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Patent US4672415A successfully refreshed from Google Patents.
US4672415A
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Power thyristor on a substrate
Assignee: BBC Brown Boveri AG Germany
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Filing: 1984-08-31
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Granted: 1987-06-09
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Expires: 2004-08-31
Abstract
Abstract A power thyristor assembly, includes an insulating and metallized substrate, and a power thyristor having a cathode and gate side facing toward and soldered to the substrate, and an anode side facing away from the substrate, the anode side having an anode and a passivation ditch surrounding the anode, the anode side including a reverse junction, the cathode and gate side including a blocking pn-junction, and the passivation ditch being common to the anode side reverse junction and to the cathode and gate side blocking pn-junction.
Inventors
- 👤 Gunter Berndes
- 👤 Arno Neidig
- 👤 Eckhard Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:39
CPC Classifications
H; H10; H10D; H10D18/00; H10D62/00; H10D62/10; H10D62/102; H10D62/103; H10D62/104; H10W; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
Power thyristor assembly, comprising an insulating substrate, a metallization disposed on said substrate, and a power thyristor having p layers, n layers, a cathode and gate side facing toward and soldered to said substrate, and an anode facing away from said substrate, said anode side having an anode and a passivation ditch surrounding said anode, said anode side including a reverse pn-junction, said cathode and gate side including a blockage pn-junction, and said passivation ditch being common to said anode side reverse pn-junction and to said cathode and gate side blocking pn-junction.
Claim 2
Dependent Claim
92 words
Power thyristor assembly, comprising an insulating substrate, a metallization disposed on said substrate, and a power thyristor having p layers, n layers, a cathode and gate side facing toward and soldered to said substrate, and an anode facing away from said substrate, said anode side having an anode and a passivation ditch surrounding said anode, said anode side including a reverse pn-junction, said cathode and gate side including a blockage pn-junction, and said passivation ditch being common to said anode side reverse pn-junction and to said cathode and gate side blocking pn-junction.
Claim 3
Dependent Claim
28 words
Power thyristor assembly according to claim 1, wherein said cathode and gate side is the lower side and said anode side is the upper side of said thyristor.
Claim 4
Dependent Claim
23 words
Power thyristor assembly according to claim 1, including a gate disposed at a part of the edge of said cathode and gate side.
References Cited (Backward Citations)
US4156250A
Cited
US4388633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |