EP0882143B1 - Connector pins for electronic equipment - Google Patents

Connector pins for electronic equipment Download PDF

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Publication number
EP0882143B1
EP0882143B1 EP97903273A EP97903273A EP0882143B1 EP 0882143 B1 EP0882143 B1 EP 0882143B1 EP 97903273 A EP97903273 A EP 97903273A EP 97903273 A EP97903273 A EP 97903273A EP 0882143 B1 EP0882143 B1 EP 0882143B1
Authority
EP
European Patent Office
Prior art keywords
weight
connector
pct
pin
connector pins
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 - Lifetime
Application number
EP97903273A
Other languages
German (de)
French (fr)
Other versions
EP0882143A1 (en
Inventor
Bernhard Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berkenhoff and Co KG
Original Assignee
Berkenhoff and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Berkenhoff and Co KG filed Critical Berkenhoff and Co KG
Publication of EP0882143A1 publication Critical patent/EP0882143A1/en
Application granted granted Critical
Publication of EP0882143B1 publication Critical patent/EP0882143B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026—Alloys based on copper
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component

Definitions

  • the invention relates to The requirements on connector pins for electronic assemblies are very high, because this has good electrical conductivity and therefore must have good thermal conductivity and on the other hand high strength so that one not bent when inserted and the other one show little wear.
  • these connector pins also be flexible and suitable for a coating suitable. High strength is still required if you want the dimensions, especially the Cross-sections that reduce contact elements.
  • Standard alloys are currently used for such plug pins, such as B. brass or bronze used however a comparatively low electrical conductivity exhibit. Materials with higher electrical conductivity with higher strength at the same time.
  • the invention has for its object plug pins of the type mentioned in such a way that these in addition to a high electrical conductivity and a comparative one high strength easy to manufacture, process, are easily bendable and no disadvantageous waste Experienced.
  • a plug pin according to the invention is characterized by a high conductivity, which is only slightly lower compared to pure copper. With this connector pin made of CuAg alloys, a conductivity of over 40 Siemens can be achieved. The tensile strength as such is comparable to that of the CuFe2P alloy, with strength values above 600 N / mm 2 being obtained here. Furthermore, the connector pins according to the invention are distinguished by a slight increase in temperature when the current is loaded. The corrosion resistance is further increased compared to copper by the addition of silver.
  • the plug pins are comparative easy to apply a coating, for example with a rhodium, palladium, silver, indium, iridium, Platinum, gold, tin, nickel, copper or lead coating.
  • a coating with the aforementioned metals or their alloys provide a good one Solderability and secondly a low contact resistance, d. H. good contact ability.
  • Advantageous can thus be the one end of contact with a good solderable Coating and the other end with a highly conductive Coating. Because of the higher The connector pins can provide strength and conductivity smaller cross sections are formed so that the Connector number density can be increased. It is advantageous between the core alloy and the outer coating Barrier layer made of nickel or copper provided the phase boundary reactions between the core material and the outer Coating prevented.
  • the core alloy should contain iron and manganese 0.8% by weight and the content of silicon and aluminum 0.3 Do not exceed% by weight. Boron, calcium, phosphorus and magnesium again should not exceed 0.1% by weight. Zinc can advantageously up to 2% by weight can be added. Furthermore zirconium, titanium and chrome can be added to the core alloy are, these in amounts of not more than 0.2% by weight can be added.
  • the alloying elements iron and Manganese increases strength while the other alloying elements both as a deoxidizer as well strengthening due to excretions. Chromium and zircon have proven to be particularly advantageous.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Contacts (AREA)
  • Conductive Materials (AREA)
  • Multi-Conductor Connections (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Non-Insulated Conductors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

PCT No. PCT/EP97/00673 Sec. 371 Date Aug. 12, 1998 Sec. 102(e) Date Aug. 12, 1998 PCT Filed Feb. 13, 1997 PCT Pub. No. WO97/31129 PCT Pub. Date Aug. 28, 1997The pin for electronic assemblies according to the present invention consists of a core alloy with 0.2 to 1.5 wt. % Ag, the remainder copper, whereby at least the contact surface of the pin is provided with one or several highly conductive and/or easily solderable coatings. With this not only a higher electric conductivity of the contact is obtained but also a comparatively high strength with simple production and good workability, which makes it possible to miniaturize the pins.

Description

Die Erfindung betrifft gemäß dem Oberbegriff des Anspruchs 1. Die Anforderungen an Steckerstifte für elektronische Baugruppen sind sehr hoch, da diese zum einen eine gute elektrische Leitfähigkeit und damit eine gute Wärmeleitfähigkeit aufweisen müssen und zum anderen eine hohe Festigkeit, damit diese zum einen beim Einschieben nicht verbogen und zum anderen einen geringen Verschleiß aufweisen. Daneben müssen diese Steckerstifte auch gut biegbar sein und sich für eine Beschichtung eignen. Eine hohe Festigkeit ist weiterhin erforderlich, will man die Abmessungen, insbesondere die Querschnitte, der Kontaktelemente verringern.According to the preamble of claim 1, the invention relates to The requirements on connector pins for electronic assemblies are very high, because this has good electrical conductivity and therefore must have good thermal conductivity and on the other hand high strength so that one not bent when inserted and the other one show little wear. In addition, these connector pins also be flexible and suitable for a coating suitable. High strength is still required if you want the dimensions, especially the Cross-sections that reduce contact elements.

Für derartige Steckerstift werden zur Zeit Standardlegierungen, wie z. B. Messing oder Bronzen eingesetzt, die jedoch eine vergleichsweise geringe elektrische Leitfähigkeit aufweisen. Werkstoffe mit höherer elektrischer Leitfähigkeit bei gleichzeitig höherer Festigkeit sind z. B. CuFe2P-Legierungen wie sie in der DIN 17 666 genannt werden. Diese Legierungen zeigen jedoch den Nachteil, daß sie aufgrund ihres hohen Eisenanteiles zur Ausscheidungen von Eisen mit den entsprechenden Korrosionsproblemen neigen. Insbesondere wenn diese Steckerstifte für sicherheitsrelevante Teile eingesetzt werden, kann auf die Dauer nicht gewährleistet werden, daß ständig ein ausreichend sicherer Kontaktübergang gegeben ist.Standard alloys are currently used for such plug pins, such as B. brass or bronze used however a comparatively low electrical conductivity exhibit. Materials with higher electrical conductivity with higher strength at the same time. B. CuFe2P alloys as they are called in DIN 17 666. However, these alloys show that Disadvantage that due to their high iron content Excretions of iron with the corresponding corrosion problems tend. Especially when these connector pins for Safety-relevant parts can be used on the Duration cannot be guaranteed to be sufficient at all times there is a secure contact transition.

Der Erfindung liegt die Aufgabe zugrunde, Steckerstifte der eingangs genannten Art so auszubilden, daß diese neben einer hohen elektrischen Leitfähigkeit und einer vergleichsweise hohen Festigkeit einfach herzustellen, zu verarbeiten, gut biegbar sind und keine nachteiligen Ausscheidungen erfahren.The invention has for its object plug pins of the type mentioned in such a way that these in addition to a high electrical conductivity and a comparative one high strength easy to manufacture, process, are easily bendable and no disadvantageous waste Experienced.

Diese Aufgabe wird erfindungsgemäß durch einen Steckerstift mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a Plug pin with the features of claim 1 solved.

Ein erfindungsgemäße Steckerstift zeichnet sich durch eine hohe Leitfähigkeit aus, die verglichen mit rein Kupfer nur geringfügig geringer ist. Mit diesem Steckerstift aus CuAg-Legierungen läßt sich eine Leitfähigkeit von über 40 Siemens erreichen. Die Zugfestigkeit als solche ist vergleichbar mit der der CuFe2P-Legierung, wobei hier Festigkeitswerte über 600 N/mm2 erhalten werden. Des weiteren zeichnen sich die erfindungsgemäßen Steckerstift durch eine geringe Temperaturerhöhung bei Strombelastung aus. Die Korrosionsbeständigkeit wird im Vergleich zu Kupfer durch den Silberzusatz weiter erhöht. A plug pin according to the invention is characterized by a high conductivity, which is only slightly lower compared to pure copper. With this connector pin made of CuAg alloys, a conductivity of over 40 Siemens can be achieved. The tensile strength as such is comparable to that of the CuFe2P alloy, with strength values above 600 N / mm 2 being obtained here. Furthermore, the connector pins according to the invention are distinguished by a slight increase in temperature when the current is loaded. The corrosion resistance is further increased compared to copper by the addition of silver.

Die Steckerstift sind erfindungsgemäß vergleichsweise einfach mit einer Beschichtung zu versehen, beispielsweise mit einer Rhodium-, Palladium-, Silber-, Indium-, Iridium-, Platin-, Gold-, Zinn, Nickel, Kupfer- oder Blei-Beschichtung. Eine Beschichtung mit den vorstehend genannten Metallen oder deren Legierungen erbringt zum einen eine gute Lötfähigkeit und zum anderen einen geringen Übergangswiderstand, d. h. eine gute Kontaktfähigkeit. Vorteilhaft kann somit das eine Ende des Kontaktes mit einer gut lötfähigen Beschichtung und das andere Ende mit einer gut leitfähigen Beschichtung versehen werden. Aufgrund der höheren Festigkeit und Leitfähigkeit können die Steckerstifte mit geringeren Querschnitten ausgebildet werden, so daß die Steckerzahldichte erhöht werden kann. Vorteilhaft wird zwischen der Kernlegierung und der äußeren Beschichtung eine Sperrschicht aus Nickel oder Kupfer vorgesehen, die Phasengrenzreaktionen zwischen dem Kernmaterial und der äußeren Beschichtung verhindert.According to the invention, the plug pins are comparative easy to apply a coating, for example with a rhodium, palladium, silver, indium, iridium, Platinum, gold, tin, nickel, copper or lead coating. A coating with the aforementioned metals or their alloys provide a good one Solderability and secondly a low contact resistance, d. H. good contact ability. Advantageous can thus be the one end of contact with a good solderable Coating and the other end with a highly conductive Coating. Because of the higher The connector pins can provide strength and conductivity smaller cross sections are formed so that the Connector number density can be increased. It is advantageous between the core alloy and the outer coating Barrier layer made of nickel or copper provided the phase boundary reactions between the core material and the outer Coating prevented.

Der Gehalt der Kernlegierung an Eisen und Mangan sollte jeweils 0,8 Gew% und der Gehalt an Silizium und Aluminium 0,3 Gew% nicht übersteigen. Bor, Kalzium, Phosphor und Magnesium sollten wiederum 0,1 Gew% nicht übersteigen. Zink kann vorteilhaft bis zu 2 Gew% zugesetzt werden. Des weiteren kann der Kernlegierung Zirkon, Titan und Chrom zugesetzt werden, wobei diese in Mengen von jeweils nicht mehr als 0,2 Gew% zugegeben werden. Die Legierungselemente Eisen und Mangan sind festigkeitssteigernd, während die anderen Legierungselemente sowohl als Desoxidationsmittel wie auch aufgrund von Ausscheidungen festigkeitssteigernd wirken. Besonders vorteilhaft hat sich Chrom und Zirkon erwiesen.The core alloy should contain iron and manganese 0.8% by weight and the content of silicon and aluminum 0.3 Do not exceed% by weight. Boron, calcium, phosphorus and magnesium again should not exceed 0.1% by weight. Zinc can advantageously up to 2% by weight can be added. Furthermore zirconium, titanium and chrome can be added to the core alloy are, these in amounts of not more than 0.2% by weight can be added. The alloying elements iron and Manganese increases strength while the other alloying elements both as a deoxidizer as well strengthening due to excretions. Chromium and zircon have proven to be particularly advantageous.

Claims (3)

  1. Connector pins for connector-pin arrangements on electronic sub-assemblies having a plurality of connector pins, characterized in that the connector pin comprises a core alloy with from 0·2 to 1·5% by weight of Ag and optionally one or more elements of the group 0 to 2 % by weight of Zn, 0 to 0·8 % by weight of Fe, 0 to 0·8 % by weight of Mn, 0 to 0·3 % by weight of Si, 0 to 0·3 % by weight of Al 0 to 0·1 % by weight of P 0 to 0·2 % by weight ofTi, Cr, Zr in each case,
    the remainder copper and the usual impurities, and the contact surface of the connector pin is provided with one or more good conducting and/or easily solderable coatings which consist of one or more elements of the group Rh, Pd, Ag, In, Ir, Pt, Au, Sn, Cu, Ni and Pb.
  2. A connector pin according to Claim 1, characterized in that the connector pin has the following composition in % by weight: Ag 0·9 P 0·02 Mn 0·1 remainder copper.
  3. A connector pin according to Claim 1 or 2, characterized in that one end of the connector pin is provided with an easily solderable coating and the other end is provided with a good conducting coating which consist of one or more elements of the group Rh, Pd, Ag, In, Ir, Pt, Au, Sn, Cu, Ni and Pb.
EP97903273A 1996-02-20 1997-02-13 Connector pins for electronic equipment Expired - Lifetime EP0882143B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19606116 1996-02-20
DE19606116A DE19606116A1 (en) 1996-02-20 1996-02-20 Electrical contact elements
PCT/EP1997/000673 WO1997031129A1 (en) 1996-02-20 1997-02-13 Electric contacts

Publications (2)

Publication Number Publication Date
EP0882143A1 EP0882143A1 (en) 1998-12-09
EP0882143B1 true EP0882143B1 (en) 2004-06-16

Family

ID=7785803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97903273A Expired - Lifetime EP0882143B1 (en) 1996-02-20 1997-02-13 Connector pins for electronic equipment

Country Status (10)

Country Link
US (1) US5981090A (en)
EP (1) EP0882143B1 (en)
JP (1) JP2000504784A (en)
CN (1) CN1081676C (en)
AT (1) ATE269423T1 (en)
DE (2) DE19606116A1 (en)
ES (1) ES2223074T3 (en)
PT (1) PT882143E (en)
TW (1) TW329062B (en)
WO (1) WO1997031129A1 (en)

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DE10113492B4 (en) * 2001-03-19 2005-12-01 Eads Astrium Gmbh Electrically conductive wire for applications in low temperature ranges
JP3891346B2 (en) 2002-01-07 2007-03-14 千住金属工業株式会社 Fine copper ball and method for producing fine copper ball
US7391116B2 (en) * 2003-10-14 2008-06-24 Gbc Metals, Llc Fretting and whisker resistant coating system and method
JP4992028B2 (en) * 2006-05-31 2012-08-08 国立大学法人東京工業大学 Ir-based conductive coating material with excellent aging resistance
DE102007047007A1 (en) * 2007-10-01 2009-04-09 Tyco Electronics Amp Gmbh Electrical contact element and a method for producing the same
DE102010042526A1 (en) * 2010-10-15 2012-04-19 Continental Automotive Gmbh contact element
CN104112616B (en) * 2014-07-21 2016-04-27 南通万德科技有限公司 A kind of button of trembling of disappearing and preparation method thereof
WO2018101249A1 (en) 2016-12-01 2018-06-07 日本碍子株式会社 Electroconductive support member and method for manufacturing same
CN106584980A (en) * 2016-12-02 2017-04-26 常熟市隆通金属制品有限公司 Composite metal product used for wear-resistant parts
CN106584978A (en) * 2016-12-02 2017-04-26 常熟市隆通金属制品有限公司 Composite metal product for corrosion-resistant parts
CN106584979A (en) * 2016-12-02 2017-04-26 常熟市隆通金属制品有限公司 Corrosion-resistant composite metal product for metal tube
CN106584992A (en) * 2016-12-08 2017-04-26 常熟市隆通金属制品有限公司 Composite metal product for explosion-proof tool
CN106584983A (en) * 2016-12-30 2017-04-26 江苏七天环保科技有限公司 Composite metal product for electrolytic capacitor
CN106739274A (en) * 2016-12-30 2017-05-31 江苏七天环保科技有限公司 A kind of sliding bearing composite metal product
CN106626605A (en) * 2016-12-30 2017-05-10 江苏七天环保科技有限公司 Ultrahigh-temperature durable composite metal product
CN106671510A (en) * 2016-12-30 2017-05-17 江苏七天环保科技有限公司 Composite metal product for high-temperature load
CN106626603A (en) * 2016-12-30 2017-05-10 江苏七天环保科技有限公司 Composite metal product for precise component
CN106494031A (en) * 2016-12-30 2017-03-15 江苏七天环保科技有限公司 A kind of high temperature resistant composite metal product of resistance to thermogalvanic corrosion
CN106671507A (en) * 2016-12-30 2017-05-17 江苏七天环保科技有限公司 Durable high temperature-resisting high-strength composite metal product
CN106671508A (en) * 2016-12-30 2017-05-17 江苏七天环保科技有限公司 High-performance composite metal product for weak-current contacts
CN106626604A (en) * 2016-12-30 2017-05-10 江苏七天环保科技有限公司 High-hardness high-strength durable compound metal product
CN106696388A (en) * 2016-12-30 2017-05-24 江苏七天环保科技有限公司 Anti-corrosion high-temperature-resistant composite metal product
CN106739275A (en) * 2016-12-30 2017-05-31 江苏七天环保科技有限公司 A kind of high-speed and over-loading bearing composite metal product
CN108757791A (en) * 2018-06-22 2018-11-06 苏州斯洁科电子有限公司 A kind of high-performance electric contact spring leaf

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Also Published As

Publication number Publication date
DE19606116A1 (en) 1997-08-21
CN1081676C (en) 2002-03-27
ES2223074T3 (en) 2005-02-16
PT882143E (en) 2004-08-31
DE59711723D1 (en) 2004-07-22
US5981090A (en) 1999-11-09
EP0882143A1 (en) 1998-12-09
WO1997031129A1 (en) 1997-08-28
CN1212023A (en) 1999-03-24
ATE269423T1 (en) 2004-07-15
JP2000504784A (en) 2000-04-18
TW329062B (en) 1998-04-01

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