Patent US4007076A successfully refreshed from Google Patents.
Patent US3700969A successfully refreshed from Google Patents.
US3700969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repairable semiconductor assembly
Assignee: Motors Liquidation Co
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Filing: 1972-02-14
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Granted: 1972-10-24
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Expires: 1992-02-14
Abstract
Abstract A transient suppressor for an electronic circuit includes a hermetically sealed housing for a Zener diode having a thin thermally conductive cover in thermal engagement with the Zener diode near the junction thereof and a heat dissipating member extending from the diode through the bottom of the package. A thermal circuit breaker seated in the depressed portion of the dish-shaped cover has a temperature responsive element normally in intimate engagement with the cover to sense the diode junction temperature. A base member supporting the diode housing and the circuit breaker carries a leaf spring for biasing the circuit breaker against the diode housing. The spring is removable to allow easy replacement of the diode or the circuit breaker when defective. External circuit connections which may include a fuse, places the circuit breaker in series with the Zener diode to prevent current flow through the diode when the junction temperature reaches a critical point.
Inventors
- 👤 Thomas J Furnival
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:10
CPC Classifications
H; H10; H10W; H10W42/00; H10W42/80; H10W40/00; H10W72/00; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/52; H01H37/54; H01H37/5427; H01H37/5436; H02; H02H; H02H9/00; H02H9/04; H02H9/042
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
A self-protective semiconductor assembly comprising a hermetically sealed semiconductor device including a housing having a thin thermally conductive member and an opposing heat sink member, and a semiconductor cell between the members in intimate thermal contact therewith, the semiconductor junction being near the thin member, a thermally responsive circuit breaker mounted externally of the housing and including a temperature responsive element normally in intimate thermally conductive engagement with the thin member so that the element is responsive to the semiconductor junction temperature for opening the circuit breaker when the junction temperature reaches a critical value, means for electrically connecting the circuit breaker in series with the semiconductor for preventing current flow through the semiconductor when the junction temperature is at the critical level, and removable spring means for biasing the circuit breaker against the semiconductor device for maintaining the integrity of the assembly.
Claim 2
Dependent Claim
143 words
A self-protective semiconductor assembly comprising a hermetically sealed semiconductor device including a housing having a thin thermally conductive member and an opposing heat sink member, and a semiconductor cell between the members in intimate thermal contact therewith, the semiconductor junction being near the thin member, a thermally responsive circuit breaker mounted externally of the housing and including a temperature responsive element normally in intimate thermally conductive engagement with the thin member so that the element is responsive to the semiconductor junction temperature for opening the circuit breaker when the junction temperature reaches a critical value, means for electrically connecting the circuit breaker in series with the semiconductor for preventing current flow through the semiconductor when the junction temperature is at the critical level, and removable spring means for biasing the circuit breaker against the semiconductor device for maintaining the integrity of the assembly.
Claim 3
Dependent Claim
169 words
A self-protective semiconductor assembly comprising a hermetically sealed semiconductor device including a housing having a thin thermally conductive member and an opposing heat sink member, and a semiconductor cell between the members in intimate thermal contact therewith, the semiconductor junction being near the thin member, a thermally responsive circuit breaker mounted externally of the housing and including a temperature responsive element normally in intimate thermally conductive engagement with the thin member so that the element is responsive to the semiconductor junction temperature for opening the circuit breaker when the junction temperature reaches a critical value, means for electrically connecting the circuit breaker in series with the semiconductor for preventing current flow through the semiconductor when the junction temperature is at the critical level, and a base member supporting the semiconductor device, spring support means secured to the base and a leaf spring removably attached to the support means and bearing on the circuit breaker to apply a force through the circuit breaker and the semiconductor device to the base.
Claim 4
Dependent Claim
169 words
A self-protective semiconductor assembly comprising a hermetically sealed semiconductor device including a housing having a thin thermally conductive member and an opposing heat sink member, and a semiconductor cell between the members in intimate thermal contact therewith, the semiconductor junction being near the thin member, a thermally responsive circuit breaker mounted externally of the housing and including a temperature responsive element normally in intimate thermally conductive engagement with the thin member so that the element is responsive to the semiconductor junction temperature for opening the circuit breaker when the junction temperature reaches a critical value, means for electrically connecting the circuit breaker in series with the semiconductor for preventing current flow through the semiconductor when the junction temperature is at the critical level, and a base member supporting the semiconductor device, spring support means secured to the base and a leaf spring removably attached to the support means and bearing on the circuit breaker to apply a force through the circuit breaker and the semiconductor device to the base.
Claim 5
Dependent Claim
164 words
A self-protective Zener diode assembly comprising a hermetically sealed diode device including a housing having a thin thermally conductive dish-shapEd member having a central depressed portion and an opposing heat sink member, and a Zener diode between the members in intimate thermal contact therewith, the Zener diode junction being near the depressed portion of the thin member, a thermally responsive circuit breaker mounted externally of the housing and seated within the depressed portion and including a temperature responsive element normally in intimate thermally conductive engagement with the thin member so that the element is responsive to the Zener diode junction temperature for opening the circuit breaker when the junction temperature reaches a critical value, means for electrically connecting the circuit breaker in series with the Zener diode for preventing current flow through the Zener diode when the junction temperature is at the critical level, a removable spring means for biasing the circuit breaker against the diode device for maintaining the integrity of the assembly.
Claim 6
Dependent Claim
164 words
A self-protective Zener diode assembly comprising a hermetically sealed diode device including a housing having a thin thermally conductive dish-shapEd member having a central depressed portion and an opposing heat sink member, and a Zener diode between the members in intimate thermal contact therewith, the Zener diode junction being near the depressed portion of the thin member, a thermally responsive circuit breaker mounted externally of the housing and seated within the depressed portion and including a temperature responsive element normally in intimate thermally conductive engagement with the thin member so that the element is responsive to the Zener diode junction temperature for opening the circuit breaker when the junction temperature reaches a critical value, means for electrically connecting the circuit breaker in series with the Zener diode for preventing current flow through the Zener diode when the junction temperature is at the critical level, a removable spring means for biasing the circuit breaker against the diode device for maintaining the integrity of the assembly.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |