US3821614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi conductor unit with flow deposited solder
Assignee: Robert Bosch GmbH
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Filing: 1973-04-04
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Granted: 1974-06-28
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Expires: 1993-04-04
Abstract
Abstract A semi-conductor element is to be connected with one or more conductor members by soft-soldering. The conductor member is provided with a nose-like projection having circumferential surface portions and a free end face which is planar and with which the circumferential surface portions define acute angles. Liquid solder is flow-deposited on the surface portions and on the end face, forming a solder-coating on them, particularly on the surface portions, and the coated endface is in abutment with the semi-conductor element and soldered thereto.
Inventors
- 👤 G Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:00
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; B; B23; B23K; B23K1/00; B23K1/08; B23K1/085; H10W74/00; H10W74/10; H10W74/111; H10W74/114; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T29/49171; Y10T29/49172
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A semi-conductor unit, comprising a semi-conductor element; at least one conductor member having a nose-like projection formed with a transverse end face facing said semi-conductor element, and with a circumferential surface having a circumferential surface portion rearwardly adjacent said transverse end face and being inwardly arcuate so as to form an annular groove of arcuate cross-section rearwardly adjacent said transverse end face; and a quantity of solder connecting said projection of said conductor member with said semi-conductor element and including a smaller portion interposed between and bonding together said transverse end face and said semi-conductor element, and a larger portion received in said annular groove rearwardly adjacent said transverse end face.
Claim 2
Dependent Claim
111 words
A semi-conductor unit, comprising a semi-conductor element; at least one conductor member having a nose-like projection formed with a transverse end face facing said semi-conductor element, and with a circumferential surface having a circumferential surface portion rearwardly adjacent said transverse end face and being inwardly arcuate so as to form an annular groove of arcuate cross-section rearwardly adjacent said transverse end face; and a quantity of solder connecting said projection of said conductor member with said semi-conductor element and including a smaller portion interposed between and bonding together said transverse end face and said semi-conductor element, and a larger portion received in said annular groove rearwardly adjacent said transverse end face.
Claim 3
Dependent Claim
20 words
A semi-conductor unit as defined in claim 1, wherein said solder is flow-deposited on said endface and in said groove.
Claim 4
Dependent Claim
16 words
A semi-conductor unit as defined in claim 1, wherein said endface is a planar contact face.
Claim 5
Dependent Claim
22 words
A semi-conductor unit as defined in claim 3, said surface portion of said groove including obtuse angles with said planar contact face.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |