Abstract:
A method for forming interconnections within a column grid array is provided. The method involves casting one or more columns with at least a compliant core material that increases flexibility between an electronic component and a printed wiring board by at least a factor of two over metallic-based solder columns, and forming the one or more columns to length for interconnecting between the electronic component and the printed wiring board. The method also involves forming a conductive material for the one or more columns to provide electrical interconnection between the electronic component and the printed wiring board.
Abstract:
A component for insertion into a hole in a multiple-layer substrate enables impedance matching of the substrate. The component comprises a conductive ground core arranged to extend through multiple-layers of the substrate when the component is inserted, a dielectric layer laterally encasing the conductive ground core, and a signal conductor layer coupled lateral to the dielectric layer.
Abstract:
A method for forming interconnections within a column grid array is provided. The method involves casting one or more columns with at least a compliant core material that increases flexibility between an electronic component and a printed wiring board by at least a factor of two over metallic-based solder columns, and forming the one or more columns to length for interconnecting between the electronic component and the printed wiring board. The method also involves forming a conductive material for the one or more columns to provide electrical interconnection between the electronic component and the printed wiring board.
Abstract:
A component for insertion into a hole in a multiple-layer substrate enables impedance matching of the substrate. The component comprises a conductive ground core arranged to extend through multiple-layers of the substrate when the component is inserted, a dielectric layer laterally encasing the conductive ground core, and a signal conductor layer coupled lateral to the dielectric layer.
Abstract:
An engineered transmission line for transmitting high-frequency data signals between two points of connection includes a dielectric body and a plurality of conductive elements disposed thereon, with the plurality of conductive elements being arranged in pairs for differential signal transmission. In one embodiment, the dielectric body is solid and has its conductive elements supported on its exterior surface. In another embodiment, the dielectric body is extruded and has grooves or raised lands formed therein. The grooves or lands support conductive elements formed thereon by a suitable plating process. A ground plane may be provided as a base layer of the dielectric body. Enlarged conductive surfaces may also be provided on the body which have a greater surface area than those intended for use with the signal channels. The enlarged surfaces are utilized to carry power.
Abstract:
A leadless high density connector including a plurality of connector pins each having multiconductor pins electrically connected to solder balls on the back side of the connector for interconnection to a PWB. The solder balls form a ball grid array (BGA), which replaces thin gull wing leads used on connectors of prior art. The use of BGA technology as applied to high density connectors provides a plurality of benefits associated with BGA technology. The signal carrying capacity of the connector is increased since the bottom surface of the connector is available for interconnecting signal paths rather than being limited to the peripheral edges as common for leaded packages. The resulting profile of the connector is substantially reduced allowing increased component and wiring density. The resulting bond strength using BGA technology is greater than that with a leaded equivalent due to the increased bond surface area and resulting anchoring effect. Therefore, BGA technology allows significantly increased yields over connectors using leads as known in prior art. The electrical characteristics of a connector according to the present invention is substantially improved since the inductance per pin is reduced using BGA as compared to leads. In this manner, connectors according to the present invention are more suitable for high speed applications especially when combined with the ability to interleave ground and signal connections.
Abstract:
Plated-through-holes of printed circuit boards are segmented to provide a plurality of conductors. Matching connector pins having insulating cores and patterned conductive portions are mated with the conductors of the plated-through-holes. Each of the conductors of the holes can be connected to a different one of the patterns on the printed circuit boards thus forming a high density interconnect system.
Abstract:
A Z-directed connector component for insertion into a printed circuit board and providing electrical connections to internal conductive planes contained with the PCB and/or to external conductive traces on the surface of the PCB. In one embodiment the Z-directed component is housed within the thickness of the PCB allowing other components to be mounted over it. The body of the Z-directed connector component may contain one or more conductors and may include one or more surface channels or wells extending along at least a portion of the length of the body. Methods for mounting Z-directed components are also provided.
Abstract:
Termination assemblies for terminating high-frequency data signal transmission lines include housings with one or more cavities that receive ends of the transmission line therein. The transmission line typically includes a dielectric body and a plurality of conductive elements disposed thereon, with the plurality of conductive elements being arranged in pairs for differential signal transmission. The termination assemblies, in one embodiment include hollow end caps that are formed from a dielectric and which have one or more conductive contacts or plated surfaces disposed on or within the cavity so that they will frictionally mate with the conductive traces on the transmission line. In another embodiment, a connector housing is provided with a center slot and a plurality of dual loop contacts to provide redundant circuit paths and low inductance to the termination assembly. A coupling element may be utilized in the slot to achieve a desired level of coupling between the termination contacts.