Abstract:
The present subject matter relates to the field of fabricating microelectronic devices. In at least one embodiment, the present subject matter relates to forming an interconnect that has a portion thereof which becomes debonded from the microelectronic device during cooling after attachment to an external device. The debonded portion allows the interconnect to flex and absorb stress.
Abstract:
Methods for reworking a solder containing one or more joined members are described herein. Such methods can include applying a disintegrating agent to a solder containing a solder material, disintegrating the solder material to form a disintegrated solder material, and removing the disintegrated solder material from the solder. Such methods can also include applying a disintegrating agent containing bismuth to a solder containing a solder material, and heating the solder to liquefy the disintegrating agent. Such methods can also include applying a disintegrating agent containing a bismuth alloy to a solder having a solder material that contains metal nanoparticles, and heating the solder to liquefy the bismuth alloy.
Abstract:
A soldering apparatus for connecting solar cells (1) includes an induction heat source to connect cell conducting tracks, provided with soldering medium, with electric conductors. The heat source has a high-frequency generator and an inductor loop (32) in which the flow of a high-frequency current causes a high- frequency magnetic field to induce in the conducting track and in the electric conductor arranged along the conducting track eddy currents that generate the heat that is necessary for the soldering operation. The inductor loop (30) includes a U-shaped loop element that has narrowings and widening in one arm (31) that is positioned closer to the conductor. Ferrite beads (31) and ferrite tubes at the widening concentrate the magnetic field to optimize the heat development in the soldering zone and thus also save energy.
Abstract:
The system contains a substrate having at least one electrical trace formed thereon. An opening is formed in the substrate. The opening comprising at least one wall. An electrically conductive fill is formed in the opening. The electrically conductive fill is chemically bonded to the wall and electrically contacted with the electrical trace.
Abstract:
A system for manufacturing electrical components includes a reflow chamber having an inlet port and an outlet port. The inlet port receives a web of interconnected electrical components having a conductive coating into the reflow chamber. The outlet port discharges the web from the reflow chamber. The reflow chamber directs the web of interconnected electrical components along a predetermined pathway through the reflow chamber. The reflow chamber retains a heated and saturated vapor to heat the conductive coating as the web passes along the pathway through the chamber to reflow the conductive coating about the electrical components.
Abstract:
The system contains a substrate having at least one electrical trace formed thereon. An opening is formed in the substrate. The opening comprising at least one wall. An electrically conductive fill is formed in the opening. The electrically conductive fill is chemically bonded to the wall and electrically contacted with the electrical trace.
Abstract:
Gegenstand der Erfindung ist ein Bauteil (11) wie z. B. eine Stromschiene (11) zur Führung eines elektrischen Stromes. Diese ist aus Al oder einer Al-Legierung gefertigt und weist mindestens ein Kontaktstück (19) aus Cu oder einer Cu-Legierung auf. Erfindungsgemäß ist vorgesehen, dass das Kontaktstück(19) über eine Lötverbindung (18) mit der Stromschiene (11) verbunden ist, wobei eine Vermittlerschicht (16) zur Verbesserung der Lötverbindung zum Einsatz kommt. Es wird dadurch vorteilhaft möglich, die Stromschiene aus einem kostengünstigen Material (Al) zu fertigen, wobei die Druckstabilität der Kontaktstücke (19) aufgrund der Werkstoffwahl (Cu) gewährleistet ist. Weiterhin ist als Verfahren zur Herstellung der Vermittlerschicht (16) erfindungsgemäß ein Kaltgasspritzen vorgesehen. Dieses führt an einer Grenzfläche (21) zwischen der Stromschiene (11) und der Vermittlerschicht (16) zu einer Verkrallung, wodurch die hervorragende Haftung der Vermittlerschicht (16) zustande kommt.