DE19601055B4 - Method and device for soldering surfaces - Google Patents
Method and device for soldering surfaces Download PDFInfo
- Publication number
- DE19601055B4 DE19601055B4 DE19601055A DE19601055A DE19601055B4 DE 19601055 B4 DE19601055 B4 DE 19601055B4 DE 19601055 A DE19601055 A DE 19601055A DE 19601055 A DE19601055 A DE 19601055A DE 19601055 B4 DE19601055 B4 DE 19601055B4
- Authority
- DE
- Germany
- Prior art keywords
- solder
- stamp
- pinhole
- container
- height
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005476 soldering Methods 0.000 title claims abstract description 12
- 229910000679 solder Inorganic materials 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000005484 gravity Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0607—Solder feeding devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4853—Connection or disconnection of other leads to or from a metallisation, e.g. pins, wires, bumps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/11—Manufacturing methods
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0256—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for soldering or welding connectors to a printed circuit board
-
- 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
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3468—Applying molten solder
-
- 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
- B23K2101/40—Semiconductor devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L2224/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
- H01L2224/13001—Core members of the bump connector
- H01L2224/13099—Material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01005—Boron [B]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01082—Lead [Pb]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/014—Solder alloys
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0134—Drum, e.g. rotary drum or dispenser with a plurality of openings
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/044—Solder dip coating, i.e. coating printed conductors, e.g. pads by dipping in molten solder or by wave soldering
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Verfahren zum Beloten von elektronischen Bauelementen mit flüssigem Lot (5), das in einem einseitig offenen Behälter (1) mittels eines Stempels (4) und eines Stellmotors aus einer Anfangshöhe I durch eine Lochblende (2) mit definierten Abmessungen gebracht wird und das zu belotende Bauelement (7) mit seiner benetzbaren Fläche auf das Lot aufgesetzt wird, dadurch gekennzeichnet, dass das flüssige Lot (5) in eine durch den Stempel (4) definierte Arbeitshöhe II gebracht wird, in welcher eine definierte Menge des Lotes (5) durch die Lochblende (2) zu einem balligen Lotkörper (6) mit definierten Abmessungen geformt wird.Method for soldering electronic components with liquid solder (5), which is brought in a container (1) open on one side by means of a stamp (4) and a servomotor from an initial height I through a perforated screen (2) with defined dimensions, and the one to be soldered Component (7) with its wettable surface is placed on the solder, characterized in that the liquid solder (5) is brought to a working height II defined by the stamp (4), in which a defined amount of the solder (5) is brought about by the Pinhole (2) is formed into a spherical solder body (6) with defined dimensions.
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Beloten von Flächen, insbesondere von elektronischen Bauelementen, gemäß dem Oberbegriff der Ansprüche 1 und 5.The invention relates to a method and a device for soldering surfaces, especially electronic ones Components, according to the generic term of claims 1 and 5.
Zur Erzielung einer gleichmäßig hohen Produktqualität und zur Senkung von Ausschussquoten ist es erforderlich, Lötmontagen von elektronischen Bauelementen so durchzuführen, dass eine möglichst homogene Verbindung zwischen Bauelement und Trägersubstanz entsteht.To achieve a uniformly high product quality and to reduce reject rates it is necessary to solder assemblies of electronic components in such a way that a possible homogeneous connection between component and carrier substance.
Es sind bereits Verfahren und Vorrichtungen bekannt, mit denen versucht wird, auf benetzbaren Flächen eine weitgehend oxyd- und lunkerfreie Lotschicht auf zubringen.Methods and devices are already known with which it is attempted to and blow-free solder layer to apply.
In der
Nachteilig ist der hohe Zeitaufwand zur Erzeugung großer Lotflächen, wie sie insbesondere für das Beloten von Bauelementen der Leistungselektronik benötigt werden sowie auch die technische Beherrschbarkeit der Lotdosierung durch den vorgeschlagenen Verteiler in Abhängigkeit von der Viskosität des Lots und der Benetzbarkeit der zu beschichtenden Unterlagen.The disadvantage is the high expenditure of time to generate large solder surfaces, like you especially for that Soldering components of power electronics are required as well as the technical controllability of the solder dosing the proposed distributor depending on the viscosity of the solder and the wettability of the documents to be coated.
In der
In der Zeitschrift EPP, ISSN 0943-0962,
September 1994, Seite 49-50, ist eine Vorrichtung mit Ober- und
Unterstempel und einer siebartigen Vorrichtung wie in der Veröffentlichung
Nachteilig ist bei diesen vorgeschlagenen Lösungen, dass durch Materialspannungen und geometrische Ungenauigkeiten des Siebes Verbiegungen auftreten, die keine zuverlässig reproduzierbare homogene Belotung von größeren Flächen an elektronischen Bauelementen gewährleisten. Durch die hohe Oberflächenspannung des flüssigen Lots und infolge der Kohäsionskräfte zwischen dem flüssigen Lot und der siebartigen Vorrichtung werden beim Durchströmen des Lotes mittels eines Unterstempels nicht alle Löcher gleichmäßig gefüllt. Durch die geringe Masse der Lotkugeln haften diese nach dem Abheben von der siebartigen Oberfläche teilweise am Oberstempel.The disadvantage of these proposed solutions is that due to material tensions and geometric inaccuracies of the Sieve bends occur that are not reliably reproducible, homogeneous Large areas ensure electronic components. Due to the high surface tension of the liquid Lots and as a result of the cohesive forces between the liquid solder and the sieve-like device when flowing through the Solder not filled all holes evenly with a lower stamp. By The small mass of the solder balls stick to them after they have been lifted off the sieve-like surface partly at the upper stamp.
Die
Aufgabe der Erfindung ist es, diese Mängel zu beseitigen und ein Verfahren und eine Vorrichtung zu entwickeln, mit denen eine reproduzierbare Belotung von Flächen zur zuverlässigen Verbindung von Bauelementen mit Trägersubstraten gewährleistet wird.The object of the invention is this Defects too eliminate and develop a method and a device with which a reproducible soldering of surfaces for a reliable connection of components with carrier substrates is guaranteed.
Die Aufgabe wird durch die Merkmale der Ansprüche 1 und 5 gelöst.The task is characterized by the characteristics of claims 1 and 5 solved.
Das in einem Lotgefäß auf die notwendige Temperatur erwärmte Lot wird mittels z.B. eines Stellmotors und eines Stempels in sehr genauen und reproduzierbaren Schritten auf die definierte Arbeitshöhe gebracht und dabei durch eine Bohrung mit definierten Abmessungen eines z.B. als Lochblende ausgebildeten Gefäßdeckels gedrückt. Durch die Bohrung der Lochblende wird das Lot gegen die Schwerkraft, herausgedrückt und zu einem in seiner Größe definierten balligen Lotkörper geformt, dessen Abmessungen von der Bohrungsgröße, der Viskosität des Lots, der Oberflächenspannung und den Umgebungsbedingungen abhängt. Auf diesen balligen Lotkörper wird das zu belotende Bauelement mit der benetzbaren Rückseite gesetzt. Das kugelförmige Lot verteilt sich auf dem Bauelement zu einer bogenförmig gekrümmten Fläche. Anschließend wird der Lotspiegel im Gefäß mit einer definierten Geschwindigkeit in eine definierte Lage abgesenkt. Das überschüssige, an den Seiten herausgedrückte Lot wird beispielsweise durch Absaugen durch die Blende oder durch andere geeignete Maßnahmen entfernt. Dieser Prozeß ist zuverlässig reproduzierbar, leicht an die zu belotende Flächengröße anpaßbar und in einer Schutzgaskammer in allen Schritten durchführbar. Es werden keine zeitaufwendigen Abläufe und keine raumaufwendigen Tunnelöfen (Durchlauföfen) benötigt. Der Prozeß ist effektiv und zuverlässig automatisierbar und gewährleistet gleichbleibend hohe Produktqualität, d.h. eine homogene Verbindung zwischen Bauelement und Trägersubstrat. Die Lotschicht ist frei von Verunreinigungen und entspricht genau der gewünschten Ausdehnung und Dicke.The solder heated to the necessary temperature in a soldering vessel is brought to the defined working height in very precise and reproducible steps by means of, for example, a servomotor and a stamp, and is pressed through a bore with defined dimensions, for example, as a perforated cover. By drilling the perforated diaphragm, the solder is pressed out against gravity and shaped into a spherical solder body of defined size, the dimensions of which depend on the hole size, the viscosity of the solder, the surface tension and the ambient conditions. The component to be soldered with the wettable back is placed on this spherical solder body. The spherical solder is distributed on the component to form an arcuately curved surface. The solder level in the vessel is then lowered into a defined position at a defined speed. The excess solder that is pressed out on the sides is removed, for example, by suction through the screen or by other suitable measures. This process is reliably reproducible, easily adaptable to the area size to be soldered and can be carried out in all steps in a protective gas chamber. No time-consuming processes and no space-consuming tunnel furnaces (continuous furnaces) are required. The process can be automated effectively and reliably and ensures consistently high product quality, ie a homogeneous connection between component and carrier substrate. The solder layer is free of impurities and corresponds exactly to the desired expansion and thickness.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous configurations the invention emerge from the subclaims.
Die Erfindung ist nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles einer erfindungsgemäßen Vorrichtung zum Beloten von Flächen näher erläutert. Es zeigen:The invention is based on an embodiment of an apparatus according to the invention shown in the drawings for soldering surfaces explained in more detail. It demonstrate:
Nach der Darstellung in der
In der
In der
Anschließend kann das so belotete Bauelement
Das Anheben und Absenken des Lotspiegels
Die Loterwärmung erfolgt entweder direkt oder
indirekt über
die Heizung
Das Füllen des Behälters
- 11
- Vorratsbehälterreservoir
- 22
- Blendecover
- 33
- Heizungheater
- 44
- Stempelstamp
- 55
- Lotsolder
- 66
- Lotkugelsolder ball
- 77
- Bauelementmodule
- 88th
- LotspiegelLotspiegel
- 99
- Lotsolder
- 1010
- Antriebsseitedriving side
- xx
- Abstanddistance
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19601055A DE19601055B4 (en) | 1996-01-02 | 1996-01-02 | Method and device for soldering surfaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19601055A DE19601055B4 (en) | 1996-01-02 | 1996-01-02 | Method and device for soldering surfaces |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19601055A1 DE19601055A1 (en) | 1997-07-03 |
DE19601055B4 true DE19601055B4 (en) | 2004-09-09 |
Family
ID=7782682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19601055A Expired - Fee Related DE19601055B4 (en) | 1996-01-02 | 1996-01-02 | Method and device for soldering surfaces |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19601055B4 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6418568A (en) * | 1987-07-13 | 1989-01-23 | Sanyo Electric Co | Device and method for automatic soldering |
JPH03138942A (en) * | 1989-10-25 | 1991-06-13 | Hitachi Ltd | Method and apparatus for manufacturing semiconductor integrated circuit device |
US5229016A (en) * | 1991-08-08 | 1993-07-20 | Microfab Technologies, Inc. | Method and apparatus for dispensing spherical-shaped quantities of liquid solder |
US5301862A (en) * | 1991-10-07 | 1994-04-12 | Fuji Seiki Machine Works, Ltd. | Solder coating apparatus |
DE4322391A1 (en) * | 1993-06-30 | 1995-01-12 | Volker Hoehns | Bonding device |
-
1996
- 1996-01-02 DE DE19601055A patent/DE19601055B4/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6418568A (en) * | 1987-07-13 | 1989-01-23 | Sanyo Electric Co | Device and method for automatic soldering |
JPH03138942A (en) * | 1989-10-25 | 1991-06-13 | Hitachi Ltd | Method and apparatus for manufacturing semiconductor integrated circuit device |
US5229016A (en) * | 1991-08-08 | 1993-07-20 | Microfab Technologies, Inc. | Method and apparatus for dispensing spherical-shaped quantities of liquid solder |
US5301862A (en) * | 1991-10-07 | 1994-04-12 | Fuji Seiki Machine Works, Ltd. | Solder coating apparatus |
DE4322391A1 (en) * | 1993-06-30 | 1995-01-12 | Volker Hoehns | Bonding device |
Non-Patent Citations (1)
Title |
---|
Multichip-Montage mit neuem Belotungsverfahren, in: EPP, September 1994, S. 49-50 * |
Also Published As
Publication number | Publication date |
---|---|
DE19601055A1 (en) | 1997-07-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8122 | Nonbinding interest in granting licences declared | ||
8139 | Disposal/non-payment of the annual fee | ||
8170 | Reinstatement of the former position | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |