摘要:
The present disclosure comprises methods, apparatus, components, and techniques for soldering. A soldering tool includes opposing jaw pieces adapted to grip and/or compress work pieces while applying heat. The work pieces can be heated to a temperature at or above the melting point of a solder material, whereupon the solder may be melted and applied at the work pieces. The soldering tool may be removed from the work pieces, thereby allowing the solder to solidify and form a soldered joint. Soldering tools may be powered by portable, rechargeable, and/or detachable battery packs that are readily accessible and commonly used for a wide variety of hand-operated power tools.
摘要:
An intelligent soldering cartridge that includes: a housing; a solder tip; a heater for heating the solder tip; a storage device for storing information about characteristics of the cartridge; a processor for retrieving the information about characteristics of the cartridge, monitoring the power level delivered to the solder tip to detect liquidus occurrence at a solder joint, determining a thickness of an intermetallic compound (IMC) of the solder joint using some of the retrieved information, determining whether the thickness of the IMC is within a predetermined range, and generating an indication signal indicating that a reliable solder joint connection is formed when the thickness of the IMC is within the predetermined range; and an interface for transmitting the indication signal.
摘要:
An apparatus includes a tool head configured for bonding to establish 100 or more electrical and mechanical connections between a silicon chip having a thickness of about 50 microns (μm) or smaller and a substrate, wherein 100 or more solder bumps set on a plurality of contacts on the silicon chip or a plurality of contacts on the substrate are melted by heating between the plurality of contacts of the silicon chip and the substrate, and wherein the melted solder bumps are solidified by cooling using forced convection of air flowing from around the silicon chip. The tool head includes a pyrolytic graphite sheet configured to be used in direct contact with the silicon chip, and having a thickness between about 75 μm and 125 μm.
摘要:
A heating head for soldering and de-soldering surface mount devices (SMD's) using hot inert gas or air is comprised of a handle in which there is placed a heater sub-assembly on which there is secured a quick connect mechanism for mounting a heating nozzle. The heater sub-assembly is enclosed in a shroud and is secured to the end of the handle by a thermal insulating ring, such shroud housing a ceramic rod having elongated bosses on which a heating element is secured, while a laminar flow equilizer is used to provide more uniform gas flow across the heating element. Quick connect mechanism is secured to the heater sub-assembly shroud and uses a spring loaded winged locking mechanism to the secure heating nozzles to the heater head. In one embodiment, the heating nozzles have a truncated pyramid shaped chamber to which individual end nozzles are attached for directing gas flow.
摘要:
An improvement in a reflow soldering apparatus for bonding a connector element such as flexible circuitry or a pin type input/output (I/O) connector to a printed circuit board (PCB) is disclosed wherein a fixture tray included in the apparatus automatically aligns or self levels itself with the heating bars, or thermodes, of the apparatus. The fixture tray includes a body for supporting the connector/PCB assembly and cylindrical rods extending from the body. The rods are rotatably supported in corresponding grooves on the surface of the fixture tray table. As a thermode is pressed onto the connector/PCB assembly, the fixture tray rotates about its axis of rotation until the work area is aligned with the thermode. In a sandwich type soldering application including a pair of thermodes for simultaneously soldering opposite sides of a connector/PCB assembly, the fixture tray rests on an upper plate of a tray table supported by resilient means such as springs. Pressing an upper thermode onto the upper work surface of the connector/PCB assembly causes the work surface to rotate into alignment with the thermodes, and further causes the upper plate to descend until the bottom work surface of the connector/PCB assembly contacts the lower thermode prior to initiation of a reflow soldering cycle.
摘要:
An electrode for an electrically heated soldering head of a soldering machine comprises: a current-fed resistive element for generating heat; a contacting member for contacting an article being soldered; an insulating layer effective for coupling the current-fed resistive element and the contacting member to one another such that the element and the member are thermally connected but electrically insulated from one another; and electrical connecting wires so connected as to ensure that the electrical potential on the contacting member is about equal to the electrical potential of the article being soldered.
摘要:
An electrically heated thermode mounts to a support movable to position the thermode for multiple lead reflow soldering and includes a flat resistance element folded on its flat side in a U-shape structure in which the bight portion forms the pressing portion and the legs the terminal portions of the thermode. To overcome a problem arising where a group of joints to be soldered have varying height tops, the way in which the thermode is mounted to the movable support provides freedom of rotational movement of the thermode relative to the support while providing a low resistance electrical connection between support and the thermode terminal portions. To overcome a problem arising because opposite end joints sink more heat than interior joints, terminal plates are shaped and connected to the terminal portions so as to distribute a sheet of current in a way that more of the current flows along side edges than along the interior portion of the U-shaped structure.
摘要:
A tool for micro-soldering the connecting tags of an integrated circuit chip to corresponding terminals on a substrate by Joule heating includes a high conductivity bit having a planar bottom face adapted to contact the tags and press them against the terminals while applying sufficient heat to the tags to solder them to the terminals. The face has a perimeter and a centrally apertured portion adapted to receive and accommodate the circuit chip. The apertured portion forms a geometric loop on the planar face having opposite sides spaced from each other and adapted to contact the tags of the chip. A continuous high electrical conductivity flange extends upwardly from all portions of the perimeter of the face to provide rigidity to the bit.A pair of high conductivity strips extend from facing segments of the flange for applying current to and removing current from the flange on opposite sides of the loop so that a pair of symmetrical current half loops extend about the face between the opposite sides thereof. Each strip has a reduced cross-sectional area symmetrical with the side of the face and removed from the intersection of the strip with the flange.