WO2005020322A1 - Einpressdiode mit versilbertem drahtanschluss - Google Patents
Einpressdiode mit versilbertem drahtanschluss Download PDFInfo
- Publication number
- WO2005020322A1 WO2005020322A1 PCT/DE2004/001285 DE2004001285W WO2005020322A1 WO 2005020322 A1 WO2005020322 A1 WO 2005020322A1 DE 2004001285 W DE2004001285 W DE 2004001285W WO 2005020322 A1 WO2005020322 A1 WO 2005020322A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diode
- press
- contact
- silver
- wire
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
- H01L23/043—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body
- H01L23/049—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body the other leads being perpendicular to the base
-
- 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
-
- 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
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/33—Structure, shape, material or disposition of the layer connectors after the connecting process of a plurality of layer connectors
-
- 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
- H01L2924/01033—Arsenic [As]
Definitions
- the invention relates to a press-in diode according to the preamble of patent claim 1 and a method for producing such a press-in diode according to the preamble of patent claim 5.
- Known rectifier diodes essentially comprise a base contact which forms a first connection of the press-in diode, a so-called wire contact which forms the second connection of the press-in diode, and the actual diode semiconductor chip which is soldered between the contacts.
- the base contact is used to press the diode into a recess in a carrier element.
- a circuit board can be soldered to the wire contact.
- the wire contact 2 comprises a widened wire head 5 for attaching the diode chip 7 and a narrower wire shaft 4 which is accessible from the outside. In a motor vehicle generator, for example, the wire shaft 4 is connected to a phase of the stator windings.
- Both the base contact 3 and the wire contact 2 are usually made of copper and coated with a nickel layer 6, which in particular acts as a corrosion barrier between copper and the material of the
- Carrier element usually aluminum
- the press-in diode 1 is also covered with a plastic jacket 9.
- the wire contact 2 can be attached to a circuit board either by soldering or welding. If the wire contact is to be soldered, the entire
- Tinning is usually done in one
- Embodiments of the invention are the subject of dependent claims.
- An essential aspect of the invention is to provide the wire contact of the press-in diode at least partially with a surface layer made of silver and to produce the base contact from a material or to provide it with a metal layer which causes as little corrosion as possible with the material of the carrier element.
- a silver coating has particularly good soldering properties and, moreover, a melting point which is above a temperature of approx. 300 ° C, which occurs during the manufacture of the press-in diode, e.g. occur when soldering the diode chip between the socket contact and the wire contact or when the sheath hardens. Silver is therefore preferable to other possible materials.
- the base contact is preferably not silver-plated and, for example, provided with a nickel layer.
- Nickel is far less noble than silver and is therefore less prone to corrosion with aluminum.
- the disadvantage of a different surface coating of the base contact and the wire contact is that the silvering of the press-in diode cannot be carried out using the inexpensive pouring method.
- the wire contacts are therefore preferably silver-plated individually (before assembly of the press-in diode). In this case, preferably not all of the wire contact, but only part of the wire contact is silver-plated. According to a preferred embodiment of the invention, a section of the wire contact used to attach the diode chip is not provided with the silver layer.
- FIG. 2 shows a press-in diode with a silver coating according to a first embodiment of the invention
- Fig. 4 shows a press-in diode with a partially silver-plated wire contact and a non-silver-plated base contact.
- the press-in diode 1 essentially comprises a base contact 3, a wire contact 2 and the actual diode semiconductor chip 7, which is soldered between the contacts 2, 3.
- the solder layer is designated by reference number 8.
- the base contact 3 comprises a widened section for pressing into a carrier element, e.g. an aluminum sheet. Pressing in creates permanent thermal and electrical contact at the same time.
- a carrier element e.g. an aluminum sheet. Pressing in creates permanent thermal and electrical contact at the same time.
- the wire contact 2 comprises a wire head 5, which is used for connection to the diode chip 7, and a wire shaft 4, on which the press-in diode 1 e.g. can be connected to a circuit board.
- Base contact 3 and wire contact 2 are made of copper, which is provided with a nickel layer 6. To protect the diode chip 7, a middle section of the press-in diode 1 is sheathed with plastic 9.
- the contact areas protruding from the casing 9 are provided with a silver layer 10.
- the nickel layer serves as a diffusion barrier between the copper and the
- the diodes can be electroplated, for example in a drum process, as bulk material.
- FIGS. 3 and 4 Another embodiment of the invention in which this problem does not exist is shown in FIGS. 3 and 4.
- Fig. 3 shows a wire contact 2 with a partial silver plating. The silver plating is located only on the wire shaft 4 of the wire contact 2, but not on the section 5 to which the diode chip 7 is attached.
- Such a partially silver-coated wire contact 2 can be produced, for example, by placing the wire contacts 2 individually in a frame (with the wire shafts 4 facing down) and immersing the wire shafts 4 in a galvanizing basin. The wire contact 2 is then joined together with the other components 3, 7 and coated with plastic 9.
- the base contact 3 is not silver-plated in this case and is e.g. made of copper, which is provided with a nickel layer 6. When using a carrier element made of aluminum, there is far less electrolytic corrosion between the nickel layer 6 and the aluminum than between silver 10 and aluminum.
- the result is a press-in diode with a very good solderable wire contact 2 and a base contact 3, which can be pressed into an aluminum carrier without any corrosion problem.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wire Bonding (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/566,811 US20080169566A1 (en) | 2003-08-08 | 2004-06-19 | Press-Fit Diode Having a Silver-Plated Wire Termination |
JP2006515686A JP2006527913A (ja) | 2003-08-18 | 2004-06-19 | 銀めっきされた線材端子を備えた圧入ダイオード |
EP04738735A EP1658637A1 (de) | 2003-08-18 | 2004-06-19 | Einpressdiode mit versilbertem drahtanschluss |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10338408 | 2003-08-18 | ||
DE10338408.1 | 2003-08-18 | ||
DE10346855A DE10346855A1 (de) | 2003-08-18 | 2003-10-09 | Einpressdiode mit versilbertem Drahtanschluss |
DE10346855.2 | 2003-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005020322A1 true WO2005020322A1 (de) | 2005-03-03 |
Family
ID=34219269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/001285 WO2005020322A1 (de) | 2003-08-08 | 2004-06-19 | Einpressdiode mit versilbertem drahtanschluss |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1658637A1 (de) |
JP (1) | JP2006527913A (de) |
WO (1) | WO2005020322A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1760783A2 (de) * | 2005-08-31 | 2007-03-07 | Hitachi, Ltd. | Halbleitervorrichtung und Kraftfahrzeug-Wechselstromgenerator |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3145099A (en) * | 1961-05-22 | 1964-08-18 | Waukesha Foundry Co | Non-galling bearing alloy of silver in nickel base |
DE2836334A1 (de) * | 1978-08-19 | 1980-03-06 | Demag Ag Mannesmann | Verfahren zum schuetzen von metallenen, kraftschluessig gepaarten, schwingend belasteten maschinenteilen vor reibkorrosion |
DE3236376A1 (de) * | 1982-10-01 | 1984-04-05 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Verfahren zum schuetzen von metallenen, kraftschluessig gepaarten maschinenteilen vor reibkorrosion |
DE4112286A1 (de) * | 1990-04-30 | 1991-10-31 | Motorola Inc | Verbesserter gleichrichter und verfahren zu seiner herstellung |
DE4341269A1 (de) * | 1993-12-03 | 1995-06-22 | Bosch Gmbh Robert | Gleichrichterdiode |
DE19549202A1 (de) * | 1995-12-30 | 1997-07-03 | Bosch Gmbh Robert | Gleichrichterdiode |
DE10146274A1 (de) * | 2001-09-19 | 2003-04-10 | Bosch Gmbh Robert | Metallische Oberfläche eines Körpers, Verfahren zur Herstellung einer strukturierten metallischen Oberfläche eines Körpers und dessen Verwendung |
-
2004
- 2004-06-19 WO PCT/DE2004/001285 patent/WO2005020322A1/de active Application Filing
- 2004-06-19 JP JP2006515686A patent/JP2006527913A/ja active Pending
- 2004-06-19 EP EP04738735A patent/EP1658637A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3145099A (en) * | 1961-05-22 | 1964-08-18 | Waukesha Foundry Co | Non-galling bearing alloy of silver in nickel base |
DE2836334A1 (de) * | 1978-08-19 | 1980-03-06 | Demag Ag Mannesmann | Verfahren zum schuetzen von metallenen, kraftschluessig gepaarten, schwingend belasteten maschinenteilen vor reibkorrosion |
DE3236376A1 (de) * | 1982-10-01 | 1984-04-05 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Verfahren zum schuetzen von metallenen, kraftschluessig gepaarten maschinenteilen vor reibkorrosion |
DE4112286A1 (de) * | 1990-04-30 | 1991-10-31 | Motorola Inc | Verbesserter gleichrichter und verfahren zu seiner herstellung |
DE4341269A1 (de) * | 1993-12-03 | 1995-06-22 | Bosch Gmbh Robert | Gleichrichterdiode |
DE19549202A1 (de) * | 1995-12-30 | 1997-07-03 | Bosch Gmbh Robert | Gleichrichterdiode |
DE10146274A1 (de) * | 2001-09-19 | 2003-04-10 | Bosch Gmbh Robert | Metallische Oberfläche eines Körpers, Verfahren zur Herstellung einer strukturierten metallischen Oberfläche eines Körpers und dessen Verwendung |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1760783A2 (de) * | 2005-08-31 | 2007-03-07 | Hitachi, Ltd. | Halbleitervorrichtung und Kraftfahrzeug-Wechselstromgenerator |
EP1760783A3 (de) * | 2005-08-31 | 2007-11-28 | Hitachi, Ltd. | Halbleitervorrichtung und Kraftfahrzeug-Wechselstromgenerator |
US7964492B2 (en) | 2005-08-31 | 2011-06-21 | Hitachi, Ltd. | Semiconductor device and automotive AC generator |
CN101783304B (zh) * | 2005-08-31 | 2013-03-13 | 株式会社日立制作所 | 半导体装置的制造方法 |
US8421232B2 (en) | 2005-08-31 | 2013-04-16 | Hitachi, Ltd. | Semiconductor device and automotive ac generator |
Also Published As
Publication number | Publication date |
---|---|
EP1658637A1 (de) | 2006-05-24 |
JP2006527913A (ja) | 2006-12-07 |
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