US5554823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging device and its manufacturing method
Assignee: Rohm Co Ltd
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Filing: 1992-12-23
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Granted: 1996-09-10
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Expires: 2012-12-23
Abstract
Abstract A tantalum capacitor chip and lead terminals respectively connected to two electrodes of the chip are molded in resin. A portion of the lead terminal, not molded in the resin is bent at a tip side and at a base side. The resin is provided with a structure in which its upper half is longer than its lower half at both sides. The base side portion of the portion not molded in the resin, of each of the lead terminals is curved downward with a predetermined radius of curvature, and an inwardly bent portion is formed on the tip side of the base side curved portion of the protruding portion.
Inventors
- 👤 Miki Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:17
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/008; H01G9/012; H10; H10W; H10W70/00; H10W70/01; H10W70/04; H10W70/048; H10W74/00; H10W74/10; H10W74/111
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
191 words
A packaging device comprising: an electric circuit device; a plurality of lead terminals, each of said lead terminals having two ends with a first of said two ends of each of said lead terminals being connected to the electric circuit device; and a resin for encapsulating the electric circuit device and said one of said ends of each of the plurality of lead terminals, wherein a remainder of each of said leads not encapsulated in the resin protrudes out of an end surface of the resin and is curved downward, each of said leads curving downward from a lower side of an upper half of the resin in an arcuate manner with a predetermined radius of curvature, wherein the predetermined radius of curvature of each lead terminal is 0.06 mm to 1.0 mm, and an inwardly bent portion is formed on a second end of each of said plurality of lead terminals, said inwardly bent portions having a smaller radius of curvature than said predetermined radius of curvature, and wherein an outermost end of the inwardly bent portion is located inward from an outermost point of the predetermined radius of curvature.
Claim 2
Dependent Claim
191 words
A packaging device comprising: an electric circuit device; a plurality of lead terminals, each of said lead terminals having two ends with a first of said two ends of each of said lead terminals being connected to the electric circuit device; and a resin for encapsulating the electric circuit device and said one of said ends of each of the plurality of lead terminals, wherein a remainder of each of said leads not encapsulated in the resin protrudes out of an end surface of the resin and is curved downward, each of said leads curving downward from a lower side of an upper half of the resin in an arcuate manner with a predetermined radius of curvature, wherein the predetermined radius of curvature of each lead terminal is 0.06 mm to 1.0 mm, and an inwardly bent portion is formed on a second end of each of said plurality of lead terminals, said inwardly bent portions having a smaller radius of curvature than said predetermined radius of curvature, and wherein an outermost end of the inwardly bent portion is located inward from an outermost point of the predetermined radius of curvature.
Claim 3
Dependent Claim
60 words
A packaging device according to claim 1, wherein the resin is formed into a structure in which a lower side of the upper half is longer than an upper side of a lower half-at both sides and the lead terminals protrude out of a lower half side of a connection portion between the upper and lower halves of the resin.
Claim 4
Dependent Claim
17 words
A packaging device according to claim 1, wherein the electric circuit device is a tantalum capacitor chip.
References Cited (Backward Citations)
JPS6027150A
Cited
US4703393A
Cited
US4794446A
Cited
US4660127A
Cited
JPS63199447A
Cited
JPH01206652A
Cited
US4890154A
Cited
JPH01230218A
Cited
US5107324A
Cited
JPH03116767A
Cited
US5177674A
Cited
US5475259A
Cited
US5281852A
Cited
US5410445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-10 | 2000-03-11 | 2000-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-10 | 2004-03-11 | 2004-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-10 | 2008-03-11 | 2008-09-10 | $7700.00 | Window Closed / Lapsed |