a high power resistor device. A resistor is formed on a first end of a fired, ceramic chip with multiple internal conductor electrodes, and end terminations are then applied to both ends of the chip. A power resistor device having a high power rating is thus provided having buried conductor electrodes electrically connected to end terminations, where the connection at the first end is through the resistor to form a power resistor structured to dissipate heat efficiently. In an alternative method of the present invention, both ends of the chip may be dipped in resistor paste to form resistors on both ends of the chip. In yet another alternative method of the present invention, a conductor under-layer is formed under the resistor, such as by first dipping the end of the chip in a conductor paste and firing the chip.
Abstract:
A monolithic capacitor structure includes at least first and second plates internal to a dielectric body, the plates extending inward from opposed conductive contacts on surfaces of the body, and forming capacitor(s) therebetween. A third plate extends within said body, electrically floating relative to the exterior contacts, and forming a capacitor with the first and second plates, and further forming a capacitor with additional conductive structures connected to the conductive contacts on the body. The resulting array of combined series and parallel capacitors formed by the third plate, in conjunction with the capacitor(s) formed by the first and second plates, provides effective wideband performance in an integrated, cost-effective structure.
Abstract:
A ceramic electrical device or component, normally a barium titanate ceramic capacitor, having a first coefficient of thermal expansion (CTE), typically about 10 parts per million per degree centigrade (10 ppm/.degree.C.), is physically and electrically mounted through an intermediary solder layer, normally copper, to a lead frame, normally made from a selected alloy of nickel-iron, having a second CTE at least one-fifth (20%) less, and more typically about 5 ppm/.degree.C., or one-half (50%) less, than is the CTE of the ceramic capacitor. Because ceramics are stronger in compression than in tension, the ceramic capacitor held within the lead frame is less likely to undergo a stress fracture at temperatures elevated above those of assembly than would be the case should the CTE's be equal, or should the CTE of the lead frame be greater than the CTE of the ceramic capacitor. Leaded ceramic capacitors, stacked multilayer ceramic capacitors, ceramic inductors and ceramic resistors so constructed satisfy United States standards for electronic components used in broad-temperature-range demanding military and space applications.