摘要:
A load frame has an open region exposing a surface of an electronic component. A heat sink is disposed on the load frame and has a surface in thermal contact with the surface of the electronic component. A non-influencing fastener is disposed within a bore in the heat sink and threaded into the load frame for securing the heat sink to the load frame. The non-influencing fastener includes a screw with a head; a tapered ring disposed below the head of the screw and having a tapered lower peripheral surface; a sealing ring engaging the tapered lower peripheral surface of the tapered ring; and a load washer disposed between the sealing ring and the load frame. Compression of the rings by turning of the screw into the load frame causes the sealing ring to expand against the bore of the heatsink. Preferably, the sealing ring has a curved outer surface.
摘要:
A portable testing apparatus operable with a force applying apparatus for testing loading characteristics on an integrated circuit assembly coupled to a circuit board. Included is a housing assembly having a size and shape to simulate an integrated circuit assembly to be tested; a loading element coupled for movement relative to the housing assembly and engageable with a load detecting system for transferring forces thereto in response to forces applied by a force applying apparatus; an interposer which mates the housing assembly to a circuit board; and, a load detecting system associated with the housing assembly for providing signals representative of characteristics of loading forces applied thereto by a force applying apparatus, whereby the load delivery characteristics of a force applying apparatus can be determined. A method of testing is also provided.
摘要:
A multichip module subassembly is disclosed which provides for a heatsink, a thermal interface, a module cap upon which a multichip module is mounted, a land grid array interposer, and an assembly cover. The module cap has shimmed load posts and adjustable brackets for precise alignment and loading of the interposer onto the module. The cover may have a springplate for precise preloading of the interposer onto the multichip module for transportation. The multichip module subassembly is easily used as a field replaceable unit.
摘要:
An apparatus and method are disclosed to provide heat pipe cooling for semiconductor chips mounted on a module. Each chip is provided its own heat pipe for cooling. A piston on the end of each heat pipe is loaded against each chip with a predetermined force without the need for counting turns of a screw or use of torque measurement tools. Each heat pipe draws heat away from the chip it is loaded against, carrying the heat to a heat sink for dissipation into the ambient. A large multichip module can be loaded against a land grid array interposer with uniform loading of the interposer. This interposer loading is accomplished independently of the loading of the heat pipes against the chips.
摘要:
Improved methods, systems, and apparatuses are disclosed for testing LGA devices. One example embodiment include vertical routing of test nest assembly cooling lines in order to minimize the test nest footprint and increase available test sites on a single test card. Another example embodiment includes isolating and adjusting external loads and moments into the heatsink/cold plate, wherein these loads and moments involve controlling the centroid to restore more ideal thermal performance of the heatsink/chip interface. Still another example embodiment includes a nest architecture facilitating easy and low-cost replacement of LGA sockets. Finally, another example embodiment includes efficient condensation control of test nest assembly parts by using dry-air exhaust.
摘要:
An apparatus and method therefore mount an array of different heatsinks to a closely packed array of data processing elements utilized within a data processing system. The apparatus includes a metal frame with multiple apertures in the bottom to allow access to the tops of the devices for which heatsinks will be provided. The metal frame has multiple apertures that allow access to the tops of the data processing elements underneath. The metal frame serves as a containment vehicle for multiple heatsinks, and also provides rigidity to the printed circuit board in the particularly vulnerable vicinity of the corners where the devices are attached to the printed circuit board.
摘要:
Two substrates are produced each with a planar, mirror-image matrix of metal contacts in a surface wiring layer. The substrates are positioned with the matrices in parallel confrontation which defines pairs of confronting contacts. A metal ball is positioned between each pair of contacts with a respective volume of joining material between the ball and each of the two respective contacts. The volumes of joining material are simultaneously melted to allow surface tension to align the substrates and to accurately center the balls between each respective pairs of contacts in a plane defines by the matrix of balls.
摘要:
Improved methods, systems, and apparatuses are disclosed for testing LGA devices. One example embodiment include vertical routing of test nest assembly cooling lines in order to minimize the test nest footprint and increase available test sites on a single test card. Another example embodiment includes isolating and adjusting external loads and moments into the heatsink/cold plate, wherein these loads and moments involve controlling the centroid to restore more ideal thermal performance of the heatsink/chip interface. Still another example embodiment includes a nest architecture facilitating easy and low-cost replacement of LGA sockets. Finally, another example embodiment includes efficient condensation control of test nest assembly parts by using dry-air exhaust.
摘要:
Improved methods, systems, and apparatuses are disclosed for testing LGA devices. One example embodiment include vertical routing of test nest assembly cooling lines in order to minimize the test nest footprint and increase available test sites on a single test card. Another example embodiment includes isolating and adjusting external loads and moments into the heatsink/cold plate, wherein these loads and moments involve controlling the centroid to restore more ideal thermal performance of the heatsink/chip interface. Still another example embodiment includes a nest architecture facilitating easy and low-cost replacement of LGA sockets. Finally, another example embodiment includes efficient condensation control of test nest assembly parts by using dry-air exhaust.
摘要:
Improved methods, systems, and apparatuses are disclosed for testing LGA devices. One example embodiment include vertical routing of test nest assembly cooling lines in order to minimize the test nest footprint and increase available test sites on a single test card. Another example embodiment includes isolating and adjusting external loads and moments into the heatsink/cold plate, wherein these loads and moments involve controlling the centroid to restore more ideal thermal performance of the heatsink/chip interface. Still another example embodiment includes a nest architecture facilitating easy and low-cost replacement of LGA sockets. Finally, another example embodiment includes efficient condensation control of test nest assembly parts by using dry-air exhaust.