WO1997008750A1 - Kühlkörper für elektronische bauelemente - Google Patents
Kühlkörper für elektronische bauelemente Download PDFInfo
- Publication number
- WO1997008750A1 WO1997008750A1 PCT/DE1996/001469 DE9601469W WO9708750A1 WO 1997008750 A1 WO1997008750 A1 WO 1997008750A1 DE 9601469 W DE9601469 W DE 9601469W WO 9708750 A1 WO9708750 A1 WO 9708750A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat sink
- component
- heat
- meandering
- distributor
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims description 9
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 4
- 239000010951 brass Substances 0.000 claims abstract description 4
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000002372 labelling Methods 0.000 description 2
- 210000001331 nose Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4093—Snap-on arrangements, e.g. clips
-
- 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
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the invention relates to a heat sink for electronic components, in particular a heat sink which can be mounted and coupled on the top of a component and which absorbs the heat loss of the component and emits it via cooling surfaces.
- a heat sink is usually in contact with a heat distributor (heat slug) of the component.
- the invention is based on the object of providing a cost-effective, self-centering, well-fixed, yet flexible cooling body with high heat dissipation capacity. This object is achieved by the features of claim 1.
- the invention is based on the knowledge that the optimal position of contact surfaces of the heat sink on the heat distributor of an electronic component can be obtained after the action of forces by means of a resilient structure of a heat sink bent from a sheet metal strip
- the heat sink is under tension.
- shoulders and rags in the area of the contact surfaces of the heat sink ensure effective centering or positioning relative to the component.
- the heat sink is elastic and can avoid certain mechanical stresses, but returns to its original position, so that the reliable heat dissipation time is saved.
- the area requirement of a heat sink in plan view is only slightly larger than the area of the component to be cooled.
- the heat sink can be of any height to adapt the heat dissipation output.
- the heat sink is produced from a sheet metal strip by means of a stamped and bent part and is bent in a meandering manner, offers the possibility of placing corresponding contact surfaces on the component in a precise position, generating a prestress acting through corresponding bends, so that a snap connection Heatsink with its cooling surfaces on the component and that the shoulders and tabs used for centering are integrally formed on the strip, ie punched and bent in a corresponding manner.
- FIG. 1 shows the principle of heat sink assembly.
- the heat sink according to FIG. 1 is in the idle state
- the one according to FIG. 2 is in the mounted but not fully assembled state
- FIG. 4 shows a detailed illustration of the snap-in connection provided between the cooling body and the component on both sides of the component.
- FIG. 5 shows the view of the heat sink from below, with concealed parts, such as contact surfaces or noses, also being taken into account.
- the electronic component 9 has a so-called heat slug. This can be present on the top of the component 9 over the entire surface or partially or also in edge regions, ie on the side surfaces of the component 9 or be contacted to the outside.
- the heat sink 1 is made in one piece with all the elements visible in FIGS. 1 to 3. For this purpose, the contours of shoulders 6, tabs 7 and lugs 10 are punched out in a sheet metal strip made of brass. When bending, the heat sink 1 receives the meandering shape shown.
- the shoulders 6 and tabs 7 are bent in accordance with the upper outline of the heat distributor 8 in such a way that they serve for centering or positioning relative to the heat distributor 8.
- the shoulders 6 are bent outwards at their ends in a funnel shape.
- the tabs 7 delimit the lateral position of the heat sink 1 on the component 9.
- the distance between the tabs 7 is greater than the corresponding width of the component 9.
- the heat sink 1 is not yet placed on the component 9.
- the lower meandering arches 11 contain the contact surfaces 2 which are to be seated on the heat distributor 8.
- the meander shape is represented by bends that are in the range of 90 °.
- the outer of the upper meandering arches are - as shown in Figure 1 - designed to ensure the introduction of the joining forces F in a simple manner during assembly.
- the tension remaining in the heat sink 1 after the snap connection between the heat sink 1 and the component 9 has been brought about causes a secure hold and a pressing of the contact surfaces 2 onto the heat distributor 8.
- the heat sink 1 can be placed on the component or on the heat distributor 8 by means of the joining forces F which act vertically from above.
- the contact surfaces 2 are partially or completely placed on the top of the component.
- the heat sink 1 is centered or positioned relative to the component 9 by the shoulders 6.
- the two outer legs of the heat sink 1 are pressed outwards by the lugs 10 which are guided inwards and upwards. In the same condition
- FIG. 3 shows a system with a heat sink 1 completely mounted on a component 9.
- the contact surfaces 2 sit completely on the top of the component 9.
- the shoulders 6 lie against the edge of the upper part of the component 9.
- the heat sink 1 is locked. However, he remains under tension. The contact surfaces are thus reliably pressed onto the heat distributor 8.
- FIG. 4 shows how a nose 10 engages, for example, in a cutout in the electronic component 9.
- Figure 5 shows a bottom view of the heat sink.
- the outwardly curved ends of the shoulders 6 are visible just like the tabs 7.
- the contours of the contact areas 2 appear as rectangles.
- the longitudinal direction 5 of the heat sink 1 is indicated by a double arrow.
- the width of the brass sheet strip results approximately from the width of the component 9, the distance between the component and the tab 7, and twice the width of the tab 7.
- the heat sink 1 Due to the constructive design in a meandering shape, the heat sink 1 has the necessary longitudinal elasticity. This is necessary in order to mount it on the component 9. The Shoulders 6 of the heat sink center it on the component 9 at all times. In addition, this centering positions the contact surfaces relative to the contact surfaces of the heat distributor 8. This applies both to the assembly and to re-centering after the action of external forces on the heat sink in the assembled state.
- the inner edges 3 of the contact surfaces 2 initially sit alone. In this state, the outer edges 4 of the contact surfaces 2 are slightly spaced from the heat distributor 8.
- the outer edges 4 of the contact surfaces 2 of the heat sink 1 are also drawn onto the heat distributor 8. This creates a reliable contact for heat dissipation.
- heat sink can be offered for assembly in various ways, for example. This can be done, for example, in rod magazines or in coils, with the heat sink having to be punched out immediately before assembly.
- Another advantage is that the date code of the power SMD IC can still be viewed or read when the heat sink 1 is on the component 9. This is possible due to the meandering design of the heat sink 1.
- the labeling of the component and the design of the heat sink are matched to one another in such a way that the labeling comes to rest between two lower meandering arches 11.
- heat sink according to the invention can be automatically assembled and disassembled.
- the heat sink can also be assembled and disassembled by hand, ie without tools, because the joining forces are relatively low.
- the elasticity of the heat sink 1 is also retained if it undergoes heat treatment processes in the assembled state. Neither component 9 nor its electrical connection elements 13 are damaged by the relatively low joining forces F.
- the heat sink can also absorb or intercept mechanical effects in directions which run transversely to the longitudinal direction 5 due to the laterally formed tabs 7.
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59611144T DE59611144D1 (de) | 1995-08-28 | 1996-08-06 | Kühlkörper für elektronische bauelemente |
US09/029,173 US5893409A (en) | 1995-08-28 | 1996-08-06 | Cooling element for electronic components |
BR9610014A BR9610014A (pt) | 1995-08-28 | 1996-08-06 | Dissipador de calor |
EP96934338A EP0847595B1 (de) | 1995-08-28 | 1996-08-06 | Kühlkörper für elektronische bauelemente |
AT96934338T ATE282249T1 (de) | 1995-08-28 | 1996-08-06 | Kühlkörper für elektronische bauelemente |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19531628A DE19531628C2 (de) | 1995-08-28 | 1995-08-28 | Kühlkörper |
DE19531628.2 | 1995-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997008750A1 true WO1997008750A1 (de) | 1997-03-06 |
Family
ID=7770592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1996/001469 WO1997008750A1 (de) | 1995-08-28 | 1996-08-06 | Kühlkörper für elektronische bauelemente |
Country Status (12)
Country | Link |
---|---|
US (1) | US5893409A (de) |
EP (1) | EP0847595B1 (de) |
CN (1) | CN1114944C (de) |
AR (1) | AR003338A1 (de) |
AT (1) | ATE282249T1 (de) |
BR (1) | BR9610014A (de) |
DE (2) | DE19531628C2 (de) |
ES (1) | ES2227608T3 (de) |
IN (1) | IN188906B (de) |
PT (1) | PT847595E (de) |
RU (1) | RU2152667C1 (de) |
WO (1) | WO1997008750A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6269863B1 (en) * | 1998-10-09 | 2001-08-07 | Molex Incorporated | Integrated processor mounting mechanism and heat sink |
US6093961A (en) * | 1999-02-24 | 2000-07-25 | Chip Coolers, Inc. | Heat sink assembly manufactured of thermally conductive polymer material with insert molded metal attachment |
US6191478B1 (en) * | 1999-06-07 | 2001-02-20 | Agilent Technologies Inc. | Demountable heat spreader and high reliability flip chip package assembly |
US6304449B1 (en) * | 1999-07-06 | 2001-10-16 | Chaojiong Zhang | Heat sink mounting for power semiconductors |
US6208517B1 (en) | 1999-09-10 | 2001-03-27 | Legerity, Inc. | Heat sink |
TW547699U (en) * | 2000-06-14 | 2003-08-11 | Foxconn Prec Components Co Ltd | Heat sink device |
US20020041481A1 (en) * | 2000-09-28 | 2002-04-11 | Yoshinori Kano | Linear motor and electronic component feeding apparatus |
US6445583B1 (en) | 2001-01-26 | 2002-09-03 | Laird Technologies, Inc. | Snap in heat sink shielding lid |
EP1341230A1 (de) * | 2002-02-27 | 2003-09-03 | Spark Electronic S.R.L. | Wärmesenke für integrierte Schaltkreise |
US6639803B1 (en) | 2002-07-11 | 2003-10-28 | International Business Machines Corporation | Compliant heat sink device/mounting system interconnect and a method of implementing same |
DE102005001748B4 (de) * | 2005-01-14 | 2019-01-24 | Marquardt Gmbh | Elektrischer Schalter und Elektrohandwerkzeug mit einem solchen Schalter |
DE102005002812B4 (de) * | 2005-01-20 | 2013-07-18 | Infineon Technologies Ag | Kühlkörper für oberflächenmontierte Halbleiterbauteile und Montageverfahren |
DE102005012216B4 (de) * | 2005-03-15 | 2008-11-13 | Infineon Technologies Ag | Oberflächenmontiertes Halbleiterbauteil mit Kühlkörper und Montageverfahren |
DE102005040856B4 (de) * | 2005-08-29 | 2012-03-29 | Siemens Ag | Drehkolbenstrahler |
US20080080160A1 (en) * | 2005-12-16 | 2008-04-03 | Laird Technologies, Inc. | Emi shielding assemblies |
US7262369B1 (en) | 2006-03-09 | 2007-08-28 | Laird Technologies, Inc. | Combined board level EMI shielding and thermal management |
US7317618B2 (en) * | 2006-03-09 | 2008-01-08 | Laird Technologies, Inc. | Combined board level shielding and thermal management |
US7463496B2 (en) * | 2006-03-09 | 2008-12-09 | Laird Technologies, Inc. | Low-profile board level EMI shielding and thermal management apparatus and spring clips for use therewith |
US7623360B2 (en) * | 2006-03-09 | 2009-11-24 | Laird Technologies, Inc. | EMI shielding and thermal management assemblies including frames and covers with multi-position latching |
US20080310119A1 (en) * | 2007-06-13 | 2008-12-18 | Tellabs Bedford, Inc. | Clip on heat sink |
DE102007054856A1 (de) * | 2007-11-16 | 2009-05-20 | Osram Gesellschaft mit beschränkter Haftung | Beleuchtungsvorrichtung mit einer Substratplatte und einem Kühlkörper |
US8477499B2 (en) | 2009-06-05 | 2013-07-02 | Laird Technologies, Inc. | Assemblies and methods for dissipating heat from handheld electronic devices |
US7965514B2 (en) | 2009-06-05 | 2011-06-21 | Laird Technologies, Inc. | Assemblies and methods for dissipating heat from handheld electronic devices |
US20110216506A1 (en) * | 2010-03-02 | 2011-09-08 | Malico Inc. | Heat sink buckle |
DE102012112393B4 (de) * | 2012-12-17 | 2018-05-03 | Phoenix Contact Gmbh & Co. Kg | Elektrische Baugruppe |
CN105790787B (zh) * | 2016-02-25 | 2018-03-02 | 广东欧珀移动通信有限公司 | 阻抗匹配电路的设计方法及移动终端 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4605058A (en) * | 1985-04-01 | 1986-08-12 | The Staver Company, Inc. | Heat dissipating retainer for electronic package |
WO1991005369A1 (en) * | 1989-09-28 | 1991-04-18 | Redpoint Limited | Heatsink for semiconductor devices |
DE4335299A1 (de) * | 1993-10-15 | 1995-04-20 | Siemens Ag | Kühlkörper mit integrierter Befestigung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1922618U (de) * | 1965-06-12 | 1965-09-02 | Daut & Co K G | Vorrichtung zum kuehlen von transistoren. |
US3670215A (en) * | 1970-09-28 | 1972-06-13 | Staver Co Inc The | Heat dissipator for integrated circuit |
DE2216162A1 (de) * | 1972-04-04 | 1973-10-11 | Staver Co | Kuehlkoerper fuer eine halbleitereinrichtung |
DE3203609C2 (de) * | 1982-02-03 | 1985-02-14 | Siemens AG, 1000 Berlin und 8000 München | Kühlelement für integrierte Bauelemente |
US4945401A (en) * | 1987-07-20 | 1990-07-31 | The Staver Company Inc. | Heat dissipator for semiconductor unit |
JPH0410558A (ja) * | 1990-04-27 | 1992-01-14 | Hitachi Ltd | 放熱体付き半導体装置 |
-
1995
- 1995-08-28 DE DE19531628A patent/DE19531628C2/de not_active Expired - Fee Related
-
1996
- 1996-08-06 WO PCT/DE1996/001469 patent/WO1997008750A1/de active IP Right Grant
- 1996-08-06 CN CN96196649A patent/CN1114944C/zh not_active Expired - Fee Related
- 1996-08-06 ES ES96934338T patent/ES2227608T3/es not_active Expired - Lifetime
- 1996-08-06 AT AT96934338T patent/ATE282249T1/de active
- 1996-08-06 RU RU98105616/28A patent/RU2152667C1/ru not_active IP Right Cessation
- 1996-08-06 DE DE59611144T patent/DE59611144D1/de not_active Expired - Lifetime
- 1996-08-06 EP EP96934338A patent/EP0847595B1/de not_active Expired - Lifetime
- 1996-08-06 PT PT96934338T patent/PT847595E/pt unknown
- 1996-08-06 US US09/029,173 patent/US5893409A/en not_active Expired - Lifetime
- 1996-08-06 BR BR9610014A patent/BR9610014A/pt not_active IP Right Cessation
- 1996-08-12 IN IN1440CA1996 patent/IN188906B/en unknown
- 1996-08-23 AR ARP960104087A patent/AR003338A1/es active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4605058A (en) * | 1985-04-01 | 1986-08-12 | The Staver Company, Inc. | Heat dissipating retainer for electronic package |
WO1991005369A1 (en) * | 1989-09-28 | 1991-04-18 | Redpoint Limited | Heatsink for semiconductor devices |
DE4335299A1 (de) * | 1993-10-15 | 1995-04-20 | Siemens Ag | Kühlkörper mit integrierter Befestigung |
Non-Patent Citations (1)
Title |
---|
F. E. ANDROS ET AL.: "one-piece snap-on heat sink", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 22, no. 1, June 1979 (1979-06-01), NEW YORK, pages 71 - 72, XP002022049 * |
Also Published As
Publication number | Publication date |
---|---|
BR9610014A (pt) | 1999-07-06 |
ES2227608T3 (es) | 2005-04-01 |
US5893409A (en) | 1999-04-13 |
CN1114944C (zh) | 2003-07-16 |
CN1194724A (zh) | 1998-09-30 |
EP0847595A1 (de) | 1998-06-17 |
DE19531628A1 (de) | 1997-03-06 |
RU2152667C1 (ru) | 2000-07-10 |
EP0847595B1 (de) | 2004-11-10 |
IN188906B (de) | 2002-11-16 |
DE19531628C2 (de) | 1999-08-12 |
AR003338A1 (es) | 1998-07-08 |
DE59611144D1 (de) | 2004-12-16 |
ATE282249T1 (de) | 2004-11-15 |
PT847595E (pt) | 2005-02-28 |
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