Abstract:
A semiconductor chip mounting is provided by molding a substrate of heat resistant synthetic resin, forming contact pads, which may be protrusions or recesses, on a surface of the substrate as it is molded. A circuit pattern extends to the contact pads which have a conductive surface. The chip is directly mounted on the substrate by soldering contact areas on the chip to the contact pads on the substrate, thus avoiding wire bonding.
Abstract:
An electronic display fixation device fixation device which comprises a flat platelike rest (1) on which an electronic display (2) is set, holding members (4, 5) extending from each one of the opposed longitudinal edges of the rest (1) for retaining the longitudinal end of the electronic display (2), fixing members (26, 27, 28) extending from the back surface of the platelike rest (1) for fixing the platelike rest on the circuit board, a pair of attachment members which are composed of projections (E) respectively formed on at least one of the holding members (4, 5) and on the rest and insertion holes (F) to which the abovementioned projections (E) are inserted, and engaging members (H, 41, 43) for attaching the holding members (4, 5) to the platelike rest (1) so as to be pivotaly movable and for engaging the holding members (4, 5) at the position where the electronic display (2) is retained.
Abstract:
An inlet type noise filter which can be directly mounted to a substrate or the like includes a casing, a pair of output terminals, a ground terminal projecting from a surface of the casing and a retaining portion projecting from the same surface of the casing that the terminals project from. The retaining portion extends through bores in the substrate and engage the substrate to secure the noise filter to the substrate. The terminals can then be operatively electrically connected by soldering or the like to conductive patterns on the substrate.
Abstract:
A leadless ceramic chip carrier for surface mounting on an epoxy printed circuit board is shown featuring an arrangement for relieving the thermally induced stress by progressively lengthening the attaching solder pillars as the distance from the center line of the ceramic chip increases to avoid exceeding the elastic limits of the solder.
Abstract:
A substrate which serves as an element for building an electronic module for ordnance applications comprising a body portion, for receiving electronic components, and a plurality of tab means extending therefrom for interlocking with complementary tab means on another similar substrate. The tab means may extend from the top, bottom, and/or sides of the substrate, and serve to mechanically and electrically interconnect with complementary tab means or apertures on adjacent substrates to form an electronic module of high mechanical strength and reliability. Such an electronic module may be assembled from at least three substrates. Each substrate has at least two tab means on each side edge thereof.
Abstract:
Ceramic disc capacitors for printed circuit boards having radial leads in the plane of the disc and integral standoff feet between the leads.