摘要:
A module having a stacked magnetic device and semiconductor device, and method of forming the same. In one embodiment, the module includes a printed wiring board including a patterned conductor formed on an upper surface thereof. The module also includes a magnetic core mounted on the upper surface of the printed wiring board proximate the patterned conductor and a semiconductor device mounted on an upper surface of the magnetic core.
摘要:
A reflective element, such as a mirror, includes a substrate and a reflective layer formed thereon. The substrate comprises at least one thixotropic metal alloy, which is injected into a mold to form the shape desired for the reflective element. The reflective element may also include an interface layer comprising a thermoset material, such as an epoxy resin, formed between the substrate and the reflective layer to increase the smoothness of the substrate.
摘要:
A molded encapsulated electronic component containing a silicon device, chip, or integrated circuit characterized by ease of fabrication and minimum possibility of breakage or dislocation, included a lead frame bearing a compressed, thin elastomeric, anisotropic, electrically conductive compliant interconnect on which the silicon integrated circuit is positioned--all mounted within an all-enveloping plastic.
摘要:
A power magnetic device, a method of manufacture therefor and a power converter. The power magnetic device includes: (1) an isolation transformer having a primary winding and a secondary winding, (2) a switch coupled to the primary winding, (3) a rectifier coupled to the secondary winding and (4) an encapsulant substantially surrounding the isolation transformer, the switch and the rectifier to join the isolation transformer, the switch and the rectifier into an integrated package, the integrated package having: (a) a first power input coupled to a first end of the primary winding, (b) a second power input coupled to the switch, (c) first and second power outputs coupled to the rectifier circuit and (d) a control input coupled to the switch, the control input allowing the switch to be controlled to couple the primary winding to a source of electrical power, the power magnetic device thereby capable of employing the isolation transformer and the rectifier to convert electrical power into DC electrical power.
摘要:
A module having a discrete passive element and a semiconductor device, and method of forming the same. In one embodiment, the module includes a patterned leadframe, a discrete passive element mounted on an upper surface of the leadframe, and a thermally conductive, electrically insulating material formed on an upper surface of the discrete passive element. The module also includes a semiconductor device bonded to an upper surface of the thermally conductive, electrically insulating material.
摘要:
A module having a discrete passive element and a semiconductor device, and method of forming the same. In one embodiment, the module includes a patterned leadframe, a discrete passive element mounted on an upper surface of the leadframe, and a thermally conductive, electrically insulating material formed on an upper surface of the discrete passive element. The module also includes a semiconductor device bonded to an upper surface of the thermally conductive, electrically insulating material.
摘要:
A fiber array faceplate for receiving, precisely positioning and immobilizing bare optical fiber. The faceplate includes a plate arrangement of at least two mutually parallel plates each having an array of fixed apertures. At least one of the plates is movable in translational motion such that the at least two plates collectively define an array of adjustable-size apertures that can open wide enough to readily receive bare optical fiber and then decrease in size to immobilize the received optical fiber.
摘要:
In accordance with the invention, an optical fiber array comprises a substrate providing a planar array of optical fibers. The optical fibers are parallel to an array axis, but the fiber ends present smooth, polished surfaces angled from the array axis to minimize return loss of light directed along the axis. Three embodiments are described. The first is a series of 1×n strip arrays each mounted at an angle to the array axis to form a saw tooth configuration faceplate. The holes in each strip are also angled to compensate for the angled mount. A second embodiment uses an angled planar faceplate having tapered holes. A third embodiment uses an angled faceplate planar with double-tapered holes to obtain the angled end surfaces. In each embodiment, the fiber ends are substantially coplanar with the faceplate surface but the ends are angled with respect to the array axis.
摘要:
A faceplate for network switching apparatus is formed of a multi-layered structure having a first material layer and a second material layer. An outer portion of the faceplate is formed of the first material layer. The first material layer is an anti static material. An inner portion of the faceplate is formed of the second material layer. The second material layer is formed of an electromagnetic interference (EMI) shielding material. The first material layer and the second material layer are formed of polymeric materials which are rigid after extrusion. In an alternative embodiment, a gasket is coextruded with the first material layer and the second material layer. The gasket protrudes laterally from the inner portion of the faceplate along the length thereof. The gasket is formed of a third material layer. The third material layer is an EMI shielding material. The third material layer is formed of a polymeric material which is flexible after extrusion.
摘要:
Electronic devices include at least two electronic components in electrical contact by a connector, the components being at least partially encased by a molded resin. Preferably, the connector is a compression connector and the molded resin maintains a compressive force on the connector to ensure that reliable contact is maintained.