摘要:
The details of a printed wiring board (PWB) sub-assembly and the method of producing the same are described. The sub-assembly comprises a printed circuit board electrically joined through a plurality of connections to one or more area array devices, such as modules or printed wiring boards. The sub-assembly can serve as a part of an original assembly. The sub-assembly can function as an after market item that can be readily substituted as a replacement for a failed component wherein the dimensional space between the printed circuit board and one or both of the area array devices must provide sufficient clearance for surface mounted devices.
摘要:
A method and apparatus for interconnecting an electronic module to a substrate through resilient wire conductors in an interposer arrangement. A carrier layer of insulating material with an array of apertures, arranged to align with both the electrical pads on an electronic module and electrical contacts on a substrate, each hold, for example, a resilient wadded wire connector. Each connector extends through the aperture provided and beyond the upper and lower surfaces of the carrier layer. Each resilient wadded wire connector and aperture is encapsulated with a elastomeric insulating material sufficiently deformable so as to allow said resilient wadded wire connector to deform upon application of a normal force from each side tending to depress the connector into its aperture. The encapsulation prevents loss or smear of a wadded wire connector when handling.
摘要:
A method and apparatus for interconnecting an electronic module to a substrate through resilient wire conductors in an interposer arrangement. A carrier layer of insulating material with an array of apertures, arranged to align with both the electrical pads on an electronic module and electrical contacts on a substrate, each hold, for example, a resilient wadded wire connector. Each connector extends through the aperture provided and beyond the upper and lower surfaces of the carrier layer. Each resilient wadded wire connector and aperture is encapsulated with a elastomeric insulating material sufficiently deformable so as to allow said resilient wadded wire connector to deform upon application of a normal force from each side tending to depress the connector into its aperture. The encapsulation prevents loss or smear of a wadded wire connector when handling.
摘要:
A method and apparatus for interconnecting an electronic module to a substrate through resilient wire conductors in an interposer arrangement. A carrier layer of insulating material with an array of apertures, arranged to align with both the electrical pads on an electronic module and electrical contacts on a substrate, each hold, for example, a resilient wadded wire connector. Each connector extends through the aperture provided and beyond the upper and lower surfaces of the carrier layer. Each resilient wadded wire connector and aperture is encapsulated with a elastomeric insulating material sufficiently deformable so as to allow said resilient wadded wire connector to deform upon application of a normal force from each side tending to depress the connector into its aperture. The encapsulation prevents loss or smear of a wadded wire connector when handling.
摘要:
A method and system for creating a stock index for a group of investment management companies is disclosed. The method may include obtaining first trade information for each security representative of the group of investment management companies during a first time period, aggregating the first trade information for a predetermined time period, storing the aggregated first trade information, calculating from the aggregated first trade information an index for the group of investment management companies, determining a standardized measure of the index based on the aggregated first trade information obtained in the first time period, and periodically recalculating the index based on second trade information for each security representative of the group of investment management companies during a second time period.
摘要:
A method and system for creating a stock index for a group of investment management companies is disclosed. The method may include obtaining first trade information for each security representative of the group of investment management companies during a first time period, aggregating the first trade information for a predetermined time period, storing the aggregated first trade information, calculating from the aggregated first trade information an index for the group of investment management companies, determining a standardized measure of the index based on the aggregated first trade information obtained in the first time period, and periodically recalculating the index based on second trade information for each security representative of the group of investment management companies during a second time period.
摘要:
A method and system for creating a stock index for a group of investment management companies is disclosed. The method may include obtaining first trade information for each security representative of the group of investment management companies during a first time period, aggregating the first trade information for a predetermined time period, storing the aggregated first trade information, calculating from the aggregated first trade information an index for the group of investment management companies, determining a standardized measure of the index based on the aggregated first trade information obtained in the first time period, and periodically recalculating the index based on second trade information for each security representative of the group of investment management companies during a second time period.
摘要:
A connector for a voltage regulator module (VRM) that provides for a parallel coupling to a printed wiring board (PWB) without surface mounting of the VRM includes a plurality of conductive power blades mounted within slots of insulators. The VRM connector is coupled to PWB and VRM and provides for spacing between the VRM and the PWB. The VRM connector provides for high current flow and reduced circuit heating.
摘要:
A method and apparatus for electrically connecting two substrates using resilient wire bundles captured in apertures of an interposer by a retention film. The interposer comprises an electrically non-conductive carrier having two surfaces and apertures extending from surface to surface. A resilient wire bundle is disposed in each aperture. An electrically non-conductive retention film is associated with one or both surfaces of the carrier and has an orifice overlying each aperture. The width of each orifice is smaller than that of the underlying aperture to thereby enhance retention of the resilient wire bundle within the aperture. Pin contacts of one or both of the substrates make electrical contact with the resilient wire bundles by extending through the orifices of the retention film and partially through the apertures. In one embodiment, the interposer is a land grid array (LGA) connector that connects an electronic module and a printed circuit board (PCB).
摘要:
A method and structure is disclosed for forming a removable interconnect for semiconductor packages, where the connector is adapted to repeatedly change from a first shape into a second shape upon being subjected to a temperature change and to repeatedly return to the first shape when not being subjected to the temperature change. The connector can be disconnected when the connector is in its second shape and the connector cannot be disconnected when the connector is in its first shape.