Abstract:
A multilayer ceramic device suitable for use in surface mount decoupling applications may have a single capacitor or a capacitor array. The device has a capacitor body defining a plurality of electrical terminals on an outer surface thereof. The terminals are interdigitated such that a respective first polarity terminal will be adjacent to a respective second polarity terminal (and vice versa). The capacitor body contains a plurality of interleaved capacitor plates in opposed and spaced apart relation. Capacitor plates of the first polarity are electrically connected to respective first polarity terminals via a plurality of lead structures. Likewise, a plurality of lead structures electrically connect capacitor plates of the second polarity to respective second polarity terminals.
Abstract:
A multilayer electronic component (200) is provided. The component includes a substrate package assembly (202) with a set of stacked insulated sheets of a dielectric ceramic material (204, 206, 208, 210, 212). Also included are a set of embedded resistors (214), each of the embedded resistors including an electrical input port pad (216) and an electrical output port pad (218) provided in layers between the set of stacked insulated sheets. Each of the insulated sheets has a trough (220) of a predetermined length aligned between and transverse to the electrical input port pad (216) and the electrical output port pad (218). The trough (220) reduces the resistance value variability in the multilayer electronic component (200). The trough (220) is substantially filled with a resistive paste material and an internal circuit (222) connects the embedded resistors inside the substrate package assembly (202). A method of forming the substrate package assembly (202) is also provided.
Abstract:
A connectorized substrate and method of connectorizing a substrate is provided, including a substrate having conductive traces mounted thereon and solder paste connected to the conductive traces and conductive spheres mounted to the solder paste. The connectorized substrate of the present invention may be used to provide for components to be added to a motherboard such as a resistor network by mounting resistors to the conductive traces of the substrate such as thick-film ceramic resistors.
Abstract:
Discrete circuit devices constructed on a component substrate thermally matched to the supporting substrate of a higher level circuit assembly. Upon securing each component to the supporting substrate of a higher level circuit assembly, a connection subject to reduced thermal stress is obtained. In the construction of an exemplary surface mount, hybrid component containing resistors and capacitors, a component substrate of a polyimide impregnated material is populated with a repeating matrix of chip capacitors and chip resistors, which are adhesively bound and soldered to selected termination pads containing high temperature solder filled through vias. The substrate is epoxy encapsulated and then diced at selected ones of the through vias into multiple components. Each thermally matched component is resoldered at the separated vias to obtain surface mount terminations. Portions of the vias may be exposed through the component sidewall to permit circuit test. Other, exemplary thermally matched components, constructed of multi-layer resin or ceramic substrates are also disclosed and wherein external termination pads are concentrated to the center of the component. Alternative, thermally matched transmission lines and resistor network circuits are also disclosed.
Abstract:
The resistor network of the present invention uses nodal common points with branch conductors for distribution of electrical power to a plurality of resistors. Separating the branch conductors are electromagnetic shields which isolate individual resistors and branch conductors so as to reduce crosstalk between resistors. Additionally, resistors are alternately patterned upon each side of a substrate in order to further reduce crosstalk.
Abstract:
Techniques and systems for electronic circuit board design is provided herein. An example apparatus comprises an input structure that couples an input voltage node on a circuit board to input nodes of more than one voltage regulator circuit, wherein at least controller footprints differ among each of the more than one voltage regulator circuit. The apparatus further comprises a shared structure that couples switch nodes of the more than one voltage regulator circuit to a first terminal of an inductor footprint common to the more than one voltage regulator circuit, and an output structure that couples a second terminal of the inductor footprint to an output voltage node.
Abstract:
A chip capacitor according to the present invention includes a substrate, a pair of external electrodes formed on the substrate, a capacitor element connected between the pair of external electrodes, and a bidirectional diode connected between the pair of external electrodes and in parallel to the capacitor element. Also, a circuit assembly according to the present invention includes the chip capacitor according to the present invention and a mounting substrate having lands, soldered to the external electrodes, on a mounting surface facing a front surface of the substrate.
Abstract:
A chip capacitor according to the present invention includes a substrate, a pair of external electrodes formed on the substrate, a capacitor element connected between the pair of external electrodes, and a bidirectional diode connected between the pair of external electrodes and in parallel to the capacitor element. Also, a circuit assembly according to the present invention includes the chip capacitor according to the present invention and a mounting substrate having lands, soldered to the external electrodes, on a mounting surface facing a front surface of the substrate.
Abstract:
The described embodiments relate generally to electronic components and more specifically to a capacitor array that can increase component density on a printed circuit board and reduce a distance to a ground plane. An array of capacitors can be formed by coupling a group of capacitors on their sides interspersed with interposer boards. The resulting configuration can increase component density and reduce an amount of resistance and effective series inductance between a set of power decoupling capacitors and an integrated circuit.
Abstract:
A device according to various aspects of the present invention generally includes a surface mount device having a top side, a bottom side, a plurality of sidewalls, and a circuit comprising one or more layers. The device includes a first conductive surface covering a portion of one of the sidewalls for providing an input to the circuit, a second conductive surface covering a portion of one of the sidewalls for providing an output from the circuit, and a third conductive surface covering a portion of one of the sidewalls for providing an electrical ground to the circuit. When the surface mount device is mounted to a provided mounting surface, at least one layer of the circuit is orthogonal to the provided mounting surface.