Abstract:
A wiring component electrically connects a first semiconductor element, including first and second electrode terminals, and a second semiconductor element, including third and fourth electrode terminals. The wiring component includes first and second connection terminals respectively connected to the first and third electrode terminals. A third connection terminal is connected to the second electrode terminal, and a fourth connection terminal is connected to the fourth electrode terminal. An insulation layer embeds the wiring component and the third and fourth connection terminals. A wiring layer is formed on a lower surface of the insulation layer and connected to an internal connection terminal and the third and fourth external terminals. Upper surfaces of the first to fourth external terminals are located coplanar with one another.
Abstract:
A wide bandwidth circuit board arrangement includes two coplanar substrates separated by a predetermined gap, and at least one bond wire arranged across the gap and interconnecting a respective conducting microstrip line on a first side of each respective substrate. Further, the arrangement includes at least one open stub arrangement configured on the first side of each respective substrate, each open stub arrangement comprising a microstrip extending at an angle from an end of each conducting strip on each respective substrate. Finally, the arrangement includes a ground layer on a second side of each respective substrate, and a defected ground structure arranged on the second side of each respective substrate and laterally overlapping each respective open stub arrangement arranged on the first side.
Abstract:
The electrical circuit can include a line circuit portion having a number of shared resistor pads, where each shared resistor pad is electrically coupled to an electrically conductive line lead, where the electrically conductive line lead carries a voltage capable of operating an electrical load. The electrical circuit can also include a load circuit portion comprising a number of unshared resistor pads. The electrical circuit can further include at least one zero ohm resistor electrically coupled to at least one shared resistor pad. The at least one zero ohm resistor can be configurable after manufacturing the printed circuit board. The load circuit portion can be electrically isolated from the line circuit portion in the absence of the at least one zero ohm resistor being further electrically coupled to at least one unshared resistor pad.
Abstract:
A terminal is formed on a substrate. An anisotropic conductive film is disposed on the terminal. A flexible printed board is connected to the terminal via the anisotropic conductive film. At least one opening is formed in the terminal. An adhesion reinforcing portion as a projection is formed inside the opening. The adhesion reinforcing portion is formed of a material having higher adhesion to the anisotropic conductive film than a material constituting the surface of the terminal, and is adhered to the anisotropic conductive film.
Abstract:
An electronic component mounting structure includes a first land, a second land making a pair with the first land, an electronic component having a chip shape and including a first electrode connected to the first land and a second electrode connected to the second land, a first wiring pattern connected to the first land, and a second wiring pattern connected to the second land and including a first partial pattern overlapping a portion of a body of the electronic component in planar view, the portion being not covered with the pair of electrodes, a second partial pattern formed integral with the first partial pattern and overlapping the first electrode of the electronic component in planar view, and a third partial pattern formed integral with the second partial pattern and parallel to the first wiring pattern.
Abstract:
An illustrative inventory of vehicle accessory control components includes a plurality of first circuit boards and a plurality of second circuit boards. The first circuit boards each have a substrate with a plurality of circuit elements supported on the substrate. The first circuit board substrates have an overall perimeter shape including an outer edge profile and a plurality of first deviations from the outer edge profile. The second circuit boards each have a substrate with a plurality of circuit elements supported on them. The second circuit board substrates have the overall perimeter shape including the same outer edge profile as the first circuit board substrates. The second circuit board substrates include a plurality of second deviations from the outer edge profile. At least one portion of the second deviations is different than the first deviations of the first circuit boards.
Abstract:
A signal line includes a first line portion at a first layer level and a second line portion at a second layer level, which are connected by a first interlayer connection. A first ground portion at the first layer level includes end portions closer to the first line portion than an intermediate portion, and a second ground portion at the second layer level includes end portions closer to the second line portion than an intermediate portion. A second interlayer connection connects one of the end portions of the first ground portion and one of the end portions of the second ground portion. A distance between the first and second interlayer connections is less than a distance between the first line portion and the intermediate portion of the first ground portion and is less than a distance between the second line portion and the intermediate portion of the second ground portion.
Abstract:
A parallel via design is disclosed to improve the impedance match for embedded common mode choke filter designs. Particularly suited to such designs on four-layer printed circuit boards, the parallel via design effectively suppresses the reflection of the differential pair. By connecting the vias in parallel, the inductance of the entire via structure is reduced while its capacitance is simultaneously increased. By properly choosing the number of parallel vias and the spacing between them, the impedance of the parallel vias can be well controlled within the frequency range of interest. Consequently, the impedance match can be improved and the return loss of a four-layer printed circuit board common mode choke filter design is reduced.
Abstract:
A wiring board includes a metal core including a first surface and a second surface facing each other and a first portion and a second portion disposed on the first and second surfaces, respectively. The first and second portions each include a plurality of insulating layers and a plurality of wiring layers stacked in an alternating manner. At least one capacitor is disposed in at least one interior region. The at least one capacitor includes first and second electrodes. The at least one interior region exposes a portion of the metal core and a portion of at least one of the first and second portions adjacent to the metal core and at least one first via electrically connects one of the wiring layers of the first portion with the first and second electrodes.
Abstract:
An illustrative inventory of vehicle accessory control components includes a plurality of first circuit boards and a plurality of second circuit boards. The first circuit boards each have a substrate with a plurality of circuit elements supported on the substrate. The first circuit board substrates have an overall perimeter shape including an outer edge profile and a plurality of first deviations from the outer edge profile. The second circuit boards each have a substrate with a plurality of circuit elements supported on them. The second circuit board substrates have the overall perimeter shape including the same outer edge profile as the first circuit board substrates. The second circuit board substrates include a plurality of second deviations from the outer edge profile. At least one portion of the second deviations is different than the first deviations of the first circuit boards.