DE102014105957B3 - Method for producing a solder joint - Google Patents
Method for producing a solder joint Download PDFInfo
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- DE102014105957B3 DE102014105957B3 DE102014105957.3A DE102014105957A DE102014105957B3 DE 102014105957 B3 DE102014105957 B3 DE 102014105957B3 DE 102014105957 A DE102014105957 A DE 102014105957A DE 102014105957 B3 DE102014105957 B3 DE 102014105957B3
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- solder
- holding device
- carrier
- solderable surface
- partner
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
- B23K10/027—Welding for purposes other than joining, e.g. build-up welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
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- H—ELECTRICITY
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
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- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3452—Solder masks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
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- H01L2224/26152—Auxiliary members for layer connectors, e.g. spacers being formed on an item to be connected not being a semiconductor or solid-state body
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- H01L2224/291—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2224/29101—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of less than 400°C
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- H01L2224/831—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector the layer connector being supplied to the parts to be connected in the bonding apparatus
- H01L2224/83101—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector the layer connector being supplied to the parts to be connected in the bonding apparatus as prepeg comprising a layer connector, e.g. provided in an insulating plate member
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- H01L2224/83136—Aligning involving guiding structures, e.g. spacers or supporting members
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- H01L2224/83192—Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on another item or body to be connected to the semiconductor or solid-state body
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- H01L2224/83815—Reflow soldering
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- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
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- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
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- H01L2924/156—Material
- H01L2924/15786—Material with a principal constituent of the material being a non metallic, non metalloid inorganic material
- H01L2924/15787—Ceramics, e.g. crystalline carbides, nitrides or oxides
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3485—Applying solder paste, slurry or powder
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Abstract
Ein Aspekt der Erfindung betrifft ein Verfahren zur Herstellung einer Lötverbindung zwischen einem Träger (2) und einem Lötpartner (1). Hierzu werden ein Träger (2), ein Lötpartner (1) und ein Lot (41) bereitgestellt. Der Träger (2) weist eine lötfähige Oberfläche (211) auf, auf der eine stoffschlüssig mit dieser verbundene Haltevorrichtung (3) erzeugt wird. Das Lot (41) wird in der Haltevorrichtung (3) angeordnet und der Lötpartner (1) wird auf das Lot (41) aufgelegt. Zwischen dem Träger (2) und dem Lötpartner (1) wird eine stoffschlüssige Verbindung hergestellt, indem das Lot (41) zu einem flüssigen Lot (42) aufgeschmolzen und dieses nachfolgend bis unter seinen Schmelzpunkt abgekühlt wird. Die Haltevorrichtung (3) ist dabei so ausgebildet, dass sie bis zum Herstellen der stoffschlüssigen Verbindung (43) ein Verrutschen des Lötpartners (1) relativ zum Träger (2) begrenzt.One aspect of the invention relates to a method for producing a solder joint between a carrier (2) and a solder partner (1). For this purpose, a carrier (2), a soldering partner (1) and a solder (41) are provided. The carrier (2) has a solderable surface (211) on which a retaining device (3) connected in a materially connected manner to it is produced. The solder (41) is arranged in the holding device (3) and the soldering partner (1) is placed on the solder (41). Between the carrier (2) and the soldering partner (1) a cohesive connection is made by the solder (41) is melted to a liquid solder (42) and this is subsequently cooled to below its melting point. The holding device (3) is designed so that it limits slipping of the soldering partner (1) relative to the carrier (2) until the material connection (43) is produced.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Lötverbindung. Bei der Herstellung von Lötverbindungen, beispielsweise wenn bei der Herstellung von Leistungshalbleitermodulen ein Halbleiterchip mit einem Schaltungsträger-Substrat oder ein Schaltungsträger-Substrat mit einer Bodenplatte verlötet wird, werden häufig vorgeformte Lotplättchen (”Preform Lot”) verwendet. Die Lotplättchen werden zwischen die miteinander zu verbindenden Teile eingelegt. Die miteinander zu verbindenden Teile mit dem Lotplättchen dazwischen liegen dabei vor dem Lötvorgang einen Stapel bildend lose aufeinander. Hierdurch besteht die Gefahr, dass die Teile und das Lotplättchen relativ zueinander verrutschen, was beispielsweise beim Transport auftreten kann, z. B. wenn der Stapel in eine Lötanlage eingefahren wird. Generell kann es bei einem Verrutschen zu Montagefehlern kommen, und/oder zu einer Beschädigung der Teile.The invention relates to a method for producing a solder joint. In the manufacture of solder joints, for example, when soldering a semiconductor chip to a circuit carrier substrate or a circuit substrate to a bottom plate in the manufacture of power semiconductor modules, preformed solder wafers are often used. The solder plates are inserted between the parts to be joined together. The parts to be joined together with the solder plate in between are loosely forming a stack before the soldering process. As a result, there is a risk that the parts and the solder plate slip relative to each other, which may occur, for example during transport, z. B. when the stack is moved into a soldering machine. In general, slippage can lead to assembly errors and / or damage to the parts.
Um ein Verrutschen zu vermeiden, werden üblicherweise Lötschablonen oder Lötformen verwendet, die aufwändig sind in der Herstellung und die Verschleiß unterliegen, was zu einem hohen Wartungsaufwand bzw. zu hohen Kosten für die Wartung oder den Austausch führt.In order to avoid slippage, usually solder stencils or soldering dies are used, which are expensive to manufacture and subject to wear, which leads to high maintenance or high costs for maintenance or replacement.
Die
Aus der
Die
Die Aufgabe der Erfindung besteht darin, ein Verfahren zur Herstellung einer Lötverbindung bereitzustellen, das ein zielgenaues und wirtschaftliches Verlöten zweier Teile ermöglicht. Diese Aufgabe wird durch ein Verfahren zur Herstellung einer Lötverbindung gemäß Patentanspruch 1 gelöst. Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen.The object of the invention is to provide a method for producing a solder joint, which enables a precise and economical soldering of two parts. This object is achieved by a method for producing a solder joint according to
Bei dem Verfahren wird eine Lötverbindung zwischen einem Träger und einem Lötpartner hergestellt. Hierzu werden ein Träger, ein Lötpartner, sowie ein Lot bereitgestellt. Der Träger weist eine lötfähige Oberfläche auf. Auf dieser wird, durch eines der Verfahren Laserauftragsschweißen, Sprühkompaktieren, Plasmabeschichten, selektives Laserschmelzen, eine mit der lötfähigen Oberfläche stoffschlüssig verbundene Haltevorrichtung erzeugt, in der dann das Lot angeordnet wird. Außerdem wird der Lötpartner auf das in der Haltevorrichtung befindliche Lot aufgelegt.The method produces a solder joint between a carrier and a solder partner. For this purpose, a carrier, a solder partner, and a solder are provided. The carrier has a solderable surface. On this, by one of the methods laser deposition welding, spray compacting, plasma coating, selective laser melting, a cohesively connected to the solderable surface holding device is generated, in which then the solder is placed. In addition, the soldering partner is placed on the solder located in the holding device.
Zwischen dem Träger und dem Lötpartner wird durch Aufschmelzen des Lotplättchens zu einem flüssigen Lot sowie durch nachfolgendes Abkühlen des Lotes unter seinen Schmelzpunkt eine stoffschlüssige Verbindung zwischen dem Träger und dem Lötpartner erzeugt. Dabei ist die Haltevorrichtung so ausgebildet, dass sie bis zum Herstellen der stoffschlüssigen Verbindung ein Verrutschen des Lötpartners relativ zum Träger begrenzt.Between the carrier and the soldering partner, a cohesive connection between the carrier and the soldering partner is produced by melting the solder platelet into a liquid solder and by subsequent cooling of the solder below its melting point. In this case, the holding device is designed so that it limits slipping of the soldering partner relative to the carrier until the material connection is produced.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren erläutert. Es zeigen:The invention will be explained below with reference to embodiments with reference to the accompanying figures. Show it:
Soweit nicht anders angegeben, bezeichnen gleiche Bezugszeichen gleiche oder gleichwirkende Elemente.Unless otherwise indicated, like reference characters designate like or equivalent elements.
Der Träger
Die obere Metallisierungsschicht
Bei dem Isolationsträger
Die obere und/oder die untere Metallisierungsschicht
Unabhängig von der konkreten Ausgestaltung des Trägers
Wie weiterhin in
Unabhängig vom Verfahren zur Erzeugung der Haltevorrichtung
Wie in
In diesem Zustand wird zwischen dem Träger
Anstelle durch Laserauftragsschweißen kann eine Haltevorrichtung
Wie im Weiteren unter Bezugnahme auf die
Wie in
Wie weiterhin in
Das Schaltungsträger-Substrat
In diesem Zustand wird zwischen der Bodenplatte
Sofern bei einem Lötverfahren eine Verbindungsschicht
Wie in
Die Herstellung des Abstandhalters
Im Weiteren wird das Lotplättchen
Zwischen dem Träger
Auf dieselbe, anhand der
Im Weiteren wird nun bezugnehmend auf die
Zunächst wird, wie in
Nun kann, wie in
Danach werden diejenigen Bestandteile des Metallpulvers der Schichten
Unabhängig davon, nach welchem Verfahren eine Haltevorrichtung
Indem in den unterschiedlichen Schichten
Sofern es darauf, wie beispielhaft in
Bei sämtlichen Ausgestaltungen der Erfindung kann eine Haltevorrichtung
Bei sämtlichen Varianten der Erfindung muss das Lot
Für sämtliche Ausgestaltungen der Erfindung können, unabhängig von einander, folgende Kriterien gelten:
Gemäß einem ersten Kriterium kann die Höhe h3 der Haltevorrichtung
According to a first criterion, the height h3 of the holding
Gemäß einem zweiten Kriterium kann die Höhe h8 eines optional vorhandenen Abstandhalters
Die Höhen h3 und h8 sind dabei jeweils bezüglich der lötfähigen Oberfläche
Gemäß einem dritten Kriterium kann der Abstand d0 zwischen dem Lötpartner
Gemäß einem vierten Kriterium kann der in die Haltevorrichtung
Gemäß einem fünften Kriterium die Haltevorrichtung
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014105957.3A DE102014105957B3 (en) | 2014-04-29 | 2014-04-29 | Method for producing a solder joint |
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EP3261119A1 (en) * | 2016-06-21 | 2017-12-27 | Infineon Technologies AG | Power semiconductor module components and additive manufacturing thereof |
WO2018141621A3 (en) * | 2017-02-06 | 2018-10-25 | Siemens Aktiengesellschaft | Power module |
CN110373665A (en) * | 2019-07-02 | 2019-10-25 | 常州大学 | A kind of laser thermal spraying reproducing method of bearing shell |
US11348896B2 (en) | 2019-05-02 | 2022-05-31 | Audi Ag | Method for producing a semiconductor module by using adhesive attachment prior to sintering |
EP4084061A1 (en) * | 2021-04-28 | 2022-11-02 | Siemens Aktiengesellschaft | Circuit carrier and method for making an electrical connection with the same |
US11990447B2 (en) | 2018-01-19 | 2024-05-21 | Mitsubishi Electric Corporation | Semiconductor device and power conversion device |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3261119A1 (en) * | 2016-06-21 | 2017-12-27 | Infineon Technologies AG | Power semiconductor module components and additive manufacturing thereof |
WO2018141621A3 (en) * | 2017-02-06 | 2018-10-25 | Siemens Aktiengesellschaft | Power module |
US11990447B2 (en) | 2018-01-19 | 2024-05-21 | Mitsubishi Electric Corporation | Semiconductor device and power conversion device |
US11348896B2 (en) | 2019-05-02 | 2022-05-31 | Audi Ag | Method for producing a semiconductor module by using adhesive attachment prior to sintering |
CN110373665A (en) * | 2019-07-02 | 2019-10-25 | 常州大学 | A kind of laser thermal spraying reproducing method of bearing shell |
EP4084061A1 (en) * | 2021-04-28 | 2022-11-02 | Siemens Aktiengesellschaft | Circuit carrier and method for making an electrical connection with the same |
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