US4404582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting arrangement for disc mounted semiconductor devices
Assignee: Sundstrand Corp
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Filing: 1980-11-28
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Granted: 1983-09-13
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Expires: 2000-11-28
Abstract
Abstract An assembly of disc mounted, compression bonded-encapsulated, semiconductor devices is provided with positioning elements from the sheet metal serving as a heat sink and electrical bus adjacent the device contact face. A plurality of holding fingers stamped from the sheet metal grip the device side surface and permit placing the device in position accurately so the clamping elements apply proper force along the device axis.
Inventors
- 👤 David D. Pollard
- 👤 Gary E. Krajci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:43
CPC Classifications
H; H10; H10W; H10W90/00; H10W40/00; H10W40/60; H10W40/641
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
127 words
A semiconductor device assembly comprising: a stack including a plurality of disc type semiconductor devices in axial alignment and a plurality of metal sheets, serving as both heat sinks and electrical conductors, of which one is located at each major face of each of said devices including at least one metal sheet that is directly between two of said devices; each of said metal sheets having a plurality of holding fingers stamped from the material thereof and deformed to grip the edge of the adjacent device, with said at least one metal sheet that is directly between two devices having holding fingers stamped and deformed away from both of the surfaces of said sheet; and, means for applying a predetermined pressure along the axis of said devices.
Claim 2
Dependent Claim
127 words
A semiconductor device assembly comprising: a stack including a plurality of disc type semiconductor devices in axial alignment and a plurality of metal sheets, serving as both heat sinks and electrical conductors, of which one is located at each major face of each of said devices including at least one metal sheet that is directly between two of said devices; each of said metal sheets having a plurality of holding fingers stamped from the material thereof and deformed to grip the edge of the adjacent device, with said at least one metal sheet that is directly between two devices having holding fingers stamped and deformed away from both of the surfaces of said sheet; and, means for applying a predetermined pressure along the axis of said devices.
Claim 3
Dependent Claim
52 words
A semiconductor device assembly in accordance with claim 1 wherein: each of said plurality of disc type semiconductor devices has circular opposing major faces and each of said major faces of each of said devices is entirely in pressure contact with a continuous and planar surface of one of said metal sheets.
References Cited (Backward Citations)
US4247864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |