WO1999027554A1 - Halbleiterbauelement mit definiertem verhalten bei einem ausfall und verfahren zur herstellung eines solchen - Google Patents
Halbleiterbauelement mit definiertem verhalten bei einem ausfall und verfahren zur herstellung eines solchen Download PDFInfo
- Publication number
- WO1999027554A1 WO1999027554A1 PCT/DE1998/002910 DE9802910W WO9927554A1 WO 1999027554 A1 WO1999027554 A1 WO 1999027554A1 DE 9802910 W DE9802910 W DE 9802910W WO 9927554 A1 WO9927554 A1 WO 9927554A1
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- Prior art keywords
- semiconductor
- semiconductor substrate
- semiconductor component
- molding compound
- wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L23/495—Lead-frames or other flat leads
- H01L23/49541—Geometry of the lead-frame
- H01L23/49562—Geometry of the lead-frame for devices being provided for in H01L29/00
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- H—ELECTRICITY
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- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/0411—Miniature fuses
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- 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
- H01L23/495—Lead-frames or other flat leads
- H01L23/49517—Additional leads
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- H01L23/62—Protection against overvoltage, e.g. fuses, shunts
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
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- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
- H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
- H01H2085/0034—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices with molded casings
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- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
- H01H2085/0275—Structural association with a printed circuit board
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- H01L2924/0001—Technical content checked by a classifier
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Definitions
- the invention relates to a semiconductor component and in particular a semiconductor switch with defined behavior in the event of a failure, and to a method for producing such a semiconductor component.
- Switches are becoming increasingly widespread in automotive and industrial electronics.
- the so-called “smart” switches are characterized by extensive, integrated protective circuits against overvoltage, overcurrent and overtemperature, so that in many cases an additional protection of the circuit can be dispensed with.
- the aim of the present invention is therefore to create a semiconductor component with a defined fuse characteristic in the event of a failure and to specify a production method therefor.
- the solution to the problem according to the invention is to use the bond wire or wires between a contact area on the semiconductor substrate and the external connection or the connection pins of the component as a fuse, but to ensure a defined tripping characteristic by means of a targeted structural design.
- the wire guide is designed so that the bond wire occurs at one point on the surface of the molding compound, so that melting of the wire is possible and
- a semiconductor component according to the present invention which comprises a semiconductor substrate with one or more contact areas and one or more external connections, the contact areas of the semiconductor substrate being contacted with a respective external connection via at least one bonding wire and the semiconductor component being cast in a molding compound, is characterized in that at least one of the bonding wires is exposed on a surface of the molding compound and is dimensioned such that it melts at a predetermined current strength, the surface being such that the molten bonding wire flows off.
- the surface of the molding compound has a depression or a notch or a bead on one edge, in which at least one of the bonding wires is exposed.
- At least one of the bond wires preferably comprises a first and a second bond wire section, which are connected to one another via an intermediate island, the bond wire section, which is connected to the outer connection, being exposed.
- Wire cross section of the bond wires adapted to the desired fuse characteristic.
- the bonding wires are particularly advantageous as a fuse.
- the method according to the invention for producing a semiconductor component which comprises a semiconductor substrate with one or more contact areas and one or more external connections, the contact areas of the semiconductor substrate being contacted with a respective external connection via at least one bonding wire, with the steps: securing the semiconductor substrate to one Basic structure, contacting the contact areas of the semiconductor substrate with a respective external connection with at least one bonding wire and potting the semiconductor component with a molding compound in a pressing tool, so that the semiconductor substrate is hermetically sealed, is characterized in that the bonding wire is shaped in this way when the external connection is connected to the semiconductor substrate is that the bond wire protrudes beyond the surface of the semiconductor component and presses against the pressing tool during casting.
- La and lb shows the structure of an embodiment of the semiconductor device according to the invention in cross section or in plan view.
- FIG. 2 shows the structure of a further embodiment of the semiconductor component according to the invention in cross section.
- 3a and 3b show the structure of a further embodiment of the semiconductor component according to the invention in cross section or in plan view.
- 4a and 4b show the structure of a further embodiment of the semiconductor component according to the invention in cross section or in plan view.
- Fig. La shows a first embodiment of the semiconductor device according to the invention in cross section.
- the semiconductor component shown comprises a semiconductor substrate 1 which is attached directly to a leadframe 2 in an electrically conductive manner or via an insulator (not shown).
- a voltage is applied to the semiconductor substrate 1 via external connections 3, or a voltage is tapped from the semiconductor substrate 1 via the external connections 3.
- the external connections 3 are connected to contact areas (not shown) on the semiconductor substrate 1 via bond wires 11.
- the molding compound 4 is initially liquid and hardens after a given time, so that it maintains the shape then achieved.
- the shape of the molding compound 4 is determined by a pressing tool.
- the pressing tool specifies the surface 5 of the molding compound 4 at the end of the curing process.
- the bonding wire when the connection is made from the contact areas on the semiconductor substrate 1 to the external connections 3, the bonding wire is bent via at least one bonding wire 11 to form a bonding loop 6, which is pulled somewhat beyond the later surface 5 of the molding compound 4.
- the loop 6 is shown in dashed lines in FIG. 1 a, as it is formed by the pressing tool before pressing.
- the loop 6 springs against the pressing tool (not shown), so that the bonding wire 11 comes to rest securely on the molding compound surface 5 of the finished component.
- the bonding wire 11 remains in contact with the pressing tool and is thus safely exposed on the finished component 5 of the finished component. If the bonding wire 11 melts when the component is overloaded and fails, the metal can emerge from an opening 7 in the molding compound 4 and interrupt the electrical connection to the contact areas on the semiconductor substrate 1.
- the surface 5 of the semiconductor component is shown in plan view in FIG. 1b.
- the expansion of the semiconductor 1 in the molding compound 3 is shown in dashed lines.
- Pressing compound 3 is followed by lead frame 2, which acts as a and heat sink.
- the external connections 3 shown at the bottom in FIG. 1b end in the molding compound 4 “blindly” and are connected to contact areas on the semiconductor substrate 1 via bonding wires 11 in the sealing compound 4, shown partly in broken lines.
- the bond wires come in
- the surface 5 of the component is flat, and the loops 6 appear on the upper level in FIGS. 1 a and 1 b.
- the exit point 7 of the bonding wire 11 can also be placed in a depression 8 in the surface 5.
- Fig. 2 Such an embodiment is shown in Fig. 2.
- an ejector brand of the component can be used, which has the advantage that no additional manufacturing step is required.
- FIGS. 3a and 3b A further embodiment of the semiconductor component according to the invention is shown in FIGS. 3a and 3b. Since the components are installed in the predominant number of cases either in a horizontal or in a vertical position, it may be the case that the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts liquid metal does not drain, because the place where the bonding wire 11 melts
- Wire 11 melts at a lower position than the surroundings.
- the component is shown in a "horizontal” position in FIG. 3a; “vertical” means that the component is rotated by + or -90 ° about an axis perpendicular to the drawing plane in FIG. 3a.
- this case is avoided by a suitably shaped bead 9 in the molding compound 4.
- the bead 9 has essentially the shape of a quarter circle and is arranged on an edge of the molding compound 4. This ensures drainage of the liquid metal both in the case of horizontal and vertical installation of the component, because in both cases the opening 7 in the surface on which the bonding wire 11 emerges is in the middle of an inclined surface, so that liquid metal can flow freely from the bond wire 11.
- the bead 9 limited to part of the molding compound, d. H. the bead 9 does not have to extend over an entire edge. Even when the bead extends only over part of the edge of the molding compound, however, an interruption of the current path is ensured in almost any installation position.
- FIGS. 4a and 4b Another embodiment of the invention is shown in FIGS. 4a and 4b.
- a notch 10 is provided in the surface 5, which represents a semicircle in cross section.
- Other forms of cross S chnitts the notch 10 as that of a triangle are also possible.
- the notch 10 is shown arranged in a lower third of the housing or the molding compound 4. The ultimately selected position of the notch 10 depends on the precise specifications of the housing, ie on whether it is a housing of the type TO-220AB, TO-220AA, TO-220C, SOT-186 or the like.
- connection pin 3 is connected to a plurality of bonding wires 11 with contact areas on the semiconductor substrate 1.
- 3b and 4b therefore, a plurality of bonding wires 11 are shown, which are connected by an external connection 3 to a plurality of contact regions on the semiconductor.
- an intermediate step is provided in connecting the contact areas of the semiconductor to the external connections.
- the bond wire or wires 11 have a first bond wire section 13 and a second bond wire section 14.
- the first bond wire section 13 is drawn from the external connection 3
- the second bond wire section 14 is drawn from the chip 1 onto an intermediate island 12 in the lead frame 2.
- This intermediate island 12 can also be an unused connection pin 3. A penetration of moisture to the chip 1 is thus reliably avoided: the moisture could, if at all, only between the actual external connection 3 and the intermediate island 12, i. H. on the first bond wire
- the embodiment with the intermediate island 12 according to FIG. 5 enables a very flexible solution.
- the bond wires 14 are pulled from the chip 1 onto the intermediate island 12, from there then only one bond wire 13 - dimensioned according to the desired tripping characteristic - can be pulled from the intermediate island 12 to the external connection 3.
- the total cross-section of the bond wire or wires 11 reaches a cross-section which only allows melting at very high current strengths, it is also possible to achieve the fuse behavior according to the invention directly by deliberately weakening 15 the or the external connections 3 according to FIG. 6.
- the external connection 3 is reduced in cross section at a predetermined point to a predetermined extent as shown in FIG.
- the degree of reduction in the cross section of the external connection 3 at the weakening 15 depends on the maximum permissible current and the material used for the external connection 3.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Wire Bonding (AREA)
- Fuses (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59802989T DE59802989D1 (de) | 1997-11-25 | 1998-09-30 | Halbleiterbauelement mit definiertem verhalten bei einem ausfall und verfahren zur herstellung eines solchen |
EP98956803A EP1034555B1 (de) | 1997-11-25 | 1998-09-30 | Halbleiterbauelement mit definiertem verhalten bei einem ausfall und verfahren zur herstellung eines solchen |
JP2000522604A JP2001524735A (ja) | 1997-11-25 | 1998-09-30 | 故障の際に規定された特性を有している半導体構造エレメント及びこのような半導体構造エレメントを製作する方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE19752196A DE19752196C1 (de) | 1997-11-25 | 1997-11-25 | Halbleiterbauelement mit definiertem Verhalten bei einem Ausfall und Verfahren zur Herstellung eines solchen |
DE19752196.7 | 1997-11-25 |
Publications (1)
Publication Number | Publication Date |
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WO1999027554A1 true WO1999027554A1 (de) | 1999-06-03 |
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ID=7849764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/DE1998/002910 WO1999027554A1 (de) | 1997-11-25 | 1998-09-30 | Halbleiterbauelement mit definiertem verhalten bei einem ausfall und verfahren zur herstellung eines solchen |
Country Status (4)
Country | Link |
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EP (1) | EP1034555B1 (de) |
JP (1) | JP2001524735A (de) |
DE (2) | DE19752196C1 (de) |
WO (1) | WO1999027554A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008013031A1 (de) | 2008-03-07 | 2009-09-10 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement |
CN109979789A (zh) * | 2017-12-28 | 2019-07-05 | 株式会社万都 | 热熔断器的安装结构 |
CN112802825A (zh) * | 2019-11-13 | 2021-05-14 | 三菱电机株式会社 | 半导体装置 |
Families Citing this family (14)
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JP4565727B2 (ja) * | 2000-10-10 | 2010-10-20 | 三洋電機株式会社 | 半導体装置の製造方法 |
JP4565728B2 (ja) * | 2000-10-10 | 2010-10-20 | 三洋電機株式会社 | 中空気密パッケージ型の半導体装置 |
DE10324069B4 (de) * | 2003-05-27 | 2005-06-23 | Infineon Technologies Ag | Schaltungsanordnung und Verfahren zur leitenden Verbindung von Kontaktflecken bei Halbleiterchips |
DE10334433B4 (de) * | 2003-07-28 | 2009-10-22 | Infineon Technologies Ag | Vorrichtung zur Unterbrechung des Stromflusses zu einem oder von einem Halbleiterkörper eines Halbleiterbauelements |
DE102007051870A1 (de) * | 2007-10-30 | 2009-05-07 | Robert Bosch Gmbh | Modulgehäuse und Verfahren zur Herstellung eines Modulgehäuses |
DE102008040480A1 (de) * | 2008-07-16 | 2010-01-28 | Semikron Elektronik Gmbh & Co. Kg | Halbleitermodul |
EP2230689A1 (de) * | 2009-03-19 | 2010-09-22 | Siemens Aktiengesellschaft | Kurzschlusssicheres Halbleitermodul |
EP2420960A1 (de) * | 2010-08-17 | 2012-02-22 | Gemalto SA | Verfahren zur Herstellung einer elektronischen Vorrichtung, die ein nicht demontierbares Modul umfasst, und so erhaltene Vorrichtung |
DE102016221647A1 (de) * | 2016-10-11 | 2018-04-12 | Continental Teves Ag & Co. Ohg | Treiberschaltung für einen bürstenlosen Gleichstrommotor |
DE102020214966A1 (de) | 2020-11-27 | 2022-06-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kommutierzelle für einen Inverter |
FR3118392A1 (fr) * | 2020-12-22 | 2022-06-24 | Valeo Equipements Electriques Moteur | Procede de fabrication d’un module de puissance surmoule |
FR3118391A1 (fr) * | 2020-12-22 | 2022-06-24 | Valeo Equipements Electriques Moteur | Module de puissance avec surmoulage et systemes comprenant un tel module de puissance |
FR3118390A1 (fr) * | 2020-12-22 | 2022-06-24 | Valeo Equipements Electriques Moteur | Module de puissance avec surmoulage et systemes comprenant un tel module de puissance |
FR3131080A1 (fr) * | 2021-12-22 | 2023-06-23 | Valeo Equipements Electriques Moteur | Module de puissance avec surmoulage et systeme electrique comprenant un tel module de puissance |
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DE1440801A1 (de) * | 1962-11-30 | 1968-12-12 | Bernhard Beyschlag Appbau Dr | Elektrischer Schichtwiderstand |
US4169271A (en) * | 1977-01-27 | 1979-09-25 | Tokyo Shibaura Electric Co., Ltd. | Semiconductor device including a thermal fuse encapsulated in a droplet of silicone rubber |
EP0481493A2 (de) * | 1990-10-18 | 1992-04-22 | Sumitomo Electric Industries, Limited | Schmelzleiter |
EP0554195A1 (de) * | 1992-01-29 | 1993-08-04 | STMicroelectronics S.A. | Selbsttätig geschütztes Halbleiterschutzelement |
US5583740A (en) * | 1994-08-29 | 1996-12-10 | Rohm Co., Ltd. | Package type fused solid electrolytic capacitor |
US5663858A (en) * | 1994-10-01 | 1997-09-02 | Asea Brown Boveri Ag | Method for fault correction in a power converter circuit arrangement |
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JPH0627959Y2 (ja) * | 1988-10-20 | 1994-07-27 | ローム株式会社 | ダイオード |
JPH0547294A (ja) * | 1990-10-18 | 1993-02-26 | Sumitomo Electric Ind Ltd | ヒユーズ用導体 |
JPH05160265A (ja) * | 1991-04-26 | 1993-06-25 | American Teleph & Telegr Co <Att> | 可遮断性接続 |
JP3459291B2 (ja) * | 1993-09-21 | 2003-10-20 | ローム株式会社 | 半導体チップを備えた電子部品 |
-
1997
- 1997-11-25 DE DE19752196A patent/DE19752196C1/de not_active Expired - Fee Related
-
1998
- 1998-09-30 EP EP98956803A patent/EP1034555B1/de not_active Expired - Lifetime
- 1998-09-30 WO PCT/DE1998/002910 patent/WO1999027554A1/de active IP Right Grant
- 1998-09-30 JP JP2000522604A patent/JP2001524735A/ja active Pending
- 1998-09-30 DE DE59802989T patent/DE59802989D1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1440801A1 (de) * | 1962-11-30 | 1968-12-12 | Bernhard Beyschlag Appbau Dr | Elektrischer Schichtwiderstand |
US4169271A (en) * | 1977-01-27 | 1979-09-25 | Tokyo Shibaura Electric Co., Ltd. | Semiconductor device including a thermal fuse encapsulated in a droplet of silicone rubber |
EP0481493A2 (de) * | 1990-10-18 | 1992-04-22 | Sumitomo Electric Industries, Limited | Schmelzleiter |
EP0554195A1 (de) * | 1992-01-29 | 1993-08-04 | STMicroelectronics S.A. | Selbsttätig geschütztes Halbleiterschutzelement |
US5583740A (en) * | 1994-08-29 | 1996-12-10 | Rohm Co., Ltd. | Package type fused solid electrolytic capacitor |
US5663858A (en) * | 1994-10-01 | 1997-09-02 | Asea Brown Boveri Ag | Method for fault correction in a power converter circuit arrangement |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008013031A1 (de) | 2008-03-07 | 2009-09-10 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement |
US8653509B2 (en) | 2008-03-07 | 2014-02-18 | Osram Opto Semiconductors Gmbh | Optoelectronic component |
DE102008013031B4 (de) | 2008-03-07 | 2019-07-25 | Osram Oled Gmbh | Optoelektronisches Bauelement |
CN109979789A (zh) * | 2017-12-28 | 2019-07-05 | 株式会社万都 | 热熔断器的安装结构 |
CN109979789B (zh) * | 2017-12-28 | 2022-08-05 | 株式会社万都 | 热熔断器的安装结构 |
CN112802825A (zh) * | 2019-11-13 | 2021-05-14 | 三菱电机株式会社 | 半导体装置 |
Also Published As
Publication number | Publication date |
---|---|
DE19752196C1 (de) | 1999-02-11 |
EP1034555A1 (de) | 2000-09-13 |
EP1034555B1 (de) | 2002-01-30 |
JP2001524735A (ja) | 2001-12-04 |
DE59802989D1 (de) | 2002-03-14 |
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